Percentage Calculator

Calculate percentages easily — find X% of Y, percentage increase/decrease, percentage difference and more with step-by-step solutions.

100% Free No Signup Instant Results

Percentage of a Value

What is% of?

Result

(20 / 100) × 150 = 30.00

Find the Percentage

is what % of?

Result

20%

(30 / 150) × 100 = 20.00%

Percentage Change

From (Old Value)

To (New Value)

Increase

20%

(|100 - 120| / 100) × 100

Everyday Uses of Percentage Calculators

Percentages are used everywhere in daily life — from figuring out discounts at a shopping mall, to calculating tips at a restaurant, to analyzing profit margins in business, or tracking your battery level. Our tool bundles 3 different percentage calculators into one page so you never have to remember the exact mathematical formula again.

How to use this Percentage Calculator?

Choose Operation

Select what you want to calculate: "X% of Y", "X is what % of Y", or Percentage increase/decrease.

Enter Values

Input your specific numbers directly into the calculator.

Get Results

View the accurate percentage calculation along with the step-by-step mathematical logic used to find it.

Frequently Asked Questions

A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, "%". For example, 45% is equal to 45 / 100, or 0.45.

To find out what percentage X is of Y, divide X by Y, and then multiply the result by 100. Formula: (X / Y) × 100.

To calculate percentage increase: 1. Find the difference (New Number - Original Number) 2. Divide by the Original Number 3. Multiply by 100. Formula: ((New - Old) / Old) × 100.

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