[{"data":1,"prerenderedAt":1009},["ShallowReactive",2],{"catalog":3,"page:\u002Fpets\u002Fpuppy-weight-calculator":294},[4,55,76,108,129,165,197,247,280],{"path":5,"stem":6,"title":7,"short":8,"icon":9,"order":10,"calculators":11},"\u002Fwoodworking","woodworking\u002Findex","Woodworking Calculators","Board feet, stairs, deck boards, tape measure fractions and decimals.","i-lucide-hammer",1,[12,19,25,31,37,43,49],{"path":13,"stem":14,"title":15,"short":16,"icon":17,"hub":18},"\u002Fwoodworking\u002Fboard-foot-calculator","woodworking\u002Fboard-foot-calculator","Board Foot Calculator","Board feet, cost and waste for a list of boards, hardwood or softwood.","i-lucide-ruler-dimension-line","woodworking",{"path":20,"stem":21,"title":22,"short":23,"icon":24,"hub":18},"\u002Fwoodworking\u002Fdeck-board-calculator","woodworking\u002Fdeck-board-calculator","Deck Board Calculator","Deck boards, linear feet, joists and screws for any deck size.","i-lucide-rows-3",{"path":26,"stem":27,"title":28,"short":29,"icon":30,"hub":18},"\u002Fwoodworking\u002Ffraction-to-decimal-chart","woodworking\u002Ffraction-to-decimal-chart","Fraction to Decimal Chart (Inches)","Every 64th of an inch as a decimal and in mm, with a two-way converter.","i-lucide-decimals-arrow-right",{"path":32,"stem":33,"title":34,"short":35,"icon":36,"hub":18},"\u002Fwoodworking\u002Fhow-to-read-a-tape-measure","woodworking\u002Fhow-to-read-a-tape-measure","How to Read a Tape Measure","Tap any mark on an interactive tape to see its fraction, decimal and mm.","i-lucide-pencil-ruler",{"path":38,"stem":39,"title":40,"short":41,"icon":42,"hub":18},"\u002Fwoodworking\u002Fplywood-calculator","woodworking\u002Fplywood-calculator","Plywood Calculator","Plywood and OSB sheets for subfloors, walls and roofs, with cost.","i-lucide-layers",{"path":44,"stem":45,"title":46,"short":47,"icon":48,"hub":18},"\u002Fwoodworking\u002Frafter-calculator","woodworking\u002Frafter-calculator","Rafter Calculator","Common rafter length, angle and ridge height for any span and pitch.","i-lucide-house",{"path":50,"stem":51,"title":52,"short":53,"icon":54,"hub":18},"\u002Fwoodworking\u002Fstair-calculator","woodworking\u002Fstair-calculator","Stair Calculator","Risers, treads, total run and stringer length from the total rise.","i-lucide-chart-no-axes-column-increasing",{"path":56,"stem":57,"title":58,"short":59,"icon":60,"order":61,"calculators":62},"\u002Fresin-and-candles","resin-and-candles\u002Findex","Resin & Candle Making Calculators","Epoxy volumes and mix ratios, candle wax and fragrance oil.","i-lucide-flask-conical",2,[63,70],{"path":64,"stem":65,"title":66,"short":67,"icon":68,"hub":69},"\u002Fresin-and-candles\u002Fcandle-wax-calculator","resin-and-candles\u002Fcandle-wax-calculator","Candle Wax Calculator","Wax and fragrance oil by weight for any jar size and batch.","i-lucide-flame","resin-and-candles",{"path":71,"stem":72,"title":73,"short":74,"icon":75,"hub":69},"\u002Fresin-and-candles\u002Fepoxy-resin-calculator","resin-and-candles\u002Fepoxy-resin-calculator","Epoxy Resin Calculator","Resin for molds, river tables and tabletop coats, split into A and B.","i-lucide-droplets",{"path":77,"stem":78,"title":79,"short":80,"icon":81,"order":82,"calculators":83},"\u002Fquilting","quilting\u002Findex","Quilting