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189 tools
This free body fat calculator estimates body fat percentage based on the U.S. Navy Method and the BMI method. It gives the loss needed to reach ideal body fat.
This calculator computes any of the values in the half-life formula given the rest values. It also converts between half-life, mean lifetime, decay constant.
Free online standard deviation calculator with step-by-step calculations. Perfect for students, teachers, and professionals needing quick mathematical computations.
Calculator to compute the time to wake up or go to bed based on sleep cycle or duration of sleep required. Also learn more about sleep.
Free calculator to estimate the number of calories burned during routine daily activities or a workout based on activity duration.
This free calculator calculates the target heart rate range for maximizing exercise benefit based on age and resting heart rate.
This free concrete calculator estimates the amount of concrete necessary for a project and can account for different shapes and quantities.
This free grade calculator can calculate a weighted average grade. It accepts both numerical as well as letter grades.
Rent calculator can help you determine how much of your income should go to rent, if a rent is affordable or if you meet a landlord's rent-to-income ratio requirement.
This free LCM calculator determines the least common multiple of a given set of numbers. Also, learn more about the different methods for finding the LCM.
This stair calculator computes stair parameters such as rise, total run, angle, and stringer length based on the height, run, tread, and headroom requirements.
This free Ohm's Law calculator solves for any of the variables in the Ohm's Law equation using various units of measurement and gives out the solving steps.
Free VAT (value-added tax) calculator to find any value of the net before VAT tax amount, tax price, VAT tax rate, and final VAT inclusive price.
This free density calculator determines any of the three variables in the density equation given the other two.
Free calculator to find payback period, discounted payback period, and the average return of either steady or irregular cash flows.
Our business loan calculator helps you quickly estimate monthly payments and total loan costs, aiding in sound financial planning and understanding of your borrowing decisions.
This free due date calculator estimates the due date based on the menstrual cycle, ultrasound, conception date, or IVF transfer date.
This free ovulation calculator provides estimates of a person's possible ovulation windows and corresponding due dates over six menstrual cycles.
Detailed free budget calculator to plan personal finances with Debt-to-Income (DTI) ratio and expense breakdown. Also, download our free budget template.
Use this pace calculator to plan your running pace per mile in order to determine how fast you need to run to finish your race within a certain time.
This calculator computes body fat percentage using methods from the Army Body Fat Assessment of the Army Body Composition Program.
This free fat intake calculator estimates the amount of dietary fat a person should consume daily based on age, height, weight, and activity.
This free quadratic formula calculator solves the quadratic formula given values for a, b, and c. Also, learn more about its derivation.
This free root calculator determines the roots of numbers, including common roots such as a square root or a cubed root.
