All Calculators
Browse 53 free calculators.
Featured tool
3D Height Comparison Calculator
Compare two heights visually in centimeters or feet and inches.
Markup Calculator
Calculate the selling price of an item from its cost and your desired markup percentage.
Calculate →MPG Calculator
Calculate your car's fuel economy in miles per gallon.
Calculate →Mulch Calculator
Find out how many cubic yards of mulch you need to cover a garden bed at your chosen dept…
Calculate →Overtime Calculator
Calculate overtime pay from your regular hourly rate, overtime hours, and pay multiplier.
Calculate →Paint Calculator
Estimate how many gallons of paint you need based on wall area and number of coats.
Calculate →Percentage Calculator
Calculate what a given percentage of a number is — fast and accurate.
Calculate →Percentage Difference Calculator
Calculate the percentage difference between two values, regardless of order.
Calculate →Percentage Increase Calculator
Calculate the percentage increase (or decrease) between an original and a new value.
Calculate →Profit Calculator
Calculate total profit from revenue and total costs.
Calculate →Profit Margin Calculator
Calculate your profit margin percentage from revenue and cost.
Calculate →Ratio Calculator
Simplify a ratio between two numbers down to its decimal equivalent.
Calculate →Revenue Calculator
Calculate total revenue from units sold and price per unit.
Calculate →ROI Calculator
Calculate return on investment (ROI) as a percentage from your gain and cost.
Calculate →Roof Pitch Calculator
Calculate roof pitch expressed as "X in 12" from rise and run.
Calculate →Roof Shingle Calculator
Calculate how many roofing squares of shingles you need, including waste.
Calculate →Roof Slope Calculator
Calculate roof slope as a percentage from rise and run.
Calculate →Roof Square Footage Calculator
Estimate total roof surface area from your home's footprint and roof pitch.
Calculate →Salary to Hourly Calculator
Convert an annual salary into an equivalent hourly wage.
Calculate →Sales Tax Calculator
Calculate the total price of an item including sales tax.
Calculate →Simple Interest Calculator
Calculate simple interest earned or owed from principal, rate, and time.
Calculate →Sod Calculator
Calculate how many pallets of sod you need to cover a lawn area.
Calculate →Square Footage Calculator
Calculate the square footage of a room or space from its length and width.
Calculate →Stair Calculator
Calculate the number of steps needed for a staircase from total rise and riser height.
Calculate →Tile Calculator
Calculate how many tiles you need for a floor or wall, including waste for cuts.
Calculate →