LeanCraft

BMI calculator and body metrics utility

LeanCraft - BMI & Body Metrics Calculator

Use LeanCraft to calculate BMI, estimated body fat, BMR, TDEE, goal calories, waist-to-height ratio, waist-to-hip ratio, lean mass, and browser-local progress history.

This free BMI calculator and body metrics dashboard supports metric and imperial units, body composition estimates, calorie planning, measurement history, CSV export, CSV import, and a copyable summary for personal fitness tracking.

BMI — Enter your metrics to begin.

Measurements

Enter your current stats. Toggle units anytime and LeanCraft will convert the visible values.

Unit system Metric (kg/cm) Imperial (lb/in) Sex Male Female Age Height Weight Waist Hips Neck

Plan Settings

Choose your activity level, goal, and body fat estimate method.

Activity level Sedentary Light Moderate Active Very active Goal Lose weight Maintain Gain muscle Body fat method Deurenberg (BMI) US Navy (tape)

Actions

Save, export, import, copy, donate, or reset your LeanCraft dashboard.

Save measurement Copy summary Donate Export CSV Import CSV Reset inputs Clear history

LeanCraft Command Center

Results update as you type.

Ready

BMI —

Maintenance —

Goal Target —

Body Composition

BMI, waist ratios, estimated body fat, lean mass, and calorie targets.

What this means

Enter your measurements to generate a LeanCraft summary.

Measurement History

Saved locally in this browser. Export CSV if you want a backup.

0 saved

No saved measurements yet.

LeanCraft - BMI & Body Metrics Calculator is for informational purposes only and is not medical advice. BMI and body fat formulas are rough estimates and may not reflect individual health, athletic build, pregnancy, medical conditions, or clinical risk.