How Our Calculations Work

Time and breaks

Time is stored and calculated as whole minutes. For a shift, paid minutes equal the end time minus the start time minus an unpaid break.

When an end time is earlier than a start time, the shift is treated as ending the next day. Invalid overlapping periods or a break longer than a period are excluded rather than silently added.

Overtime

Weekly overtime begins above the selected weekly threshold, which defaults to 40 hours. Daily overtime can also be enabled after eight hours.

A minute can be overtime only once. When daily and weekly rules overlap, the result uses the larger overtime amount rather than counting the same minutes twice. Eligibility, state law, contracts and exemptions can change real payroll treatment.

Money and rounding

Money calculations use cents and round at the displayed result. Salary conversions use the work hours and workweeks shown in the tool.

Clock-rounding tools show mathematical rounding only. They do not decide whether an employer policy or use of rounded records is lawful.

Limits

HourlyKit provides transparent estimates, not payroll, tax, legal or financial advice. Confirm material decisions against your pay records, employer policy and applicable law.

Time and break rules

This calculation methodology uses paid minutes = end minus start minus unpaid break. Time is represented as whole minutes so a displayed decimal is derived from a consistent base.

For overnight work, an earlier end time moves to the next calendar day. A break longer than its period or overlapping work periods does not create a positive paid total.

Overtime and money rules

The calculation methodology applies daily and weekly overtime without counting the same minute twice. Where rules overlap, a minute is assigned to overtime once.

Money values use cents. Salary conversion depends on the entered hours and weeks. The methodology cannot determine exemption status, tax withholding, or an employer's final obligation.

Check the stated assumptions

Use the visible inputs, formula, and result as one record. Confirm the units before copying a value: minutes versus decimal hours, weekly versus biweekly time, annual versus paycheck pay, and gross versus after-deduction amounts. A calculator result is easier to review when the original input and the assumption behind it remain visible together.

Read calculation methodology as a practical estimate with a defined boundary. Check the displayed formula, use the linked tool for your own values, and compare material figures with actual records and current guidance. The source below provides general context where relevant; it does not replace an employer policy, tax record, contract, or individualized professional advice.

Reproduce a result independently

The calculation methodology is designed so a visitor can repeat the central arithmetic with a basic calculator. Convert each valid duration to minutes, subtract unpaid break minutes, add the accepted entries, apply the stated threshold, and format the final total. For money, multiply reviewed hours by the applicable rate and keep gross results separate from taxes or deductions.

When the result differs from another system, the calculation methodology suggests comparing inputs before comparing rounded outputs. Check the workweek boundary, overnight date, break treatment, daily rule, weekly threshold, multiplier, hours per week, and paid weeks. A difference in any one assumption can explain a different total without either arithmetic process being internally inconsistent.

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