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Hours & Pay Calculators and Guides

Use the tools to check your own hours or prepare payroll inputs. Every result shows the underlying math and keeps your entries in your browser.

Start with time before estimating money

First reconcile clock entries, breaks and overnight shifts. Convert minutes only after the duration is correct. Then choose between the simple one-rate pay estimate and a differential calculation. Mixing a decimal-hour mistake with a pay-rate mistake makes the final discrepancy harder to diagnose.

Use these guides as an audit trail

Keep the original entries and document the assumptions next to your result. The timecard, decimal-time and break guides address separate steps in the same workflow. For employment decisions, consult the linked official guidance and applicable local rules.

Frequently asked questions

How do I calculate hours worked with a lunch break?

Subtract clock-in from clock-out, then subtract the genuinely unpaid break. A 09:00–17:30 shift with 30 unpaid minutes is 8 worked hours. Do not deduct a break merely because it is called lunch; verify how it was actually taken and recorded.

What is a 10% shift differential at $20 an hour?

Ten percent of $20 is $2 extra per eligible hour. Twelve eligible hours add $24 in straight-time premium earnings. The percentage applies to the entered base rate.

Are the start and end dates counted?

Yes. A one-day range returns one workday when that date is a selected weekday and is not excluded. To count only days after the start, enter the following date as your start.

What is 7 hours 45 minutes in decimal hours?

7 + 45 ÷ 60 = 7.75 hours. It is not 7.45 hours.

Timesheet Rounding Checker and Bulk Time Converter

Paste up to 500 durations, convert H:MM or decimal hours, and compare rounding each row with rounding the total once.

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Tools and guides in this topic

Work Hours Calculator

Calculate hours worked across a full week, including unpaid breaks, overnight shifts, overtime, decimal hours and estimated gross pay.

Shift Differential Calculator

Compare flat-dollar and percentage shift premiums and estimate weekly, monthly and annual gross pay.

Business Days & Work Hours Calculator

Calculate business days and planned work hours between two dates. Choose working weekdays, exclude your own holiday dates and download a CSV.

Decimal Hours Calculator & Bulk Timesheet Converter

Convert up to 500 work-time rows between hours:minutes and decimal hours, total unrounded values, and export a checked CSV.

How to Calculate Work Hours Correctly

A practical guide to calculating worked time, subtracting breaks, handling overnight shifts and converting minutes to decimal hours.

Shift Differential Pay: Formula and Examples

Calculate flat and percentage shift premiums and understand how eligible hours affect estimated gross pay.

Decimal Hours Conversion Chart and Payroll Examples

Convert work hours and minutes to payroll decimals with formulas, a conversion chart, reverse checks and answers for 0.10, 0.50 and 0.80 hours.

How to Calculate an Overnight Shift

When clock-out is earlier than clock-in, add 24 hours to the ending time before subtracting the start and unpaid breaks.

Subtracting Unpaid Breaks from a Timecard

Deduct time that is genuinely unpaid under the applicable rules and policy. Do not automatically subtract every break from a shift.

How to Count Working Days Between Two Dates

Count dates on your working weekdays, remove actual closures, and decide whether both endpoints belong in the range before multiplying by daily hours.

Turn Working Days into a Monthly Capacity Budget

Multiply working days by scheduled paid hours, then subtract separately identified unavailable time. Keep scheduled capacity distinct from productive capacity.

Why Decimal Hours Totals Differ After Rounding

Rounding each timesheet row can produce a different total from adding the original durations and rounding once. Compare the two methods before investigating missing time.

Check a Decimal-Time CSV Before a Payroll Import

Confirm the expected unit, decimal separator, row rounding and treatment of overtime before importing a converted time column.

Convert Minutes and Excel Times to Decimal Hours

Divide a number of minutes by 60. For an Excel cell containing a genuine time duration stored as a fraction of a day, multiply its value by 24.

Convert a Timesheet Column to Decimal Hours Without Losing the Total

Choose one input format, preserve the original durations, and export both row conversions and a reconciled total. This workflow works with a copied column of elapsed times.

Timesheet Rounding Checker and Bulk Time Converter

Paste up to 500 durations, convert H:MM or decimal hours, and compare rounding each row with rounding the total once.

Monthly Work Hours Calculator with Closures and CSV

Calculate scheduled work hours for a calendar month using your working weekdays, daily hours and closure dates. Export the daily breakdown.

Monthly Work Hours: Actual Calendar vs. 173.33-Hour Average

Understand why a month can contain 160, 168, 176 or 184 scheduled hours and when an annual monthly average answers a different question.

Seconds to Decimal Hours: Formula, Examples and Accuracy Checks

Convert seconds to decimal hours with a simple formula, worked examples, rounding checks and guidance for checking duration totals.

Convert HH:MM:SS Durations to Decimal Hours

Convert HH:MM:SS durations to decimal hours, including seconds, totals over 24 hours, input validation and common conversion mistakes.

Seven Common Timesheet Errors and How to Catch Them

Catch seven timesheet errors involving decimal hours, overnight shifts, break deductions, duplicate rows, rounding and missing information.

12-Hour vs 24-Hour Time: A Practical Conversion Guide

Convert AM and PM to 24-hour time and back. Understand noon, midnight, overnight dates and the difference between clock times and durations.

How to Add and Subtract Time Durations by Hand

Add and subtract hours, minutes and seconds by hand. Follow worked examples for durations, breaks, overnight intervals and weekly totals.