Add up your weekly work hours with unpaid breaks deducted — see total hours, regular vs overtime split (40-hour rule), and gross pay if you enter an hourly rate.

Time Card Calculator - Weekly Hours and Overtime

How to Read Your Time Card

• Decimal hours matter for payroll: 7 hours 45 minutes = 7.75 hours, not 7.45. Employers round in 6-minute (0.1 hr) or 15-minute (0.25 hr) increments
• The 40-hour rule: under the FLSA, non-exempt employees earn 1.5× their regular rate for every hour over 40 in a workweek — daily overtime isn't federally required (though some states like California add it)
• Unpaid breaks: meal breaks of 30+ minutes are typically unpaid and deducted; short rest breaks (5–20 min) must be paid under federal rules
• Rounding is legal but must be neutral: employers may round to the nearest quarter hour, but can't systematically round down

Running a Team? Manual Time Cards Don't Scale

Spreadsheets and paper cards work for one paycheck — then the errors and disputes start. Once you're tracking hours for employees, dedicated tools pay for themselves:

• Clockify — free forever for unlimited users; timers, timesheets and basic reports, the easiest zero-cost upgrade from paper
• Gusto — time tracking built into full payroll; hours flow straight into paychecks with taxes filed automatically, ideal once you're past 2–3 employees
• QuickBooks Time — strongest if your books already run on QuickBooks; GPS tracking for field crews

FAQ

How do I convert minutes to decimal hours?
Divide minutes by 60. 15 min = 0.25, 30 min = 0.5, 45 min = 0.75. So 8 hours 20 minutes = 8.33 hours.

Does this calculator handle overnight shifts?
Yes — if your end time is earlier than your start time (e.g., 10 PM to 6 AM), it automatically counts the shift as crossing midnight.

Is overtime calculated daily or weekly?
Federally, weekly — only hours over 40 in a workweek trigger 1.5× pay. Some states (California, Alaska, Nevada, Colorado) also require daily overtime after 8 or 12 hours; this calculator uses the federal weekly rule.

Formula and calculation logic

Daily paid hours = clock-out time − clock-in time − unpaid breaks. Weekly hours are the sum of daily paid hours. A simplified weekly overtime estimate separates hours above the entered threshold; actual federal and state rules can require a different workweek or daily overtime treatment.

Complete worked example

Five shifts from 9:00 a.m. to 5:30 p.m. with a 30-minute unpaid break equal 8 paid hours per day and 40 hours for the week. At $20 per hour with a 40-hour weekly threshold, regular gross pay is $800 and no overtime is added.

Common mistakes

• Subtracting a paid rest break as unpaid time.
• Rounding each punch too early instead of applying the employer’s lawful policy.
• Assuming every jurisdiction uses only a weekly 40-hour overtime rule.
• Using this estimate as a payroll record without reviewing edits and local requirements.

Primary sources

• U.S. Department of Labor — hours worked
• U.S. Department of Labor — overtime pay

Related guides

• Salary to Hourly Calculator
• Take-Home Pay Guide
• W-4 Withholding Guide

Change log

July 29, 2026 — documented break subtraction, weekly aggregation and overtime assumptions; added a complete five-shift example.