Health & Fitness
VO2 Max Calculator — Complete Guide
Use this free VO2 max calculator to calculate results instantly. Accurate, mobile-friendly and no sign-up needed.
Health & Fitness guides
In-depth, step-by-step guides for every tool — formulas, worked examples, tips and FAQs. 37 articles · page 2 of 2.
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Health & Fitness
Marathon Time Predictor — Complete Guide
Free online marathon time predictor — enter your values and get instant, accurate results with formula and breakdown.
Health & Fitness
Swimming Pace Calculator — Complete Guide
Calculate in seconds with our free swimming pace calculator: simple inputs, instant results, charts and a shareable link.
Health & Fitness
Hiking Time Calculator — Complete Guide
Calculate in seconds with our free hiking time calculator: simple inputs, instant results, charts and a shareable link.
Health & Fitness
Body Surface Area Calculator — Complete Guide
Free online body surface area calculator — enter your values and get instant, accurate results with formula and breakdown.
Health & Fitness
Healthy Weight Range Calculator — Complete Guide
Free online healthy weight range calculator — enter your values and get instant, accurate results with formula and breakdown.
Health & Fitness
Calories Burned Walking Calculator — Complete Guide
Use this free calories burned walking calculator to calculate results instantly. Accurate, mobile-friendly and no sign-up needed.
Health & Fitness
Calories Burned Running Calculator — Complete Guide
Use this free calories burned running calculator to calculate results instantly. Accurate, mobile-friendly and no sign-up needed.
Health & Fitness
Calories Burned Cycling Calculator — Complete Guide
Calculate in seconds with our free calories burned cycling calculator: simple inputs, instant results, charts and a shareable link
Health & Fitness
Target Heart Rate Calculator — Complete Guide
Calculate in seconds with our free target heart rate calculator: simple inputs, instant results, charts and a shareable link.
Health & Fitness
Resting Heart Rate Calculator — Complete Guide
Calculate in seconds with our free resting heart rate calculator: simple inputs, instant results, charts and a shareable link.
Health & Fitness
Body Frame Size Calculator — Complete Guide
Use this free body frame size calculator to calculate results instantly. Accurate, mobile-friendly and no sign-up needed.
Health & Fitness
Ideal Sleep Duration Calculator — Complete Guide
Calculate in seconds with our free ideal sleep duration calculator: simple inputs, instant results, charts and a shareable link.