Human Calculations

Free, fast, and accurate calculators for everyday life. From health metrics to financial planning, we've got you covered.

89+ calculators | Always free | No sign-up required

Featured Calculators

Find the perfect calculator for your needs

20 tools

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

6 tools

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

39 tools

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

9 tools

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

6 tools

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

5 tools

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

4 tools

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

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