Calculation playbook
Fitness Math Glossary
METs, pace, protein targets and activity estimates.
Quick definitions
Use this page as a plain-language reference while using the related tools. The goal is not to replace specialist advice; it is to make common calculation terms easier to recognize.
Why the terms matter
Most mistakes happen when two similar words are treated as the same thing. A rate is not the same as a total, a monthly number is not the same as a yearly number, and an estimate is not a guarantee. The linked tools show the formula so you can see which number is being used where.
Good checking habit
Change one input at a time, recalculate, and compare the result. That makes the most sensitive part of the calculation obvious.
Related tools
BMI CalculatorCalculate body mass index from height and weight, with the standard adult BMI category.Calorie Needs CalculatorEstimate daily maintenance calories using the Mifflin-St Jeor equation and an activity multiplier.Protein Target CalculatorEstimate a daily protein target from body weight and grams per kilogram.Walking Calorie CalculatorEstimate walking calories from weight, time and pace intensity.Hydration CalculatorEstimate a simple daily water target from body weight and exercise time.Pregnancy Due Date CalculatorEstimate a due date from the first day of the last menstrual period using the common 280-day method.