Timesheet Calculator

Timesheet Calculator Guide

Timesheet Calculator helps you total a week of work shifts, lunch breaks, regular hours, overtime hours, decimal hours, and estimated pay in one place. It is useful when you need a weekly payroll summary, a freelance billing record, a staff review sheet, or a quick check before submitting hours to an employer.

A timesheet calculator is built for a pay period, not just one shift. It helps you see whether the week is complete, whether any day is missing a break, and whether total hours are close to an overtime threshold. That makes it especially useful when you work a variable schedule.

How to use the Timesheet Calculator

Use the timesheet calculator when you want a weekly or pay-period view. Enter one row for each workday or shift, then add unpaid break minutes. If you want payroll estimates, include the hourly rate and overtime settings before calculating.

1. Choose or confirm the week or pay-period dates.
2. Enter each workday with start time and end time.
3. Add unpaid lunch or break minutes for each row.
4. Set hourly rate, overtime threshold, and overtime multiplier if pay estimates are needed.
5. Calculate and review daily totals, weekly totals, decimal hours, regular hours, overtime, and estimated pay.
6. Copy, print, or download the timesheet summary for review.

Before saving the result, scan the week like a payroll reviewer would. Check that every working day is present, every break is entered, overnight shifts are handled correctly, and no row belongs to a different pay period.

Formula and assumptions

The timesheet calculator totals each shift first, then adds the shift totals into a weekly or pay-period total. Break minutes are treated as unpaid unless your workplace policy says otherwise.

Daily paid time = end time - start time - unpaid break time

Weekly total hours = sum of daily paid time

Decimal hours = hours + minutes / 60

Overtime hours = weekly total hours - overtime threshold

Estimated pay = regular pay + overtime pay

The calculator assumes the times you enter belong to the same timesheet period. If you are preparing a monthly record, run each week or pay period separately so the totals stay easy to audit.

Example weekly timesheet calculation

Suppose you worked five shifts in one week. Four days were 8 paid hours each, and Friday was 9 hours and 30 minutes after lunch. The weekly total is 41 hours and 30 minutes, which is 41.50 decimal hours.

If the overtime threshold is 40 hours, the week has 40 regular hours and 1.50 overtime hours. If your hourly rate is 20 and overtime is 1.5x, estimated regular pay is 800 and estimated overtime pay is 45.

How to read the result

The result should make the weekly pattern easy to understand. Daily totals help you spot missing rows. Weekly total hours show the full time worked. Decimal hours show the payroll-friendly version. Regular and overtime totals show how the calculator split the time according to your settings.

If the timesheet calculator result looks wrong, review the row-level entries before changing the formula. Most errors come from missing breaks, AM/PM mistakes, duplicate rows, or rows entered under the wrong week.

Payroll and approval checks

A timesheet calculator is a review tool, not a legal payroll decision-maker. In the United States, the Department of Labor explains that covered nonexempt workers generally receive overtime after 40 hours in a workweek at not less than one and one-half times the regular rate. For official context, review the Fair Labor Standards Act overview and the DOL overtime fact sheet.

For official payroll approval, also check employer policy, local rules, paid leave, holidays, rounding, shift premiums, and any contract terms. If you manage a team, use the calculator result as a pre-check before the final payroll system entry.

If you are self-employed or billing a client, the timesheet calculator can also help you create a clearer work record before sending an invoice. Keep the exported summary with your project notes, especially when a week includes split shifts, late starts, early finishes, or extra hours. A clean weekly record is easier to explain than a loose list of start and end times.

For employees, the same review habit can prevent small submission mistakes. Before you send hours for approval, compare the calculator total with your own calendar, shift messages, or attendance system. If the totals do not match, review the day with the largest difference first. One missing break or duplicated row can change the entire weekly total.

Common mistakes to avoid

• Do not leave unpaid break fields blank if breaks should be deducted.
• Do not combine two pay periods in one weekly summary.
• Do not assume 30 minutes equals 0.30 hours. It equals 0.50 hours.
• Do not ignore overnight shifts or split shifts.
• Do not forget to review overtime settings before using the pay estimate.
• Do not submit a timesheet without checking dates, daily totals, and weekly total.

Related calculators

For fast weekly totals, use the Work Hours Calculator. For detailed clock-in and clock-out rows with printable records, use the Time Card Calculator. For extra pay calculations, use the Overtime Calculator.

For converting minutes to payroll decimals, use the Hours to Decimal Calculator. For comparing two time values without weekly payroll context, use the Time Difference Calculator.

For time cards, work-hour totals, overtime checks, time differences, and payroll-friendly decimal hours, browse the timesheet and payroll calculators.

Timesheet Calculator FAQs