Percentage Calculator - Calculate Percentages Easily Online

Free percentage calculator. Find X% of Y, calculate percentage increase/decrease, and solve percentage problems instantly. No signup required.

Decimal Places:

What is X% of Y?

% of

Result: -

Formula:

X is what % of Y?

is what % of

Result: -

Formula:

Percentage Change

From to

Change: -

Formula:

Increase X by Y%

+ %

Result: -

Formula:

Decrease X by Y%

- %

Result: -

Formula:

X% of what is Y?

% of ? =

Result: -

Formula:

Age Calculator - Calculate Exact Age in …

DPI Calculator - Image Resolution & Prin…

Aspect Ratio Calculator - Find Image & V…

Tip Calculator - Calculate Tips and Spli…

Salary to Hourly Calculator - Convert An…

View all General calculators →

Frequently Asked Questions

Divide X by Y and multiply by 100. Our calculator does this automatically - just enter both numbers.

Enter the original value and new value. The formula is: ((New - Original) / Original) × 100.

15% of 200 is 30. Use our 'X% of Y' calculator to find any percentage of any number.

Same as percentage increase: ((New - Old) / Old) × 100. The result will be negative. A drop from 100 to 80 is -20%.

Percentage points are absolute differences. If interest rises from 5% to 8%, that's 3 percentage points but a 60% increase (3/5 × 100).

If something increased by X%, divide by (1 + X/100) to get the original. For a 25% increase to $125, original = 125/1.25 = $100.

Yes! A value doubling is a 100% increase. Tripling is 200% increase. In 'X is what % of Y', if X > Y, the result exceeds 100%.

You cannot simply add them. A 10% increase followed by 10% increase is not 20%. It's 1.1 × 1.1 = 1.21 = 21% total increase (compounding).

Original = Final / (1 + Tax%). For $120 with 20% tax included: $120 / 1.20 = $100 original price.

Use 'X is what % of Y'. If your bill is $50 and you paid $60 total, the tip is $10, which is (10/50) × 100 = 20%.

What is X% of Y?

X is what % of Y?

Percentage Change

Increase X by Y%

Decrease X by Y%

X% of what is Y?

Related Tools