All Calculators
Browse 53 free calculators.
Featured tool
3D Height Comparison Calculator
Compare two heights visually in centimeters or feet and inches.
Age Calculator
Calculate your exact age in years, months, and days from your date of birth.
Calculate →Average Calculator
Calculate the average (mean) of up to four numbers.
Calculate →Board Foot Calculator
Calculate board feet for lumber pricing from thickness, width, and length.
Calculate →Break-Even Calculator
Calculate how many units you need to sell to break even, from fixed costs and per-unit ec…
Calculate →Carpet Calculator
Calculate how much carpet you need in square yards, including a waste allowance.
Calculate →Commission Calculator
Calculate commission earned from total sales and a commission rate.
Calculate →Concrete Pad Calculator
Calculate concrete volume for a small equipment pad (e.g. AC unit, shed, hot tub base).
Calculate →Concrete Slab Calculator
Estimate how many cubic yards of concrete you need for a slab based on length, width, and…
Calculate →Cubic Feet Calculator
Calculate the volume of a space in cubic feet from its length, width, and height.
Calculate →Cubic Yard Calculator
Convert length, width, and height in feet into cubic yards — for any bulk material.
Calculate →Date Difference Calculator
Calculate the number of days between two dates.
Calculate →Deck Calculator
Calculate how many decking boards you need based on deck area and board coverage.
Calculate →Deck Cost Calculator
Estimate the total material cost of a deck from its area and your cost per square foot.
Calculate →Discount Calculator
Find the sale price of an item after a percentage discount.
Calculate →Driveway Gravel Calculator
Estimate gravel volume for a driveway, including a compaction allowance.
Calculate →Fence Calculator
Calculate how many fence posts you need based on total fence length and post spacing.
Calculate →Fence Cost Calculator
Estimate the total material cost of a fence from post and panel counts and prices.
Calculate →Flooring Calculator
Calculate how many flooring boxes you need based on room area and box coverage.
Calculate →Fuel Cost Calculator
Estimate the fuel cost of a trip from distance, your car's MPG, and the price of gas.
Calculate →GPA Calculator
Calculate your weighted grade point average from course credits and grade points.
Calculate →Grade Calculator
Calculate a weighted final grade from category weights and scores (e.g. homework, tests, …
Calculate →Gravel Calculator
Estimate how many cubic yards of gravel you need for a driveway, path, or base layer.
Calculate →Hourly to Salary Calculator
Convert an hourly wage into an equivalent annual salary.
Calculate →Hours Calculator
Convert hours and minutes into a single decimal hours figure.
Calculate →