Percentage Calculator

Calculate percentages for various scenarios quickly and accurately.

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Client-Side Processing: All calculations are performed directly in your browser. No data is sent to our servers, ensuring your privacy.

What is X% of Y?

X (Percentage)

Y (Total Value)

X is What % of Y?

X (Part Value)

Y (Total Value)

% Change (X to Y)

X (Original Value)

Y (New Value)

About Percentage Calculations

Percentages are a fundamental part of mathematics used to express a proportion of a whole. Our Percentage Calculator simplifies common percentage problems encountered in daily life, finance, statistics, and more.

Key Percentage Scenarios:

What is X% of Y?: Used to find a part when given a percentage and the total. (e.g., Calculating discount amount, tax, or a specific portion.)
X is What % of Y?: Used to determine what percentage one number is of another. (e.g., Finding test scores, success rates, or market share.)
Percentage Increase/Decrease (Change): Used to calculate the percentage change between an original value and a new value. (e.g., Analyzing growth, inflation, or depreciation.)

This Percentage Calculator performs all calculations locally within your web browser. No data you enter is ever transmitted to our servers or stored in any way. Your privacy and data security are our top priority.