About TrainMath
An independent fitness calculator site — built to be checked, not just believed.
What this site is
TrainMath is a small, independent collection of strength, running and nutrition calculators. Each tool publishes the exact formula it uses (Epley/Brzycki/Lombardi for 1RM, Riegel for race prediction, Mifflin-St Jeor for calorie needs, the ISSN 1.6–2.2 g/kg range for protein), a worked example you can verify with a pocket calculator, and honest limitations.
What this site is not
No fake authors, no stock-photo "team", no invented credentials. There is no person here pretending to be someone they are not — the formulas do the talking, and every one of them is cited so you can check the primary source yourself.
How the numbers are made
All calculations run in your browser (JavaScript, no server). Nothing you type is sent anywhere. Formulas come from peer-reviewed or widely validated sources, named on each page. Where formulas disagree (1RM estimates), all results are shown instead of hiding the spread.
Contact
Found a wrong number? Email jimny2026a@gmail.com — corrections are the fastest way this site gets better.