Health & fitness
Recognised formulas for your body, your sleep and your training. A guide, not a diagnosis.
- Calorie calculator Estimate how many calories you need a day, and your basal metabolic rate.
- BMI calculator Work out your body mass index and see the WHO weight category for adults.
- Ideal weight calculator Compare the Devine, Robinson, Miller, Hamwi and Lorentz formulas with the WHO normal BMI range.
- Due date calculator Find your estimated due date, how many weeks pregnant you are and the key dates of your pregnancy.
- Sleep calculator Find when to go to bed or wake up in whole sleep cycles of about 90 minutes.
- Breathing exercise Guided breathing with a shape that grows and shrinks: coherent, box or 4-7-8 breathing.
- HIIT timer An interval timer for Tabata, EMOM and your own work and rest rounds, with beeps.
- One-rep max calculator Estimate your 1RM from a set of reps with seven formulas, plus a table of training loads.
- VO2 max & MAS calculator Estimate your VO2 max and maximal aerobic speed from a running test, with your training paces.