Percentage calculator

ES: 1.234,5; EN: 1,234.5. Scientific notation and signed values are accepted. Use a negative adjustment percentage to decrease. Change uses the signed previous value as the denominator; zero is undefined.

Up to 64 characters per number; absolute input and result values up to 10¹². Approximate floating point calculation. Round to nearest, ties away from zero; a very small value may display as 0.

Free, no account, and no content uploads or storage. Runs on your device.