Percentage tools
Work with percentages without memorizing formulas.
Pick a mode and see the result and the formula side‑by‑side.
How to use
- Choose a calculator: **% of**, **increase/decrease**, or **difference**.
- Enter your numbers; results appear instantly with the formula.
- Flip inputs to check the reverse operation.
Tips & FAQs
• For multi‑step problems, solve one step at a time and verify with the reverse calculation.
• Use whole numbers when possible to reduce rounding noise.
How do you round results?
We keep internal precision and display a tidy number of decimals you can adjust in the UI.
Can I copy the formula?
Yes — each result shows the exact formula used.