Enter hours and minutes and the tool rounds the same time to 1, 6, 15 and 30-minute units plus a unit of your own, laying out the rounded time, the decimal hours and the difference from the original in a single table. When a timesheet has to be filed in decimal hours and each employer uses a different rounding unit, this shows in advance how far the figures drift apart.
Every step works from the total minutes as an integer, so repeated rounding never inflates the value, and the round-up direction carries a tolerance so a value that already sits exactly on the unit is not lifted a step further. Decimal hours appear to four places before rounding and two places per unit, with the precision stated in the labels. Written as of October 2026.
No verdict is given on which rounding unit is correct. Units and directions are set by employer policy or contract and no single official standard exists for them. Pay amounts and hourly rate conversions are not calculated, and a single two-way conversion of one value is not covered.
Frequently Asked Questions
Six minutes is a tenth of an hour, so decimal hours land neatly on 0.1 steps. It is common where work is billed by the hour, and it stays closer to the original time than a 15 or 30-minute unit does.
Half up lifts the value when more than half a unit is left and drops it otherwise, sending an exact half upward. Rounding up adds a full unit whenever even one minute is left over, while rounding down simply drops anything below the unit. The direction you pick is printed with the result.
A single two-way conversion of one value is not covered here. This tool rounds the same time to 1, 6, 15 and 30-minute units plus a unit of your own and compares how far apart the results sit.