Free Online
Tools & Calculators

Calculate your monthly mortgage payment, total interest, and total cost of your home loan.

See how your money grows over time with the power of compound interest.

Calculate monthly payments, total interest, and payoff date for any loan.

Calculate percentages, percentage change, and percentage of a number.

Add, subtract, multiply, and divide fractions with step-by-step solutions.

Calculate the area of common shapes including rectangles, circles, and triangles.

Calculate speed, distance, or time using the fundamental velocity equation.

Calculate force, mass, or acceleration using Newton's second law (F = ma).

Calculate kinetic energy, mass, or velocity using KE = 1/2 mv².

Calculate your Body Mass Index and find out your weight category.

Estimate your daily calorie needs based on your age, weight, height, and activity level.

Estimate your body fat percentage using the U.S. Navy method.

Calculate how many gallons of paint you need for a room or surface.

Calculate how much flooring material you need for any room.

Calculate cubic yards of concrete needed for slabs, footings, and columns.

Calculate tip amount and total bill, with options to split between people.

Calculate sale price, savings amount, and discount percentage.

Calculate exact age in years, months, and days from a birth date.

Generate cryptographically secure UUID v4 identifiers.

Format, validate, and beautify JSON data.

Decode JWT tokens to view header, payload, and expiration.

Generate SHA-256, SHA-512, and MD5 hash digests.

Parse cron expressions into human-readable schedules.

Calculate network address, subnet mask, and usable hosts.