Compatible Numbers Calculator
Estimate the best compatible numbers for your arithmetic operations using our compatible numbers calculator.
Rounded3,000to the nearest 1,000
Rounded down (floor)3,000
Rounded up (ceiling)4,000
Truncated3,000digits simply dropped
Difference from the original-456.789
At every place value
| Nearest | Result |
|---|---|
| 0.01 | 3,456.79 |
| 0.1 | 3,456.8 |
| 1 | 3,457 |
| 10 | 3,460 |
| 100 | 3,500 |
| 1000 | 3,000 |
The method
round to the nearest multiple of the chosen place
Rounding, flooring and truncating differ
Rounding goes to whichever multiple is closer. Floor always goes down and ceiling always goes up — including for negatives, where floor(−2.3) is −3, not −2. Truncating just discards digits, so it rounds towards zero and behaves differently from floor on negative numbers.