Health calculators
Fitness age, calories, macros, BMI and water, with the same formulas as the app. It all runs in your browser, so nothing you type leaves this page.
About you
Calculated on your device. Nothing is sent or saved.
Uses your details above. Adding your resting heart rate makes it a little more accurate.
The VO2max your Apple Watch or other wearable measured.
Walk one mile (1.6 km) as fast as you can on flat ground, then check your heart rate right away.
Run, or run and walk, as far as you can in 12 minutes on a track or a flat route.
US lab tests of about 16,000 people. The app's default.
Healthy Norwegian volunteers. A stricter benchmark, so the same fitness reads older.
Your fitness age
Your VO2max was estimated, not measured, so this can be off by a couple of years. For a more accurate number, use a wearable that measures VO2max (Apple Watch recommended) and track it in the Disciplines app.
Daily calories
- kcal
Protein and fat already add up to more than your daily calories. Lower one of them.
Your BMI
-
BMI can't tell muscle from fat, so it can read high for muscular people.
Water per day
- L
Drink more on hot days and whenever you sweat a lot.
These calculators give general estimates for healthy adults and are not medical advice. Talk to a doctor before big changes to your diet or exercise.
Track it over time
Disciplines keeps these numbers up to date from your Apple Health data, privately on your iPhone.