Calculators","Backing, binding, half-square triangles and quilt sizes.","i-lucide-grid-3x3",3,[84,91,96,102],{"path":85,"stem":86,"title":87,"short":88,"icon":89,"hub":90},"\u002Fquilting\u002Fhalf-square-triangle-calculator","quilting\u002Fhalf-square-triangle-calculator","Half Square Triangle Calculator","Cutting sizes and square counts for 2-, 4- and 8-at-a-time HSTs.","i-lucide-triangle-right","quilting",{"path":92,"stem":93,"title":94,"short":95,"icon":42,"hub":90},"\u002Fquilting\u002Fquilt-backing-calculator","quilting\u002Fquilt-backing-calculator","Quilt Backing Calculator","Yardage, panels and seam direction for any quilt back.",{"path":97,"stem":98,"title":99,"short":100,"icon":101,"hub":90},"\u002Fquilting\u002Fquilt-binding-calculator","quilting\u002Fquilt-binding-calculator","Quilt Binding Calculator","Strips to cut and fabric to buy for double-fold binding.","i-lucide-frame",{"path":103,"stem":104,"title":105,"short":106,"icon":107,"hub":90},"\u002Fquilting\u002Fquilt-size-calculator","quilting\u002Fquilt-size-calculator","Quilt Size Calculator","Finished size from blocks and borders, or the right size for your bed.","i-lucide-bed-double",{"path":109,"stem":110,"title":111,"short":112,"icon":113,"order":114,"calculators":115},"\u002Fsewing-and-needlework","sewing-and-needlework\u002Findex","Sewing & Needlework Calculators","Fabric yardage, cutting plans and cross stitch fabric sizes.","i-lucide-scissors",4,[116,123],{"path":117,"stem":118,"title":119,"short":120,"icon":121,"hub":122},"\u002Fsewing-and-needlework\u002Fcross-stitch-fabric-calculator","sewing-and-needlework\u002Fcross-stitch-fabric-calculator","Cross Stitch Fabric Calculator","Finished design size and fabric to cut for any Aida or linen count.","i-lucide-grid-2x2-x","sewing-and-needlework",{"path":124,"stem":125,"title":126,"short":127,"icon":128,"hub":122},"\u002Fsewing-and-needlework\u002Ffabric-yardage-calculator","sewing-and-needlework\u002Ffabric-yardage-calculator","Fabric Yardage Calculator","Yards and meters to buy for any set of pieces, with a cutting plan.","i-lucide-ruler",{"path":130,"stem":131,"title":132,"short":133,"icon":134,"order":135,"calculators":136},"\u002Fknitting-and-crochet","knitting-and-crochet\u002Findex","Knitting & Crochet Calculators","Yarn yardage, gauge, blanket sizes, and needle and hook sizes.","i-lucide-spool",5,[137,143,149,154,159],{"path":138,"stem":139,"title":140,"short":141,"icon":107,"hub":142},"\u002Fknitting-and-crochet\u002Fcrochet-blanket-size-calculator","knitting-and-crochet\u002Fcrochet-blanket-size-calculator","Crochet Blanket Size Calculator","Blanket size chart plus the starting chain and rows at your gauge.","knitting-and-crochet",{"path":144,"stem":145,"title":146,"short":147,"icon":148,"hub":142},"\u002Fknitting-and-crochet\u002Fcrochet-hook-size-chart","knitting-and-crochet\u002Fcrochet-hook-size-chart","Crochet Hook Size Chart","US letters, millimeters and UK sizes for every hook, plus the yarn each suits.","i-lucide-fishing-hook",{"path":150,"stem":151,"title":152,"short":153,"icon":128,"hub":142},"\u002Fknitting-and-crochet\u002Fknitting-gauge-calculator","knitting-and-crochet\u002Fknitting-gauge-calculator","Knitting Gauge Calculator","Cast-on stitches and rows from your gauge, or rescale a