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Timesheet Rounding Calculator (Nearest 15 Minutes)

Round clock-in and clock-out punches to the nearest 15 minutes (or 6, 10, 30) and see the rounded paid hours versus the exact hours worked.

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How it works

rounded punch = round(minutes-since-midnight ÷ interval) × interval · nearest uses the standard 7-minute rule for a 15-min interval · paid hours = (rounded-out − rounded-in) ÷ 60 · difference = rounded hours − exact hours

US payroll commonly rounds each punch to a set increment — usually the nearest quarter-hour, which gives the "7-minute rule": punches 1–7 minutes past a quarter round down, 8–14 round up. This tool rounds both the in and out punch to your chosen interval and method, then compares the rounded paid hours with the exact time worked so you can see who the rounding favors. Rounding to the nearest is legal in many places only because it evens out over time; always rounding down (never in the employee’s favor) generally is not.

Worked example

Clocking in at 8:07 and out at 4:52 is 8 hours 45 minutes exactly. Rounded to the nearest 15 minutes, 8:07 becomes 8:00 (7 minutes rounds down) and 4:52 becomes 4:45 (rounds down) — wait, 4:52 is 7 minutes past 4:45, so it rounds down to 4:45, giving 8 hours 45 minutes paid, the same as worked here. A 4:53 out-punch would instead round up to 5:00.

Frequently asked questions

What is the 7-minute rule?

For 15-minute rounding, a punch within the first 7 minutes after a quarter-hour rounds back to that quarter, and a punch 8 to 14 minutes past rounds up to the next quarter. It is just "round to the nearest 15 minutes" stated in plain terms.

Is timesheet rounding legal?

Rounding to the nearest increment is permitted in many jurisdictions provided it is neutral over time and does not systematically underpay. Always rounding down, or rounding only against employees, is generally not allowed. Rules differ by country and state, so check yours.

Why round at all?

Rounding predates digital time clocks and simplified manual payroll. With exact electronic punches it is largely unnecessary, and many employers now pay actual minutes to avoid disputes — which this tool also shows as the exact hours.

Related calculators

Educational only — timesheet rounding rules vary by jurisdiction. Confirm your pay against local labor law and employer policy.