Rounding tool
Minutes to Tenths of an Hour
One tenth of an hour is 6 minutes. Convert minutes to the nearest tenth and see the rounding ranges.
- One tenth6 minutes
- ChartRounding ranges
- Ties3, 9, 15 min…
Tenths of an hour
0.4
22 ÷ 60 = 0.3667 → nearest tenth = 0.4 hours
Tenths of an hour chart
Slide through the minutes; the dial shows the tenth they round to and the table row lights up.
| Tenth | Exact minutes | Minutes that round to it |
|---|---|---|
| 0.0 | 0 min | 0 to 2 min |
| 0.1 | 6 min | 3 to 8 min |
| 0.2 | 12 min | 9 to 14 min |
| 0.3 | 18 min | 15 to 20 min |
| 0.4 | 24 min | 21 to 26 min |
| 0.5 | 30 min | 27 to 32 min |
| 0.6 | 36 min | 33 to 38 min |
| 0.7 | 42 min | 39 to 44 min |
| 0.8 | 48 min | 45 to 50 min |
| 0.9 | 54 min | 51 to 56 min |
| 1.0 | 60 min | 57 to 60 min |
What a tenth of an hour is
Tenths: 10 cells of 6 minutes
Hundredths: 100 cells of 36 seconds
22 min → nearest tenth 0.4 (24 min) · nearest hundredth 0.37 (22.2 min)
Dividing 60 minutes into ten parts gives 6 minutes each, so 0.1 hour is 6 minutes, 0.4 hour is 24 minutes and four tenths of an hour is the same 24 minutes said another way. Tenths are a coarser scale than the hundredths used on most timesheets: a hundredth is 36 seconds, a tenth is 6 minutes.
Systems that record in tenths are applying rounding, and the federal wage-hour regulation on time clocks lists recording to “the nearest one-tenth or quarter of an hour” among long-standing practices (29 CFR 785.48). The payroll time clock conversion page compares tenth-hour and quarter-hour rounding side by side.
The halfway minutes
Orange dashed ticks are the halfway minutes. Enter one of them above to see the two possible answers.
Because a tenth is 6 minutes, every third minute sits exactly halfway between two tenths: 3 minutes is 0.05, 9 minutes is 0.15, 15 minutes is 0.25 and so on. The chart above rounds those up, so 3 minutes becomes 0.1 and 15 minutes becomes 0.3. A system that rounds halves down would record 0.0 and 0.2 instead, which is why two tenth-hour timesheets can disagree on exactly those minutes and nowhere else.