Built from published equine veterinary and university extension guidance. Every result is an educational estimate and is not a replacement for advice from your own veterinarian.
Horse Calculators
Seven free tools for horse owners, covering age and life stage, body weight, feeding, condition scoring, parasite testing, vaccine planning, and routine care. Each one explains what it can and cannot tell you before you act on the number.
Horse calculator tools
Horse Age Calculator
Places a horse's age into recognized life stages such as foal, young adult, mature, and senior, without converting it to human years.
Calculate Horse Age →Horse Feed Calculator
Produces a starting daily forage and concentrate estimate from body weight and workload, to be adjusted after you see how the horse responds.
Estimate Horse Feed →Horse Weight Calculator
Estimates body weight from heart girth and body length measurements using published tape formulas rather than a livestock scale.
Track Horse Weight →Horse Vaccine Schedule
Explains which vaccines are usually discussed as core and which are risk based, so you can confirm real timing with your veterinarian.
View Horse Vaccine Schedule →Horse Body Condition Score
Walks through the Henneke style fat cover checkpoints so you can learn to read condition by hand and eye.
Check Horse Body Condition →Horse Deworming Calculator
Builds a parasite discussion around fecal egg count testing, pasture risk, and season instead of picking a product or dose for you.
Plan Horse Deworming →Horse Care Guide
Gathers daily, seasonal, and routine care checkpoints into one general reference list for owners and new yard staff.
Read Horse Care Guide →How to Choose the Right Horse Tool
Start with body weight, because feeding rates, condition targets, and most veterinary decisions are built on it. Once you have a measured estimate, move to the feed calculator, then use body condition scoring every few weeks to see whether the ration is actually working for that horse.
Treat every figure here as a starting point. Age results describe life stage rather than a human age equivalent, since no validated horse to human formula exists. Weight comes from a tape measurement and will differ from a scale. Feed output is an estimate to adjust, not a prescription, and forage quality changes it significantly.
Health planning stays with your veterinarian. Vaccine timing depends on age, region, exposure, travel, and how the horse is used, so the schedule page is context for that conversation only. Condition scoring is educational and does not diagnose disease, and any deworming decision should follow fecal egg count testing and veterinary advice rather than a page like this.