pattern.",{"path":155,"stem":156,"title":157,"short":158,"icon":36,"hub":142},"\u002Fknitting-and-crochet\u002Fknitting-needle-size-chart","knitting-and-crochet\u002Fknitting-needle-size-chart","Knitting Needle Size Chart","US, metric and UK sizes for every knitting needle, plus the yarn each suits.",{"path":160,"stem":161,"title":162,"short":163,"icon":164,"hub":142},"\u002Fknitting-and-crochet\u002Fyarn-calculator","knitting-and-crochet\u002Fyarn-calculator","Yarn Calculator","Yards, meters and skeins for any project, worked out from your swatch.","i-lucide-scale",{"path":166,"stem":167,"title":168,"short":169,"icon":170,"order":171,"calculators":172},"\u002Fpool-and-aquarium","pool-and-aquarium\u002Findex","Pool, Pond & Aquarium Calculators","Pool and pond gallons, aquarium volume and fish stocking.","i-lucide-waves",6,[173,180,186,191],{"path":174,"stem":175,"title":176,"short":177,"icon":178,"hub":179},"\u002Fpool-and-aquarium\u002Faquarium-volume-calculator","pool-and-aquarium\u002Faquarium-volume-calculator","Aquarium Volume Calculator","Gallons, liters and weight for rectangle, bow front, cylinder and hex tanks.","i-lucide-container","pool-and-aquarium",{"path":181,"stem":182,"title":183,"short":184,"icon":185,"hub":179},"\u002Fpool-and-aquarium\u002Ffish-tank-stocking-calculator","pool-and-aquarium\u002Ffish-tank-stocking-calculator","Fish Tank Stocking Calculator","Check your fish list against the inch-per-gallon and surface-area rules.","i-lucide-fish",{"path":187,"stem":188,"title":189,"short":190,"icon":75,"hub":179},"\u002Fpool-and-aquarium\u002Fpond-volume-calculator","pool-and-aquarium\u002Fpond-volume-calculator","Pond Volume Calculator","Pond gallons, liner size and pump flow for any garden pond.",{"path":192,"stem":193,"title":194,"short":195,"icon":196,"hub":179},"\u002Fpool-and-aquarium\u002Fpool-volume-calculator","pool-and-aquarium\u002Fpool-volume-calculator","Pool Volume Calculator","Gallons and liters for round, oval, rectangle and kidney pools.","i-lucide-waves-ladder",{"path":198,"stem":199,"title":200,"short":201,"icon":202,"order":203,"calculators":204},"\u002Fgarden","garden\u002Findex","Garden & Landscape Calculators","Mulch, gravel, soil and sand, companion plants and garden plans.","i-lucide-leaf",7,[205,212,218,224,230,236,242],{"path":206,"stem":207,"title":208,"short":209,"icon":210,"hub":211},"\u002Fgarden\u002Fcompanion-planting-chart","garden\u002Fcompanion-planting-chart","Companion Planting Chart","Good and bad neighbors for 30 vegetables, herbs and flowers.","i-lucide-sprout","garden",{"path":213,"stem":214,"title":215,"short":216,"icon":217,"hub":211},"\u002Fgarden\u002Fgravel-calculator","garden\u002Fgravel-calculator","Gravel Calculator","Gravel for driveways, paths and patios in cubic yards, tons and bags.","i-lucide-mountain",{"path":219,"stem":220,"title":221,"short":222,"icon":223,"hub":211},"\u002Fgarden\u002Fmulch-calculator","garden\u002Fmulch-calculator","Mulch Calculator","Mulch for garden beds in cubic yards and 1.5, 2 or 3 cu ft bags.","i-lucide-trees",{"path":225,"stem":226,"title":227,"short":228,"icon":229,"hub":211},"\u002Fgarden\u002Fraised-bed-soil-calculator","garden\u002Fraised-bed-soil-calculator","Raised Bed Soil Calculator","Soil for any raised bed in cubic feet, cubic yards and