Nearest five minutes
With minute-level punches, minutes 0–2 around a five-minute mark round down and minutes 3–4 round up to the next mark.
Free timecard review tool
See exactly what clock rounding changes.
Enter clock-in and clock-out intervals, choose a common rounding method, and compare exact worked time with rounded time across the whole sample. The result shows the arithmetic—not a legal compliance verdict.
Browser-only calculation. Clock punches, hourly rates, and calculated time differences are not sent to a PayStubCheck calculation endpoint.
Compare exact punches with rounded punches
Enter each paid-work interval separately. If an unpaid meal break has separate out/in punches, enter the pre-break and post-break work periods as separate intervals so each punch can be rounded independently.
Exact time vs rounded time
Net difference in this sample—
Rounded total minus exact punch total. Positive means the sample rounds upward overall; negative means it rounds downward overall.
Exact total—
Rounded total—
Rounding method—
Optional pay difference—
Intervals rounded up—
Intervals rounded down—
Intervals unchanged—
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| Interval | Exact punches | Exact time | Rounded punches | Rounded time | Difference |
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Interpret the sample conservatively
Federal guidance accepts certain rounding practices only when they do not result, over time, in failure to compensate employees properly for time actually worked. This calculator can expose the arithmetic pattern in the intervals you enter, but it cannot establish the long-term effect of a policy from one sample.
Browser-only valuesNo clock punch or pay amount is sent to a calculation API.
No compliance labelThe result never declares a policy lawful, unlawful, compliant, or noncompliant.
Per-punch transparencyEvery interval shows exact punches, rounded punches, and the resulting difference.
Federal rounding framework
How time-clock rounding works
Federal wage-and-hour guidance recognizes that time clocks do not always produce payroll records down to the exact minute. Under 29 CFR 785.48(b), practices that record time to the nearest five minutes, one-tenth of an hour, or quarter hour have historically been accepted when the arrangement does not, over time, result in failure to compensate employees properly for all time actually worked.
Calculator modelRounded clock-in = exact clock-in rounded to the selected interval
Rounded clock-out = exact clock-out rounded to the selected interval
Interval difference = rounded elapsed time − exact elapsed time
Sample difference = sum of all interval differences
Rounded clock-out = exact clock-out rounded to the selected interval
Interval difference = rounded elapsed time − exact elapsed time
Sample difference = sum of all interval differences
Why the cumulative sample matters
A rounding method can reduce time on one interval and add time on another. The federal principle is not that every individual punch must favor either side; the long-term practice must not leave employees uncompensated for time actually worked. That is why this tool totals all entered intervals rather than highlighting only one favorable or unfavorable punch.
Common increments
5-minute, tenth-hour, and quarter-hour rounding
The calculator focuses on the three common intervals expressly referenced in federal guidance. It does not assume that using one of these intervals automatically makes a particular policy acceptable.
Nearest tenth hour
One-tenth of an hour equals six minutes. This calculator therefore rounds each punch to the nearest six-minute boundary.
Nearest quarter hour
For minute-level punches, 1–7 minutes after a quarter-hour boundary round back, while 8–14 minutes round forward.
Official source context
The U.S. Department of Labor's Hours Worked Advisor explains that recording starting and stopping time to the nearest five minutes, one-tenth, or quarter hour can be acceptable when the arrangement averages out so employees are properly compensated for all time actually worked. DOL Fact Sheet #53 also illustrates quarter-hour rounding and warns that always rounding down can violate minimum-wage and overtime requirements.
Source review: August 30, 2026. Federal guidance is only one layer. State or local law, collective-bargaining agreements, employer policies, industry rules, and developments in applicable court decisions may affect how time must be recorded and paid.
Timecard audit workflow
How to review a rounding pattern responsibly
A one-day example can explain the mechanics, but a longer sample is more useful when you want to understand whether a rounding practice trends upward, downward, or stays close to neutral.
Use the calculator to
- compare exact and rounded elapsed time interval by interval;
- see whether the sample has a net upward, downward, or neutral difference;
- identify which intervals created the largest differences;
- estimate a simple pay difference using one entered hourly rate;
- print the arithmetic for payroll review or recordkeeping.
Do not use the result to assume
- that every minute between two punches was compensable work;
- that one unfavorable sample proves a legal violation;
- that one favorable sample proves a policy is compliant;
- that federal guidance overrides a stricter state or local rule;
- that the optional hourly-rate estimate accounts for overtime or premium pay.
Rounding and overtime
Why small time differences can matter near 40 hours
A few minutes of rounding may look immaterial in isolation, but accumulated time can affect the number of hours recorded in a workweek. When a worker is close to an overtime threshold, the time total and the applicable regular-rate calculation should be reviewed separately. This calculator intentionally stops at the time comparison; PayStubCheck's Weighted Overtime tool handles the federal regular-rate arithmetic for multiple rates and includable compensation.
Keep the calculations separate
First determine the time total you are reviewing. Then, if the weekly hours exceed 40 and federal overtime rules apply, use the appropriate regular rate and premium calculation. Combining time rounding, overtime classification, shift differentials, bonuses, and state daily-overtime rules into one automatic result would require assumptions this tool is designed to avoid.
Frequently asked questions
Time-card rounding calculator FAQ
These answers describe the calculation model and the limits of a single timecard comparison.
What is the “7-minute rule” for quarter-hour rounding?
It is a common shorthand for nearest-quarter-hour rounding at minute precision: punches 1–7 minutes after a quarter-hour boundary round back, while punches 8–14 minutes after the boundary round forward. The phrase is not a substitute for reviewing the full federal rule or any applicable state law.
Why is one-tenth of an hour six minutes?
An hour contains 60 minutes, so one-tenth of an hour is 6 minutes. The calculator rounds each punch to the nearest six-minute boundary when that option is selected.
Does the calculator round total daily hours or each punch?
Each clock-in and clock-out is rounded independently, then the rounded elapsed interval is calculated. That makes the individual effects visible instead of simply rounding an already-totaled number of hours.
How should I enter an unpaid lunch break?
If lunch has separate clock-out and clock-in punches, enter the pre-lunch work period and post-lunch work period as two separate intervals. That lets all four punches participate in the comparison rather than subtracting an assumed break amount.
Can I enter an overnight shift?
Yes. When clock-out is earlier than or equal to clock-in, the calculator treats clock-out as the following day. Each interval is limited to 24 hours.
Does a negative net difference mean the employer violated the FLSA?
No. It means the entered sample contains less rounded time than exact punch time. Federal guidance focuses on whether a rounding practice results over time in employees not being properly compensated for all time actually worked. Other facts and laws can also matter.
Does the pay-impact estimate calculate overtime?
No. It multiplies the sample's net minute difference by one hourly rate that you enter. It is a simple arithmetic illustration and intentionally excludes overtime premiums, shift differentials, bonuses, minimum-wage analysis, and other pay rules.
Are my punches stored?
No. The calculation runs in your browser. Clock-in times, clock-out times, hourly rates, and calculated differences are not sent to a PayStubCheck calculation endpoint or stored in browser storage.