Health & Fitness
125 free health & fitness tools in the Calculators & Converters collection — every one runs in your browser with no signup and no uploads. Page 2 of 2.
Steps to Calories Calculator
Convert any step count to calories burned — with distance, pace, fat burned, and daily projections.
Wilks Calculator
Compare your powerlifting total across any bodyweight class.
Calories Burned Running Calculator
Find out exactly how many calories your run burns — by speed, weight and distance or time.
DPI / Dots Calculator
Calculate PPI for screens and DPI for print — find the right resolution in seconds.
Beep Test Calculator
Find your VO2 max and fitness rating from your 20m shuttle run level and shuttle.
Brzycki 1RM Calculator
Estimate your one-rep max from any rep-weight set using the Brzycki formula.
Cooper Test Calculator
Estimate VO2max from your 12-minute run — with age and sex fitness norms.
Epley 1RM Calculator
Estimate your one-rep max from any submaximal lift in seconds.
Treadmill Pace Converter
Convert treadmill speed to running pace, finish times and calorie burn instantly.
Calorie Cycling Calculator
Plan high, medium, low and rest-day calories around your training week.
Wendler 5/3/1 Calculator
Generate your full 4-week 5/3/1 cycle — sets, weights, AMRAP targets and progression.
Reverse Diet Calculator
Ramp calories back to maintenance with minimal fat gain.
Running Economy Calculator
Calculate your oxygen cost per km, energy cost (Cr) and running efficiency from a sub-maximal VO2 test.
TDEE Calculator — Katch–McArdle & Cunningham
The most accurate lean-mass TDEE: Katch–McArdle + Cunningham, with solve-for-body-fat mode.
Pregnancy Due Date Calculator
Find your estimated due date using LMP, conception, IVF transfer, or ultrasound dating.
Ovulation Calculator
Find your fertile window and estimated ovulation date for the next 1–6 cycles.
Pregnancy Week Calculator
Find out exactly which week of pregnancy you are in and see what comes next.
Running Pace to Speed Converter (Tempo to mph / km/h)
Convert any running pace to mph, km/h and m/s — plus instant race finish times.
Army Body Fat Calculator
Estimate body fat with the official U.S. Army AR 600-9 circumference formula and check your Army standard.
Fat-Burning Zone Calculator
Find the exact heart-rate range where your body burns the most fat per minute.
Hydration During Exercise Calculator
Know exactly how much to drink before, during and after your workout.
Protein Per Meal Calculator
Find out exactly how much protein to eat at each meal for your body weight and goal.
Heart Rate Zone Calculator
Find your 5 training zones using Karvonen or % Max HR.
VO2max From Race Time Calculator
Derive your VDOT and five training pace zones from any recent race result.
Calories in Recipe Calculator
Total calories, macros and per-serving breakdown for any home-cooked dish.