bags.","i-lucide-shovel",{"path":231,"stem":232,"title":233,"short":234,"icon":235,"hub":211},"\u002Fgarden\u002Fsand-calculator","garden\u002Fsand-calculator","Sand Calculator","Sand for sandboxes, paver bases and leveling in tons and bags.","i-lucide-hourglass",{"path":237,"stem":238,"title":239,"short":240,"icon":241,"hub":211},"\u002Fgarden\u002Fsquare-foot-garden-planner","garden\u002Fsquare-foot-garden-planner","Square Foot Garden Planner","Plan a square foot garden square by square and count the plants.","i-lucide-layout-grid",{"path":243,"stem":244,"title":245,"short":246,"icon":210,"hub":211},"\u002Fgarden\u002Ftopsoil-calculator","garden\u002Ftopsoil-calculator","Topsoil Calculator","Topsoil for lawns, beds and leveling in cubic yards, tons and bags.",{"path":248,"stem":249,"title":250,"short":251,"icon":252,"order":253,"calculators":254},"\u002Fpets","pets\u002Findex","Pet & Backyard Animal Calculators","Cat and dog ages, puppy adult weight, and chicken coop space.","i-lucide-paw-print",8,[255,262,268,274],{"path":256,"stem":257,"title":258,"short":259,"icon":260,"hub":261},"\u002Fpets\u002Fcat-age-calculator","pets\u002Fcat-age-calculator","Cat Age Calculator","Cat years to human years, plus your cat's life stage.","i-lucide-cat","pets",{"path":263,"stem":264,"title":265,"short":266,"icon":267,"hub":261},"\u002Fpets\u002Fchicken-coop-size-calculator","pets\u002Fchicken-coop-size-calculator","Chicken Coop Size Calculator","Coop floor, run, roosts, nest boxes and vents for your flock.","i-lucide-egg",{"path":269,"stem":270,"title":271,"short":272,"icon":273,"hub":261},"\u002Fpets\u002Fdog-age-calculator","pets\u002Fdog-age-calculator","Dog Age Calculator","Dog years to human years by size, plus the epigenetic formula.","i-lucide-dog",{"path":275,"stem":276,"title":277,"short":278,"icon":279,"hub":261},"\u002Fpets\u002Fpuppy-weight-calculator","pets\u002Fpuppy-weight-calculator","Puppy Weight Calculator","Your puppy's likely adult weight, from its weight and age in weeks.","i-lucide-bone",{"path":281,"stem":282,"title":283,"short":284,"icon":285,"order":286,"calculators":287},"\u002Fhome-improvement","home-improvement\u002Findex","Home Improvement Calculators","Tile, boxes and grout for floors, walls and backsplashes.","i-lucide-paint-roller",9,[288],{"path":289,"stem":290,"title":291,"short":292,"icon":81,"hub":293},"\u002Fhome-improvement\u002Ftile-calculator","home-improvement\u002Ftile-calculator","Tile Calculator","Tiles, boxes and grout for floors, walls and backsplashes.","home-improvement",{"kind":295,"calculator":296},"calculator",{"id":297,"title":277,"body":298,"calculator":976,"description":977,"extension":978,"faq":979,"hub":261,"icon":279,"keyword":998,"meta":999,"navigation":1000,"path":275,"related":1001,"seo":1005,"seoTitle":1006,"short":278,"stem":276,"updated":1007,"__hash__":1008},"calculators\u002Fpets\u002Fpuppy-weight-calculator.md",{"type":299,"value":300,"toc":967},"minimark",[301,306,315,323,329,337,404,407,411,414,790,793,797,800,832,839,843,846,904,907,911,937,941],[302,303,305],"h2",{"id":304},"how-the-calculator-works","How the calculator works",[307,308,309,310,314],"p",{},"Puppies don't grow in a straight line. They put on weight fastest in the first few months, then slow down as they near adult size, and bigger breeds keep growing for longer. So the useful question is: ",[311,312,313],"strong",{},"what