Health and Fitness
BMI, calories, energy expenditure, heart rate, pace, speed and hydration, always as informative estimates.
These calculators turn measurements into reference numbers: BMI from weight and height, estimated energy expenditure by activity and duration, heart rate range by age, pace and speed from distance and time. The ranges used are public reference values and the result is informative: it is not a diagnosis, it does not prescribe training and it does not replace a health professional's assessment.
How to use these calculators
- 1Enter weight and height in consistent units before calculating BMI or energy expenditure.
- 2For pace and speed, use distance and time in the same unit — minutes and seconds, not decimal minutes.
- 3Hydration and calorie estimates change with weather, intensity and individual metabolism.
Applications in this category
Each application groups related functions on one page, with a guide for each one.
Calculators in this field
1 calculatorsFrequently asked questions
Does BMI work for athletes?
As a population reference it does not separate muscle mass from fat. For athletes, other measurements are more informative.
Does the result replace a consultation?
No. It is an informative estimate and does not replace medical assessment, diagnosis or a training plan.