Free everyday calculators
Know the numbers.
Simple calculators for money, work, fitness, everyday life, and more.
Popular tools
Start with something useful.
Career
Raise Calculator
See how much more you'll earn after a raise.
Money
Hours of Work Calculator
See how many hours of your work a purchase really costs.
Chemistry
Molarity Calculator
Calculate solution molarity from moles or mass.
Physics
Kinetic Energy Calculator
Calculate kinetic energy from mass and velocity.
Math
Percentage Calculator
Find a percentage of a number, what percent one number is of another, or percent change.
Money
Tip Calculator
Calculate the tip, total bill, and each person's share.
Fitness
BMI Calculator
Calculate your body mass index and see your healthy weight range.