share of its adult weight has a puppy of this size reached at this age?"," Divide today's weight by that share and you have an estimate of the adult weight.",[307,316,317,318,322],{},"The shares come from a peer-reviewed study: Hawthorne, Booles, Nugent, Wilkinson and Gettinby, \"Body-weight changes during growth in puppies of different breeds\", ",[319,320,321],"em",{},"Journal of Nutrition"," 134 (2004), 2027S–2030S. Researchers at the WALTHAM Centre for Pet Nutrition weighed 173 puppies of 12 breeds every week, from toy to giant, until about 12 months old (18 months for large and giant breeds). For each breed they fitted an S-shaped growth curve,",[307,324,325,328],{},[311,326,327],{},"weight = adult weight ÷ (1 + e^(−(age − x0) ÷ b))",",",[307,330,331,332,336],{},"where x0 is the age in weeks at which the breed reached half its adult weight and 1\u002Fb its early growth rate. The calculator uses the published x0 and growth rate for each breed, sorts the breeds into the same size bands as the ",[333,334,335],"a",{"href":269},"dog age calculator"," by their adult weight, and shows the range across the breeds in the size you choose:",[338,339,340,356],"table",{},[341,342,343],"thead",{},[344,345,346,350,353],"tr",{},[347,348,349],"th",{},"Size",[347,351,352],{},"Adult weight",[347,354,355],{},"Breeds in the study",[357,358,359,371,382,393],"tbody",{},[344,360,361,365,368],{},[362,363,364],"td",{},"Small",[362,366,367],{},"20 lb or less (up to 9 kg)",[362,369,370],{},"Papillon, Cairn Terrier, Miniature Schnauzer",[344,372,373,376,379],{},[362,374,375],{},"Medium",[362,377,378],{},"21–50 lb (10–23 kg)",[362,380,381],{},"Cocker Spaniel, English Springer Spaniel, Beagle",[344,383,384,387,390],{},[362,385,386],{},"Large",[362,388,389],{},"51–90 lb (23–41 kg)",[362,391,392],{},"Labrador Retriever",[344,394,395,398,401],{},[362,396,397],{},"Giant",[362,399,400],{},"over 90 lb (over 41 kg)",[362,402,403],{},"Newfoundland, Great Dane, Irish Wolfhound, St. Bernard, English Mastiff",[307,405,406],{},"The study followed only one large breed, so a large puppy gets a single Labrador-based estimate rather than a range. The calculator works from 8 weeks, the age from which the study weighed every breed, to 78 weeks.",[302,408,410],{"id":409},"puppy-growth-chart","Puppy growth chart",[307,412,413],{},"Share of adult weight reached at each age, from each breed's fitted curve in the study. Adult weights are the study's fitted values, rounded. The last column is the age at which the breed reached 99% of its adult weight.",[338,415,416,448],{},[341,417,418],{},[344,419,420,423,425,427,430,433,436,439,442,445],{},[347,421,422],{},"Breed",[347,424,349],{},[347,426,352],{},[347,428,429],{},"8 weeks",[347,431,432],{},"12 weeks",[347,434,435],{},"16 weeks",[347,437,438],{},"20 weeks",[347,440,441],{},"26 weeks",[347,443,444],{},"36 weeks",[347,446,447],{},"99% grown",[357,449,450,481,510,540,571,599,627,654,682,709,734,761],{},[344,451,452,455,457,460,463,466,469,472,475,478],{},[362,453,454],{},"Papillon",[362,456,364],{},[362,458,459],{},"5 lb (2.2 kg)",[362,461,462],{},"39%",[362,464,465],{},"53%",[362,467,468],{},"68%",[362,470,471],{},"79%",[362,473,474],{},"90%",[362,476,477],{},"98%",[362,479,480],{},"10 months",[344,482,483,486,488,491,494,497,500,502,505,508],{},[362,484,485],{},"Cairn