Health & Fitness Tools

Free health and fitness calculators that run in your browser — barbell plate loading, BMI and BMR, cycling power, bike gearing and tire pressure, beer calories, and more. Nothing is uploaded, and there is no account or sign-up.

8 tools available

Barbell Plate Calculator

Plates to load per side, any bar or set, lb/kg.

Beer Calorie Calculator

Beer calories from ABV & serving size, or homebrew OG/FG.

Beta Carotene Converter

Beta-carotene to bioavailable retinol (RAE) & daily value

Cycling Power Calculator

Estimate cycling watts & calorie burn from speed & weight

Bike Gear Calculator

Gear ratio, gear inches & cassette jump calculator

Bike Tire Pressure Calculator

Instant front/rear PSI & BAR from weight, width, surface.

BMI Calculator

Adult BMI in metric or imperial, with WHO category

BMR Calculator

Resting calories per day, Mifflin-St Jeor

Every tool runs in your browser — no upload, no account, free.