Lifestyle & Health Tools

Health and daily-life calculators for fitness, sleep planning, and personal benchmarks.

BMI Calculator

Calculate body mass index from height and weight instantly.

Estimate calorie expenditure from MET, body weight, and duration.

Calculate recommended bedtime based on wake-up time and sleep cycles.

Estimate maintenance calories and macro targets using Mifflin-St Jeor and activity multipliers.

Estimate body fat using US Navy equations and compare against BMI-based proxy output.

Compute 5-zone training ranges from max-HR formulas or custom max HR, with optional Karvonen method.

Estimate personal metrics instantly and keep your routines consistent with private local calculations.