Percentage Calculator

Solve common percentage questions quickly with three practical calculator modes.

Tool

Choose a mode, enter X and Y, and the result updates instantly.

Supported modes cover percent-of, percent-ratio, and increase calculations.

All formulas are deterministic and run locally in your browser.

Find 15% of 240 for discounts or commissions.

Calculate what percent 45 is of 60 for score summaries.

Which formulas are included?

X% of Y, X is what % of Y, and increase Y by X%.

Can I use decimals?

Yes. Decimal values are supported for both X and Y.

Writing

Paste text to instantly calculate word count, character count, and estimated reading time.

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Productivity

Find overlapping working hours between two timezones and see the range for both people.

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Finance

Get a deterministic repair or replace recommendation with confidence and clear reasoning.

Open Repair vs Replace Calculator