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Number Rounding Calculator
Round numbers to decimal places or significant figures using different rounding methods
Enter any number (positive, negative, or decimal)
Rounds to nearest, .5 rounds up
Common Rounding Examples
| Number | Method | Decimals | Result | |
|---|---|---|---|---|
| 3.14159 | nearest | 2 | 3.14 | |
| 2.71828 | nearest | 3 | 2.718 | |
| 123.456 | nearest | 0 | 123 | |
| 99.999 | up | 1 | 100.0 | |
| 45.5 | bankers | 0 | 46 | |
| 44.5 | bankers | 0 | 44 |
Rounding History
No rounding history yet
Rounding Methods
Round Half Up
Rounds to nearest, .5 rounds up
Banker's Rounding
Rounds to nearest even number
Round Up
Always rounds away from zero
Round Down
Always rounds toward zero
Truncate
Simply removes extra digits
About Number Rounding
Rounding numbers is essential for presenting data clearly, reducing complexity, and meeting precision requirements in various fields.
Decimal Places: Fixed number of digits after decimal
Significant Figures: Meaningful digits in measurement
Different methods for different use cases
Handles positive, negative, and very small numbers
Common Applications:
Financial calculations and reporting
Scientific measurements and data analysis
Engineering calculations and specifications
Statistical analysis and data presentation