FREE ONLINE CALCULATOR

Percentage Calculator

Calculate percentages, percentage changes and percentage differences quickly and easily.

What is X% of Y?

Find a percentage of a number.

Percentage (%)

Number

—

Enter values above

X is what % of Y?

Find what percentage one number represents of another.

Value (X)

Total (Y)

—

Enter values above

Percentage Increase

Calculate the percentage increase from an original value to a new value.

Original Value

New Value

—

Enter values above

Percentage Decrease

Calculate the percentage decrease from an original value to a new value.

Original Value

New Value

—

Enter values above

Privacy: All calculations are performed directly in your browser. No values are uploaded to a DebTech server.

How to Use the Percentage Calculator

1. Choose a Calculation
Select the percentage calculation you need.

2. Enter Values
Enter the numbers into the appropriate fields.

3. Calculate
Click Calculate to instantly see the result.

Percentage Calculator Online

DebTech's Percentage Calculator provides several common percentage calculations in one simple tool. It can be used for discounts, price changes, marks, statistics, business calculations and everyday math.

Percentage Formulas

Percentage of a number: (Percentage ÷ 100) × Number
What percentage is X of Y: (X ÷ Y) × 100
Percentage increase: ((New − Original) ÷ Original) × 100
Percentage decrease: ((Original − New) ÷ Original) × 100

Frequently Asked Questions

Is this Percentage Calculator free?

Yes. DebTech's Percentage Calculator is a free online tool.

Are my calculations uploaded?

No. The calculations happen locally in your browser.

Can I use it on mobile?

Yes. The calculator is responsive and works on phones, tablets and desktop computers.