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All Horse Calculators

Nine free calculators for the numbers that drive horse care. Everything runs in your browser, nothing is stored, and no account is needed.

Free · no sign-up Runs in your browser Published formulas, sources cited

Calculators

Horse Weight CalculatorFree horse weight calculator. Enter heart girth and body length to estimate your horse, pony or foal weight in pounds an…
Horse Feed CalculatorWork out how much to feed your horse each day. Enter body weight and work level to get daily hay and concentrate in poun…
Winter Hay CalculatorCalculate how much hay your horse or herd needs for winter. Get total pounds, bale count, waste allowance and estimated …
Horse Water Intake CalculatorHow much water does a horse drink? Estimate daily water intake in gallons and litres from body weight, weather and workl…
Horse Dewormer Dosage CalculatorCalculate the volume of dewormer paste to give from your horse’s body weight. Covers ivermectin, pyrantel and fenbendazo…
Horse Body Condition ScoreEstimate your horse’s body condition score on the Henneke 1–9 scale with a simple five-question check, and see what to c…
Horse Height ConverterConvert horse height between hands, inches, centimetres and metres. Includes the hand-height shorthand, the 15.2 trap, a…
Horse Age CalculatorConvert horse age to human years with the standard comparison chart. Shows life stage, growth status and what the equiva…
Ideal Weight for Horse HeightFind the expected weight range for a horse of a given height and build, and compare it with the actual weight. Includes …
Horse Stall Size CalculatorWork out the minimum horse stall size for your animal. Combines the BHS and Defra minimum stable sizes with the rule tha…

Guides and reference