Terrier",[362,487,364],{},[362,489,490],{},"14 lb (6.3 kg)",[362,492,493],{},"22%",[362,495,496],{},"36%",[362,498,499],{},"52%",[362,501,468],{},[362,503,504],{},"86%",[362,506,507],{},"97%",[362,509,480],{},[344,511,512,515,517,520,523,526,529,532,535,537],{},[362,513,514],{},"Miniature Schnauzer",[362,516,364],{},[362,518,519],{},"15 lb (7 kg)",[362,521,522],{},"26%",[362,524,525],{},"41%",[362,527,528],{},"58%",[362,530,531],{},"73%",[362,533,534],{},"88%",[362,536,477],{},[362,538,539],{},"9 months",[344,541,542,545,547,550,553,556,559,562,565,568],{},[362,543,544],{},"Cocker Spaniel",[362,546,375],{},[362,548,549],{},"22 lb (10.2 kg)",[362,551,552],{},"21%",[362,554,555],{},"33%",[362,557,558],{},"48%",[362,560,561],{},"63%",[362,563,564],{},"81%",[362,566,567],{},"95%",[362,569,570],{},"11 months",[344,572,573,576,578,581,584,587,589,592,595,597],{},[362,574,575],{},"English Springer Spaniel",[362,577,375],{},[362,579,580],{},"33 lb (14.8 kg)",[362,582,583],{},"24%",[362,585,586],{},"40%",[362,588,528],{},[362,590,591],{},"74%",[362,593,594],{},"89%",[362,596,477],{},[362,598,539],{},[344,600,601,604,606,609,611,614,617,620,623,625],{},[362,602,603],{},"Beagle",[362,605,375],{},[362,607,608],{},"38 lb (17.4 kg)",[362,610,583],{},[362,612,613],{},"38%",[362,615,616],{},"55%",[362,618,619],{},"71%",[362,621,622],{},"87%",[362,624,507],{},[362,626,480],{},[344,628,629,631,633,636,639,642,644,646,648,651],{},[362,630,392],{},[362,632,386],{},[362,634,635],{},"62 lb (28.1 kg)",[362,637,638],{},"19%",[362,640,641],{},"29%",[362,643,525],{},[362,645,616],{},[362,647,531],{},[362,649,650],{},"92%",[362,652,653],{},"12 months",[344,655,656,659,661,664,667,670,672,675,678,680],{},[362,657,658],{},"Newfoundland",[362,660,397],{},[362,662,663],{},"95 lb (43.3 kg)",[362,665,666],{},"15%",[362,668,669],{},"25%",[362,671,586],{},[362,673,674],{},"56%",[362,676,677],{},"78%",[362,679,567],{},[362,681,570],{},[344,683,684,687,689,692,695,698,701,703,705,707],{},[362,685,686],{},"Great Dane",[362,688,397],{},[362,690,691],{},"113 lb (51.1 kg)",[362,693,694],{},"20%",[362,696,697],{},"31%",[362,699,700],{},"43%",[362,702,674],{},[362,704,591],{},[362,706,650],{},[362,708,653],{},[344,710,711,714,716,719,721,723,725,727,729,732],{},[362,712,713],{},"Irish Wolfhound",[362,715,397],{},[362,717,718],{},"116 lb (52.4 kg)",[362,720,666],{},[362,722,669],{},[362,724,613],{},[362,726,465],{},[362,728,591],{},[362,730,731],{},"93%",[362,733,570],{},[344,735,736,739,741,744,747,749,751,754,756,758],{},[362,737,738],{},"St. Bernard",[362,740,397],{},[362,742,743],{},"144 lb (65.2 kg)",[362,745,746],{},"14%",[362,748,552],{},[362,750,697],{},[362,752,753],{},"44%",[362,755,561],{},[362,757,622],{},[362,759,760],{},"13 months",[344,762,763,766,768,771,774,777,780,783,785,787],{},[362,764,765],{},"English Mastiff",[362,767,397],{},[362,769,770],{},"147 lb (66.9 kg)",[362,772,773],{},"16%",[362,775,776],{},"23%",[362,778,779],{},"32%",[362,781,782],{},"42%",[362,784,528],{},[362,786,564],{},[362,788,789],{},"15 months",[307,791,792],{},"Even within one size, breeds differ: at 16 weeks a Springer Spaniel was 58% grown and a Cocker Spaniel 48%. That spread is why the calculator gives a range.",[302,794,796],{"id":795},"example-a-12-week-old-medium-puppy","Example: a 