256 Tools

Percentage Calculator

Result
50

Related external tools

Some links are affiliate links.

UdemyAn online learning marketplace with over 250,000 courses on coding, design, business, and more. Courses are taught by industry experts and available at your own pace. Frequent sales make it one of the most affordable ways to learn new skills.AmazonThe world's largest online marketplace for shopping, electronics, books, software, and more. Fast shipping, easy returns, and a vast product catalog make it a go-to for everyday purchases. Prime membership adds streaming, free shipping, and exclusive deals.

Related tools

Savings Goal CalculatorPlan your savings with compound interest. Enter a monthly amount to see future value, or set a goal to find how much to save each month. Visual growth chart, inflation-adjusted real value — free and 100% private.Discount CalculatorCalculate the final price after percent-off and fixed discounts, stack a coupon, add or remove tax, and see how much you save — all in your browser.Age CalculatorFind your exact age in years, months and days from your date of birth, plus total days, next birthday, the day of the week you were born and your zodiac signs.Tax CalculatorAdd or remove VAT and sales tax: enter a price and rate to get the net, tax and gross amounts, with presets and rounding. Runs in your browser.

Four common percentage calculations in one place. Find what a percentage of a number is, what percent one number is of another, the value after an increase or decrease, or the percent change between two numbers. Everything runs in your browser — nothing is uploaded.

How to use

  1. Pick the type of calculation with the tabs.
  2. Enter the two numbers.
  3. Read the answer and copy it.

Percentage basics

A percentage is a part out of 100. To take X% of a number you multiply by X/100. To increase or decrease by X% you multiply by (1 + X/100) or (1 − X/100). The percent change between two values is the difference divided by the original, times 100.

A bar showing 25 percent of a whole25%100%

What you can calculate

Percentage of a number

Find what, say, 25% of 200 is in one step.

X is what percent of Y

Turn two numbers into a percentage, like a score out of a total.

After an increase or decrease

Apply a percentage rise or fall to a starting value.

Percent change

See how much a value went up or down from one number to another.

Common use cases

Test scores

Convert a number of correct answers into a percentage score.

Price changes

Work out a price after a markup or a markdown.

Progress & goals

Express how far you are toward a target as a percentage.

Growth & comparisons

Calculate year-over-year growth or the change between two figures.

Notes & tips

  • You can't take a percentage of zero as a base — that result is shown as 0.
  • For increases and decreases, the percentage always refers to the starting value.
  • All calculations run on your device — nothing is sent to a server.

Frequently asked questions

How do I find X% of a number?
Use the first tab, enter the percentage and the number, and the tool multiplies by X/100. For example, 25% of 200 is 50.
How do I work out what percent one number is of another?
Use the second tab. Enter the part and the total, and the tool divides and multiplies by 100. For example, 50 is 25% of 200.
How do I calculate a price after a percentage increase?
Use the increase/decrease tab, enter the starting value and the percentage, and choose Increase. 200 increased by 10% is 220.
What is percent change?
Percent change is how much a value rose or fell relative to the original, as a percentage. From 200 to 250 is a 25% increase.
Is my data uploaded?
No. Everything is calculated in your browser. Nothing is sent to a server and there is no sign-up.

We use cookies for ads and analytics.