Calculate percentage, percentage change, percentage increase/decrease
Calculated Value
10
Original
Change
%
Toggle between finding X% of a number and adding a percentage increase to a number seamlessly.
The values update dynamically with every keystroke, allowing rapid math testing.
Displays a neat comparison of your original value and the percentage change for visual reference.
Everything runs inside your web browser. We never upload your text, files, or personal data to any servers.
No sign-ups, no subscriptions, and no usage limits. Get your results instantly in a single click.
Find % computes X% of Y (e.g., 10% of 100 = 10). Add % adds that percentage value to the base value (e.g., 10% added to 100 = 110).
Yes, you can enter fractional percentages (like 12.5%) and decimal base values for high-precision calculations.
To calculate a percentage decrease, you can subtract the result of the 'Find %' mode from your original number.
The formula used is: Result = (Percentage / 100) * Value.
No, all percentage calculations occur inside your own browser window. We do not log, store, or transmit your inputs.
Yes, completely. All calculations and file conversions happen entirely inside your own browser. We do not store, view, or upload any of your input data to our servers.
No. UtilsGo is 100% free. You don't need to create an account, register, or pay for any features.
Built by UtilsGo • Last updated May 2026 • No ads • No tracking