Percentage Calculator

Academic & Education

Calculate percent values, percentage increase/decrease, and ratios in real time.

Academic & Education
100% Client-Side: Runs in browser
Zero Uploads•Free Forever ($0)•No Registration

Percentage Calculator

Solve percentage of, proportion, or percentage increase/decrease.

What is% of?
30.00

Calculation: (20 ÷ 100) × 150 = 30.00

How to Use Percentage Calculator

Follow these simple steps to use this free browser-based tool:

1

Choose Calculation Mode

Select standard percentage, percentage change, or percentage proportion.

2

Enter Values

Input your numbers into the designated fields.

3

Inspect Result

View the calculated percentage along with the formula used.

Key Features & Benefits

Calculate 'What is X% of Y?' instantly
Calculate percentage increase or decrease between two values
Calculate 'X is what percent of Y?'
Shows step-by-step mathematical formulas

Frequently Asked Questions

How do you calculate percentage increase?

Subtract the original value from the new value, divide by the original value, and multiply by 100: ((New - Old) / Old) * 100.

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