Round to nearest multiple works exactly like Excel’s MROUND() function in most cases. However, Excel’s MROUND has a known floating-point inconsistency for certain decimal multiples.
The workaround in Excel is to nest ROUND() inside MROUND() like this: MROUND(ROUND(X, 2), 0.01). This calculator uses a precision-corrected version that avoids floating-point errors for all common decimal multiples.
Both the number and the multiple must have the same sign in MROUND. You cannot mix a positive number with a negative multiple. This calculator enforces that rule automatically.
Frequently Asked Questions
Divide your number by 5, round to the nearest whole number, then multiply by 5. For example: 17 ÷ 5 = 3.4, which rounds to 3, and 3 × 5 = 15. So 17 rounded to the nearest multiple of 5 is 15. The number 18 gives 18 ÷ 5 = 3.6, rounds to 4, and 4 × 5 = 20.
MROUND is an Excel function that rounds a number to the nearest specified multiple. The syntax is MROUND(number, multiple). For example, MROUND(76.225, 0.05) returns 76.25 and MROUND(17, 5) returns 15. Both arguments must be the same sign. Excel can produce inconsistent results for some decimal multiples due to floating-point precision; nesting ROUND() inside helps: MROUND(ROUND(X,2), 0.01).
Divide the dollar amount by 0.25, round to the nearest whole number, then multiply by 0.25. For $1.37: 1.37 ÷ 0.25 = 5.48, rounds to 5, and 5 × 0.25 = $1.25. For $1.63: 1.63 ÷ 0.25 = 6.52, rounds to 7, and 7 × 0.25 = $1.75.
Look at the ones digit. If it is 5 or greater, round up to the next multiple of 10. If it is 4 or less, round down to the current multiple of 10. Alternatively: divide by 10, round to the nearest whole number, then multiply by 10. For 46: 46 ÷ 10 = 4.6, rounds to 5, and 5 × 10 = 50.
Yes. You can round to the nearest multiple of any decimal value such as 0.05, 0.1, 0.25, or 0.5. The process is the same: divide by the multiple, round to the nearest integer, then multiply back. This calculator handles any positive multiple value you enter.
When your number is exactly halfway between two multiples, this calculator uses the round half away from zero rule. Positive halfway values round up to the larger multiple and negative halfway values round down to the more negative multiple. For example, 7.5 rounded to the nearest 5 gives 10 (rounds up away from zero).