Percentage Calculator

Work out percent of a number, what percent one number is of another, percentage increase or decrease, discounts, tips, sales tax and reverse percentages. Free, ad-free, and every answer updates as you type.

Just ask

Describe your percentage question in your own words and get the answer with the working.

The three everyone needs

Start here — this covers most questions.

Percent of a number

What is%of?
30

What percent is it

is what percent of?
15%

Percentage increase / decrease

Fromto?
+25% increase

Money

Discount

Pricewith% off
67.49 · saves 22.5

Tip & split

Billtip%split
76.11 total · 38.05 each

Add tax or markup

Amountplus%
108.25 · tax 8.25

Less common

Find the whole

is%of what?
200

Remove a percentage

Totalincludes%
100 · removed 20

Percentage difference

Betweenand
40%

All percentage calculators

Nine free calculators on one page — jump straight to the one you need.

Percent of a number calculator

Find X% of any value

What percent is it calculator

Part vs. whole as a percent

Percentage increase & decrease calculator

Change between two values

Discount calculator

Sale price and amount saved

Tip & split bill calculator

Bill, tip, and per-person share

Sales tax calculator

Add tax or markup to a price

Find the whole calculator

Reverse a percentage back to the total

Remove a percentage calculator

Strip VAT or tax out of a total

Percentage difference calculator

Compare two values fairly

Markup calculator

Cost to selling price, markup % and margin

Common percentage answers

The percentages people look up most, worked out. Use the calculators above for any other numbers.

What is 10% of 100?10
What is 15% of 60?9
What is 20% of 50?10
What is 25% of 80?20
What is 30% of 200?60
What is 5% of 1,000?50
What is 40% of 75?30
What is 60% of 90?54
What is 75% of 400?300
15 is what percent of 60?25%
30 is what percent of 200?15%
45 is what percent of 60?75%

Percentage questions people ask

How do I calculate a percentage of a number?

Multiply the number by the percentage, then divide by 100. Example: 20% of 80 = 0.20 × 80 = 16.

How do I find what percent one number is of another?

Divide the part by the whole and multiply by 100. Example: 25 is what percent of 200? 25 ÷ 200 × 100 = 12.5%.

How do I calculate percentage increase or decrease?

Subtract the old value from the new value, divide by the absolute old value, and multiply by 100. Example: 120 to 150 is (150 − 120) ÷ 120 × 100 = +25%.

How do I add sales tax to a price?

Multiply the price by (1 + tax rate ÷ 100). Example: $50 + 8% tax = $50 × 1.08 = $54.

How do I find the original price before a discount?

Divide the sale price by (1 − discount ÷ 100). Example: $80 after 20% off → $80 ÷ 0.80 = $100.

What is the difference between percentage change and percentage difference?

Percentage change uses the original value as the base. Percentage difference uses the average of both values, so the order of the numbers doesn't matter.

How do I calculate a tip and split the bill?

Multiply the bill by the tip percent ÷ 100, add it to the bill, then divide by the number of people. Example: $64.50 with an 18% tip is $76.11 total, or $38.06 each between two people.

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