Lifestyle & Daily Tools Calculators

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

Sleep Calculator

Calculate ideal sleep and wake times

Calculate daily water intake needs

Calculate macronutrient needs

Calculate ideal bedtime

Calculate total daily energy expenditure

Calculate running pace, time, or distance with race predictions

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

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

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

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

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.