Percentage Calculators
A complete set of free percentage calculators. Each tool focuses on one kind of percentage problem, runs entirely in your browser and needs no signup.
Tools in this collection
- Percentage Calculator — Increase, Decrease, X of Y Free percentage calculator: find a percentage increase, decrease, or X out of Y in seconds. 100% browser-based, no signup.
- Percentage Increase Calculator — Percent Change Calculate the percentage increase or decrease between two values, or find the new value after a percent change. Free, instant and browser-based.
- Percentage Difference Calculator — Compare Values Free percentage difference calculator: compare two values using their average, and see the percentage change between them side by side. Instant and private.
- X out of Y Calculator — Score to Percentage Convert a score X out of Y into a percentage and an estimated letter grade instantly. Free, private, 100% browser-based calculator.
- Percent Off Calculator — Sale Price & Savings Work out the sale price and amount saved from an original price and a percentage off, or reverse a discount to find the original price. Free and instant.
- Percentage Error Calculator — Accuracy Check Enter a measured and an accepted value to get the percent error, absolute error and signed deviation instantly, with the formula and worked examples.
- Margin Calculator — Gross Margin & Markup Free margin calculator: enter cost and selling price to get gross margin, markup and profit, or find the price needed to hit a target margin.
- Fraction Calculator — Simplify & Convert Fractions Perform fraction arithmetic, simplify fractions, and convert between fractions and decimals. Free online fraction calculator tool.
Related guides
- How to Calculate the Percentage of a Number
- Percentage Between Two Numbers: Formula
- How to Calculate X out of Y as a Percentage
- Percentage Points vs Percent: Don't Mix Them Up
- Percentage Difference vs Percentage Change
- Percentage Increase and Decrease Formula
- Convert Percentages to Decimals and Fractions
- How to Calculate a Discount Percentage
- Reverse Percentage: Find the Original Price
- Percent Error Formula: Measured vs Actual
- Margin vs Markup Formula: What's the Difference?