Body & Health Calculators

Track your BMI, BMR, body fat, ideal weight, and other key health metrics with our free calculators.

BMI Calculator

Calculate your Body Mass Index

Calculate your Basal Metabolic Rate

Find your ideal weight range

Estimate your body fat percentage

Calculate your target heart rate for exercise

Calculate reconstitution concentration and draw volume from vial amount and diluent

Calculate your exact age, countdown to birthdays, find birth days, and explore time-based calculations.

Plan your retirement, calculate tips, convert salaries, and reach your savings goals faster.

Convert between temperature, weight, volume, cooking, and length units instantly.

Optimize your sleep, hydration, nutrition, and daily energy expenditure with science-backed calculators.

Estimate paint, flooring, concrete, and wall coverage for your home improvement projects.

IV drip rate, medication dosage, weight-based dose, and pediatric reference calculators for EMT and paramedic exam prep.