Health & fitness with direct entry.
BMI, body fat, macros, 1RM, running pace and pregnancy.
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Pace Calculator
Running pace, race time and treadmill km/h, with splits and a printable pace band.
1RM & Training Load Calculator
Estimate your one-rep max (1RM) from a lighter set, without testing your maximum, and see the load ranges for each training goal.
Biological and Chronological Age Calculator
Exact chronological age from your date of birth, and biological age from 9 routine blood tests with the PhenoAge formula. Educational; not a substitute for a doctor.
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BMI & Healthy Weight Calculator
Calculate your BMI, see which range it falls in and the weight range considered healthy for your height.
Body Fat Calculator
Calculate your body fat percentage with the U.S. Navy method, Deurenberg, or 3 and 7 skinfolds, with the healthy range for your age.
Macro & BMR Calculator
Calculate your basal metabolic rate (BMR), daily energy expenditure (TDEE) and a macronutrient split to lose or gain weight.
Pregnancy Calculator
Gestational age and due date from the last period, an ultrasound, conception or IVF, with the week-by-week calendar and the dates of prenatal tests.
Workout Split Generator
Build a weekly training split (Full Body, Push/Pull/Legs or Upper/Lower) and see the week laid out by day.
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The full list for this category, in alphabetical order.
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FAQ
Frequently asked questions
Answers about plans, privacy and using the tools.