Percentage Calculator Online Free

BotixTech's free percentage calculator answers the three questions everyone asks: what is X percent of a number, what percentage one number is of another, and how much something increased or decreased in percent.

No formulas to remember. Type two numbers, pick the calculation, and get the answer instantly. Our percent calculator online tool is free with no signup.

How to Calculate Percentage

Pick the calculation - percent of a number, one number as percent of another, or percent change.
Enter your numbers - the values update live as you type.
Read the answer - shown instantly with the formula used.

Percentage Calculator Features

Three modes - X% of Y, X as % of Y, and percent increase/decrease.
Live results - answers update as you type.
Shows the formula - so you learn, not just get answers.
Free - no signup needed.

Frequently Asked Questions

How do I find 20 percent of 150?

Select 'X% of Y', enter 20 and 150. The answer is 30. The formula is (20/100) x 150.

How do I find what percent 30 is of 150?

Select 'X is what % of Y', enter 30 and 150. The answer is 20%.

How do I calculate percentage increase?

Select 'percent change', enter the old and new values. Going from 100 to 125 is a 25% increase.

What is the percentage formula?

The basic formula is (part / whole) x 100. Our calculator applies it automatically in all three modes.

Percentage Calculator