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Free tools
Calculators, no strings
Work out a fasting schedule, a daily calorie target, or where you stand today. Everything runs in your browser — no sign-up, no email, nothing stored.
Intermittent fasting calculatorPick a fasting schedule and your first meal, and see exactly when to start and break each fast.→TDEE and macro calculatorWork out the calories you burn in a day, then a daily target and macro split for your goal.→BMI calculatorCheck your BMI, the category it falls in, and the weight range that's considered healthy for your height.→
Then let the app do it
These are one-off numbers. Fastiq keeps them current.
Your fasting timer, calories, macros, and weight all update themselves as you go — photograph a meal and it fills in the rest.