12-week-old medium puppy",[307,798,799],{},"A 12-week-old puppy weighs 12 lb and is expected to be a medium dog.",[801,802,803,814,823],"ul",{},[804,805,806,809,810,813],"li",{},[311,807,808],{},"Cocker Spaniel curve:"," 33.1% grown at 12 weeks, so 12 ÷ 0.331 = ",[311,811,812],{},"36 lb",".",[804,815,816,819,820,813],{},[311,817,818],{},"English Springer Spaniel curve:"," 39.6% grown, so 12 ÷ 0.396 = ",[311,821,822],{},"30 lb",[804,824,825,828,829,813],{},[311,826,827],{},"Beagle curve:"," 38.3% grown, so 12 ÷ 0.383 = ",[311,830,831],{},"31 lb",[307,833,834,835,838],{},"The estimated adult weight is ",[311,836,837],{},"about 30–36 lb",", and the puppy is about a third of the way there. Puppies of these breeds reached 99% of adult weight at about 9 to 11 months.",[302,840,842],{"id":841},"why-not-use-a-simple-formula","Why not use a simple formula?",[307,844,845],{},"You will see quick rules online, such as \"double the weight at 4 months\" or \"divide the weight by the age in weeks and multiply by 52\". Each one is a single multiplier for every dog. The measured curves show why that can't fit everyone. Here is what you would need to multiply a 16-week (about 4-month) weight by to get the adult weight in the study:",[338,847,848,857],{},[341,849,850],{},[344,851,852,854],{},[347,853,349],{},[347,855,856],{},"Multiply the 16-week weight by",[357,858,859,866,873,881,888,896],{},[344,860,861,863],{},[362,862,364],{},[362,864,865],{},"1.5–1.9",[344,867,868,870],{},[362,869,375],{},[362,871,872],{},"1.7–2.1",[344,874,875,878],{},[362,876,877],{},"Large (Labrador)",[362,879,880],{},"2.4",[344,882,883,885],{},[362,884,397],{},[362,886,887],{},"2.3–3.2",[344,889,890,893],{},[362,891,892],{},"\"Double it\" rule",[362,894,895],{},"2",[344,897,898,901],{},[362,899,900],{},"\"÷ weeks × 52\" rule",[362,902,903],{},"3.25",[307,905,906],{},"Doubling is close for medium dogs but overshoots small ones and undershoots big ones. The ÷ weeks × 52 rule assumes a puppy grows at a steady rate until its first birthday, so it overshoots every size at 16 weeks, and small dogs by roughly double.",[302,908,910],{"id":909},"limits-of-the-estimate","Limits of the estimate",[801,912,913,919,925,931],{},[804,914,915,918],{},[311,916,917],{},"Few dogs per breed."," The study had between 3 and 37 puppies per breed, all raised at one research center and fed to keep an optimum body composition.",[804,920,921,924],{},[311,922,923],{},"Breed averages."," The curves describe the average puppy of each breed. Males and females can grow differently, and individual puppies vary.",[804,926,927,930],{},[311,928,929],{},"One large breed."," Large puppies are estimated from Labradors alone. A large dog of another breed may mature a little earlier or later.",[804,932,933,936],{},[311,934,935],{},"Not a health check."," A projected adult weight says nothing about whether your puppy is too thin or too heavy now.",[302,938,940],{"id":939},"tips","Tips",[801,942,943,949,955,961],{},[804,944,945,948],{},[311,946,947],{},"Weigh at the same time of day",", before a meal, on the same scale. For a small puppy, weigh yourself holding it and subtract your own weight.",[804,950,951,954],{},[311,952,953],{},"Re-check every few weeks."," The older the puppy, the closer the estimate, because more of its growth is behind