g3n-data
Support繁中
← All tools

Percentage Calculator

Calculate a percentage of a value, part/whole percentage, percentage change, increase or decrease with explicit finite-number checks.

percentage-calculatorLOCAL WORKSPACE

Enabling local controls…

Each field: 1 MiB UTF-8 (SQL: 100,000 characters); output: 2 MiB. Loading stops after 15 seconds; processing after 2 seconds. Local processing, without uploads or storage.

Uses JavaScript floating point, not financial decimal arithmetic. Change is (to - from) / from; a signed starting value affects interpretation.

Enter input or load a sample, then run.

If clipboard access is denied, select the read-only output manually.

How to use this tool

Choose one of five modes, enter both numbers and calculate. Blank fields and zero denominators are rejected.

When not to use it

Uses JavaScript floating-point arithmetic, not financial decimal arithmetic. Change is (to - from) / from; a signed starting value affects interpretation.