Requirements
JavaScript must be enabled in your browser for the calculator to work. (Don't worry—it's usually enabled by default!)
Navigating Fields
Mouse Users
Simply click into any field to start typing.
Keyboard Navigation
- Tab ↹ Jump to the next field
- Shift + Tab ↹ Return to the previous field
Calculate Like a Pro
Mouse Method
Click the "Calculate" button.
Keyboard Shortcut
Press Enter (because who has time to lift their hands?)
Results & Errors
✓ Success
Your answer pops up instantly in the result field. 🎉
× Error
If a field turns red, check your input—it's a gentle nudge to fix typos or missing numbers.
Number Formatting Tips
Decimal Separators
Use a dot (.) or comma (,)—we're flexible!
Example: $25.99 or 25,99 both work.
Thousands Separators
Avoid commas or dots for thousands (like 1,000 or 2.500). Why? We'll mistake them for decimals!
✓ Correct: 1000 or 2500
× Incorrect: 1,000 or 2.500
Need more help? Our support team's just a click away.
PercentFlow is here to make math feel like magic! ✨