Round numbers to any decimal place, significant figures, or nearest multiple. Supports standard, floor, ceiling, and banker's rounding.
| Method | Result |
|---|
| Method | Rule | Example (2.345) |
|---|---|---|
| Standard (half-up) | If .5 or above, round up | 2.35 |
| Floor | Always round down | 2.34 |
| Ceiling | Always round up | 2.35 |
| Truncate | Drop extra digits | 2.34 |
| Banker's (half-even) | Round .5 to nearest even | 2.34 (4 is even) |
Significant figures represent the meaningful digits in a measurement. All non-zero digits are significant; zeros between non-zero digits are significant; trailing zeros after decimal point are significant.