it.",[804,956,957,960],{},[311,958,959],{},"Feed for the puppy you have."," Follow the puppy food's guide and your veterinarian's advice for its current weight and body condition, not a hoped-for adult size. The study's authors note that in large breeds, overfeeding causes bone and joint problems as well as obesity.",[804,962,963,966],{},[311,964,965],{},"Large and giant breeds grow for longer."," Ask your vet when to switch from puppy to adult food, since St. Bernards and English Mastiffs in the study were still growing after their first birthday.",{"title":968,"searchDepth":61,"depth":61,"links":969},"",[970,971,972,973,974,975],{"id":304,"depth":61,"text":305},{"id":409,"depth":61,"text":410},{"id":795,"depth":61,"text":796},{"id":841,"depth":61,"text":842},{"id":909,"depth":61,"text":910},{"id":939,"depth":61,"text":940},"PuppyWeightCalculator","Estimate your puppy's adult weight from its weight and age in weeks, using growth curves measured in 12 dog breeds from toy to giant.","md",[980,983,986,989,992,995],{"q":981,"a":982},"How big will my puppy get?","Divide its weight now by the share of adult weight puppies of its size have reached at the same age. In a study of 12 breeds, medium-sized puppies had reached about a third of their adult weight at 12 weeks, so a 12 lb medium puppy at 12 weeks points to an adult of roughly 30 to 36 lb. Treat it as a range, not a promise.",{"q":984,"a":985},"At what age is a puppy half its adult weight?","In the WALTHAM study by Hawthorne and colleagues, Papillons reached half their adult weight at about 11 weeks, the small and medium breeds at 14 to 17 weeks, Labrador Retrievers at about 19 weeks and the giant breeds at 18 to 23 weeks.",{"q":987,"a":988},"When do puppies stop growing?","The same study found that toy, small and medium breeds reached 99% of adult weight at about 9 to 11 months, Labradors at about 12 months and giant breeds at 11 to 15 months, with English Mastiffs the slowest.",{"q":990,"a":991},"Does doubling a puppy's weight at 4 months give its adult weight?","Only for some sizes. At 16 weeks the study's small breeds had reached 52 to 68% of adult weight, so doubling overshoots them, while the Labradors were at 41% and the slowest giant breeds at about 31%, so doubling undershoots. The multipliers on this page come from the measured curves for each size.",{"q":993,"a":994},"Does the calculator work for mixed breeds?","Yes, as long as you pick a sensible adult size. Go by the parents' size if you know it, or try two sizes and see where the ranges overlap. Mixed-breed puppies were not part of the study, so expect more spread.",{"q":996,"a":997},"How do I know if my puppy is a healthy weight?","Ask your veterinarian. Vets judge a puppy by body condition, how its ribs, waist and belly look and feel, and can plot its weight on growth charts such as the WALTHAM puppy growth charts, which were built from records of healthy dogs at US veterinary hospitals. A projected adult weight cannot tell you whether a puppy is too thin or too heavy today.","puppy weight calculator",{},true,[1002,1003,1004],"dog-age-calculator","cat-age-calculator","chicken-coop-size-calculator",{"title":277,"description":977},"Puppy Weight Calculator – How Big Will My Puppy Get?","2026-10-20","SZPccMVX5OclOagTQk-K4TVhehYqvu552sDo6wRV6XM",1792531289575]