Home & DIY Calculators

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

Paint Coverage Calculator

Calculate paint needed for your project

Calculate flooring materials needed

Calculate materials for outdoor projects

Calculate heating and cooling BTU needs for any room

Calculate wall square footage

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.

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

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