Clock and hours · rules read October 11, 2026
Payroll hours from daily totals
Enter each day as hours and minutes, choose how payroll writes the hours, and get the decimal total and the minutes rounding added or removed.
Written by Radif Partners · How the hours are counted · Editorial policy
Decimal hours for payroll
40.16
40.1667 h exactly · difference -0.4 min
| Mon | 8.25 |
| Tue | 7.83 |
| Wed | 8.08 |
| Thu | 9.33 |
| Fri | 6.67 |
| Sat | 0.00 |
| Sun | 0.00 |
Rounding a daily total is a payroll convention, not a rule; over time it must not shortchange the worker (29 CFR 785.48). How this is calculated.
Payroll enters hours as decimals, so each daily total in hours and minutes has to be divided by 60 and written in the precision the payroll system uses: hundredths of an hour, tenths (6-minute steps) or quarters (15-minute steps). A week of 8:15, 7:50, 8:05, 9:20 and 6:40 is exactly 40.1667 hours. In hundredths it becomes 40.16, in tenths 40.20 and in quarters 40.00, so the three conventions differ by 12 minutes on the same week, $4.40 at $22 an hour. Rounding to the nearest 5 minutes, tenth or quarter is accepted by federal rules only if it averages out and does not, over time, fail to pay for the time actually worked (29 CFR 785.48(b)). Hundredths avoid the question, being accurate to well under a minute. The calculator shows each day in the chosen format, the weekly total, the difference from the exact time and the straight-time pay.
Hundredths, tenths or quarters
Hundredths (exact to the minute)
8.37
| Tenths (6-minute steps) | 8.4 (+2 min) |
| Quarters (15-minute steps) | 8.25 (-7 min) |
One week in the three payroll formats
The table takes the five daily totals from the summary and writes them the way three common payroll setups would. Hundredths are the exact minutes divided by 60, kept to two decimals. Tenths snap each day to the nearest 6 minutes and quarters to the nearest 15, the increments the federal rounding regulation names.
| Day | h:mm | Hundredths | Tenths (6 min) | Quarters (15 min) |
|---|---|---|---|---|
| Monday | 8:15 | 8.25 | 8.3 | 8.25 |
| Tuesday | 7:50 | 7.83 | 7.8 | 7.75 |
| Wednesday | 8:05 | 8.08 | 8.1 | 8.00 |
| Thursday | 9:20 | 9.33 | 9.3 | 9.25 |
| Friday | 6:40 | 6.67 | 6.7 | 6.75 |
| Week | 40:10 | 40.16 | 40.2 | 40.00 |
| Difference from exact | -0.4 min | 2 min | -10 min |
On this particular week, tenths land 2 minutes above the exact figure and quarters 10 minutes below it, which happens to erase the 10 minutes worked past 40 hours. Change the minutes and the order flips. That is the logic behind accepting rounding at all: the small gains and losses are supposed to cancel over many days and many workers. The regulation does not promise that any given week comes out even, and it does not allow a method that leans one way week after week.
When rounding stops averaging out
Take a production worker who reliably finishes two minutes after the eighth hour because the line takes that long to shut down. Each day is 8:02. Tenth-of-an-hour rounding turns it into 8.0 every single time. The week is 40.17 hours on the clock but 40 on the payroll, and the minutes beyond 40 that should have been paid at 1.5 times the rate vanish. Nobody chose to underpay; the pattern of the work and the rounding rule combined to do it.
The fix is simple. Either use hundredths, which record 8:02 as 8.03, or look at the totals over a quarter: if rounded hours are consistently below the exact ones, the method is not neutral for that group of workers. The hours-worked rules make all time on duty compensable, and rounding is only a convenience on top of that rule, not an exception to it.
Round each day, or only the week?
Two payroll habits produce slightly different totals from the same time cards. Some systems convert and round every day, then add the rounded days; others add the exact minutes of the whole week and convert once. The second method carries no accumulated drift: the week above is 40:10 on the clock, which becomes 40.17 hours in one step. Rounding seven separate days, by contrast, can add or remove a few minutes even in hundredths, and a lot more in quarters.
If you key hours into a payroll service by hand, ask which method it expects and stick to it for every employee. Mixing them from one pay period to the next makes comparisons with past stubs meaningless and makes it hard to check that the rounding really balances over time, the one condition the regulation attaches to it.
From the decimal total to the paycheck
Once the hours are in decimal form, payroll multiplies them by the regular rate and splits off anything past 40 in the workweek as overtime under the FLSA. At $22 an hour, the hundredths total above pays $883.52 at straight time. The calculator shows that figure when you enter a rate; for overtime, the overtime calculator takes the same daily totals and applies the federal or state rule. If you have clock times instead of daily totals, start with the two-week timesheet or the time clock calculator, and see the hours and minutes converter for single values.