Decimal calculator
Decimal calculator lets you evaluate decimal arithmetic and parentheses precisely without eval in your browser.
Percentage calculator
Percentage calculator lets you calculate percentages, change rates, and original values with zero checks in your browser.
Percentage calculator
⌂ Inputs and results stay in this browser and are not automatically stored or sent.
Waiting for input
Input
Output
Waiting for input
Complete text result
How to use
Choose a share, percentage change, or reverse calculation and identify the baseline before entering values.
An increase from 80 to 100 differs from a decrease from 100 to 80. A zero baseline cannot define an ordinary percentage change; do not interpret an error as 0%.
Examples
80
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100Principles and limits
Each input is limited to 1,048,576 bytes, output to 33,554,432 bytes, and processing to 5,000 ms. Input is never silently truncated.
Guides
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