Why rounding is not automatically a problem
Rounding punches to the nearest 5, 6, 10 or 15 minutes is explicitly allowed under federal law (29 CFR §785.48). The idea is administrative convenience — nobody wants to run payroll to the exact second. But there is one condition that makes the whole thing legal: it has to average out over time. Sometimes it rounds in your favor, sometimes in your employer's, and over weeks and months it should land close to zero either way.
What is not legal is a rounding policy that, in practice, consistently shorts employees — for example, always rounding a clock-in forward and a clock-out backward, so every single punch trims paid time. That pattern fails the legal test even if each individual round only costs a few minutes.
How to use this. Enter your actual clock in and out times for a handful of real days, pick the rounding rule your employer uses (check your handbook or ask HR if you are not sure), and watch which way the "Net effect" number leans. One day proves nothing. A pattern across two or three weeks is what actually matters.
The most common rounding rules
| Rule | Rounds to | Also called |
|---|---|---|
| Quarter hour | Nearest 15 minutes | The "7-minute rule" — 1–7 min rounds down, 8–14 rounds up |
| Tenth of an hour | Nearest 6 minutes | Common in payroll systems that bill in decimal tenths |
| Half hour | Nearest 30 minutes | Less common for individual punches; more often used on daily totals |
| None | Exact time | What you actually worked, unrounded |
A worked example
You clock in at 8:58 AM and out at 5:03 PM — 8 hours 5 minutes worked. Under quarter-hour rounding, 8:58 rounds forward to 9:00 (2 minutes lost) and 5:03 rounds back to 5:00 (3 minutes lost). Your paid time is 8 hours flat: 5 minutes less than you actually worked, on that one day.
On its own, that is not illegal — the same punch pattern on a different day could just as easily round in your favor. What matters is whether, added up over a real stretch of time, days like this one are the only kind you ever see.
What a genuine pattern looks like
- Roughly balanced. Some days round up, some round down, and the net comes out close to zero over a couple of weeks. This is what a lawful, neutral policy looks like.
- Consistently against you. Nearly every day rounds your clock-in later and your clock-out earlier — both edges always trimming in the same direction. This is the pattern the law does not permit.
- Consistently in your favor. Also possible, and also fine — an employer is allowed to round generously. It is only the systematic-loss direction that is a problem.
What to do if the pattern looks wrong
Keep your own independent log of actual punch times for a few weeks — the time clock on this site does that automatically. Compare it against your pay stub. If the shortfall is real and consistent, raise it with payroll or HR first; a rounding policy is sometimes applied incorrectly by mistake rather than by design. If it continues, your state labor department or the federal Wage and Hour Division can take a complaint.
This calculator estimates the effect of rounding on the hours you enter. It is not legal advice, and it cannot see your employer's actual policy or your full pay history — treat a pattern here as a reason to look closer, not as a final answer.
Rounding versus overtime
Rounding is applied per punch, before overtime is worked out — not the other way around. If you want to see what your rounded hours are worth including overtime, take the rounded total shown here into the overtime calculator or the full time card calculator, which applies rounding and overtime together automatically.
Common questions
Is it legal for my employer to round my time?
Yes, rounding to the nearest 5, 6, 10 or 15 minutes is explicitly permitted under federal law, as long as the rounding is neutral over time and does not consistently work out to your employer’s advantage.
What is the 7-minute rule?
It is the common name for quarter-hour rounding: within each 15-minute block, 1 to 7 minutes rounds down to the start of the block and 8 to 14 minutes rounds up to the next one. This calculator’s "Quarter hour" option applies it automatically.
How do I know if my employer’s rounding is unfair?
Track your actual punch times for a couple of weeks and compare the total against your rounded, paid hours. If the difference consistently goes the same direction — always costing you time, never in your favor — that pattern is the sign to look into, not a single short day.
Does rounding apply before or after overtime is calculated?
Rounding is applied to each punch first, and overtime is calculated on the resulting rounded total. This calculator shows you that rounded total; feed it into the overtime calculator if you want the pay worked out too.
What rounding interval does my employer probably use?
Quarter hour (nearest 15 minutes) is by far the most common. Check your employee handbook or timekeeping system, or ask HR directly — there is no way to tell just by looking at your pay stub.
Can rounding ever help me?
Yes. Rounding is symmetric by design — a punch a few minutes early or late can round in either direction. Employers are allowed to round generously; the legal issue only arises when the pattern consistently goes against employees.
What if I only have one or two days to check?
That is not enough to tell you anything reliable. A single day rounding against you happens under a perfectly legal, neutral policy too. Track at least a couple of weeks before drawing a conclusion.