Calculators · FREE

Percentage Calculator

Calculate percentages, increases and differences. Processing for supported tools happens locally in your browser.

About Percentage Calculator

Use this browser-based utility for everyday tasks. Review output before relying on it and retain a copy of important originals.

Read the Percentage Calculator guide →

About Percentage Calculator

Percentage calculations appear in discounts, comparisons, reports and everyday budgeting. Choose the calculation type that matches your question, enter the values and verify the result context.

How to use Percentage Calculator

  1. To find a percentage of a number, fill What is this percentage? and Of which number?
  2. To find the change between two values, fill Starting value and New value.
  3. Choose Calculate and read the result.
  4. Check which value is the original and which is the new one.
  5. Confirm taxes, fees and rounding separately when the result is used for money.

Why the direction matters

A rise of 25 percent followed by a fall of 25 percent does not bring you back to the start, because each percentage uses a different starting value. It is also important to separate percent from percentage points: if an interest rate goes from 5 percent to 7 percent, it has risen by 2 percentage points but by 40 percent.

Frequently asked questions

How do I calculate a percentage of a number?

Multiply the number by the percentage and divide by 100. For example 15% of 200 is 200 x 15 / 100 = 30.

How do I calculate percentage increase?

Subtract the original value from the new value, divide by the original value and multiply by 100.

Is percentage change symmetric?

No. Increasing from one baseline to another and then reversing the comparison can produce different percentage changes.

How do I find a percentage of a number?

Multiply the number by the percentage and divide by 100. For 15 percent of 200 that is 30.

More Calculators tools

Want more detail, examples and answers to common questions? Read the Percentage Calculator guide.

About Percentage Calculator

Percentage calculations appear in discounts, comparisons, reports and everyday budgeting. Choose the calculation type that matches your question, enter the values and verify the result context.

How to use Percentage Calculator

  1. To find a percentage of a number, fill What is this percentage? and Of which number?
  2. To find the change between two values, fill Starting value and New value.
  3. Choose Calculate and read the result.
  4. Check which value is the original and which is the new one.
  5. Confirm taxes, fees and rounding separately when the result is used for money.

Why the direction matters

A rise of 25 percent followed by a fall of 25 percent does not bring you back to the start, because each percentage uses a different starting value. It is also important to separate percent from percentage points: if an interest rate goes from 5 percent to 7 percent, it has risen by 2 percentage points but by 40 percent.

Frequently asked questions

How do I calculate a percentage of a number?

Multiply the number by the percentage and divide by 100. For example 15% of 200 is 200 x 15 / 100 = 30.

How do I calculate percentage increase?

Subtract the original value from the new value, divide by the original value and multiply by 100.

Is percentage change symmetric?

No. Increasing from one baseline to another and then reversing the comparison can produce different percentage changes.

How do I find a percentage of a number?

Multiply the number by the percentage and divide by 100. For 15 percent of 200 that is 30.

More Calculators tools

Want more detail, examples and answers to common questions? Read the Percentage Calculator guide.