Real math for the working rider.
Bootstrapped Figures for the Working Rider — free calculators for feed, tack, land, and breeding. Just the numbers you actually need.
Browse by category
7 calculators
Health & Nutrition
Feed, hay, weight & body condition
5 calculators
Tack & Fit
Bits, blankets, saddles & sizing
7 calculators
Barn & Land
Land, fencing, cost & shipping
2 calculators
Breeding
Foaling dates & coat color
21 finders
Finders
Hay, blanket, breed & more -- answer a few questions
7 tools
Converters & Lookups
Hands to centimeters
Start here
Foal Coat Color Calculator
Predict possible foal coat colors from sire and dam genetics — the single highest-demand search on the whole site.
Blanket Size Calculator
Get the right blanket size from your horse's measurements before blanket season hits in October.
Deworming Schedule
Build a rotation schedule by season and region to keep parasite resistance down.
Body Condition Score Calculator
Score your horse's body condition on the 1–9 scale and track it over time.
Guides
Feeding Horses: Hay, Grain and Supplements
How much forage a horse needs, when grain and supplements help and how to change feed safely.
How to Estimate Your Horse's Weight Without a Scale
Measure heart girth and length, use the formula, and know what the number is good for.
Saddle Fit and Choosing a Seat Size
Choose a saddle type, find a seat size and check fit on both horse and rider.
Pasture, Acreage, Fencing and Turnout Planning
How many acres per horse, how to manage turnout and how to compare fence types and cost.
All HorseCalcs tools
Health & Nutrition
Body Condition Score Calculator Deworming Schedule Feed Calculator Hay Calculator Heat Index Calculator Horse Age Calculator Horse Weight CalculatorTack & Fit
Bit Size Calculator Blanket Size Calculator Hands to Inches Converter Rider Weight Calculator Saddle Seat Size CalculatorBarn & Land
Acres per Horse Calculator Arena Sand Calculator Bedding Amount Calculator Cost of Owning a Horse Horse Fence Cost Calculator Horse Shipping Cost Calculator Towing Capacity CalculatorFinders
Hay Finder Blanket Finder Board or Keep at Home? Feed Finder First-Horse Readiness Saddle Type & Fit Checker Riding Style & Discipline Finder Breed Match Supplement Needs Checker Pasture & Turnout Setup Horse Name Finder Easy Keeper or Hard Keeper? Fence Type Finder Bit Finder Bedding Finder Trailer Finder Fly Control Plan Shoes, Boots or Barefoot? Arena Footing Finder Should I Breed My Mare? Deworming Approach FinderNo calculators match your search.
How HorseCalcs works
Horse care is full of small calculations and choices: how much hay to buy, how much sand an arena needs, whether a truck can tow a trailer, which bedding or feed suits a horse. HorseCalcs does the arithmetic and explains the thinking, so you can see how each answer was reached and where it came from. Each tool shows its method and names its sources, and the finders explain why a result fits and when it does not.
Where to start
- Feeding: estimate weight with the Horse Weight Calculator, then plan forage with the Hay Calculator.
- Choosing between options: try the Hay Finder, the Feed Finder or the Bedding Finder.
- Thinking about a first horse: take the First-Horse Readiness quiz and run the Cost of Owning a Horse calculator.
- Hauling: check the Towing Capacity Calculator and read the safety notes.
Read more about the site, how we calculate and our disclaimer. Spotted a mistake? Tell us.