Free Time Card Calculator
Calculate total hours worked, overtime, double time, and weekly pay from your time card.
| Day | In | Out | Brk1 | Brk2 | Hours |
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A time card calculator is a free online tool that computes your total weekly hours from daily clock-in and clock-out times. Enter your start and end times for each day, include optional break deductions, and instantly see your total hours, overtime, double time, and gross pay for the week.
What makes this tool different: Most time card calculators lack overtime rules and shift differentials. CalcInstant handles daily overtime, weekly overtime, double time, night shift differential, multiple breaks per day, 12-hour and 24-hour clock modes, rounding options, and projects your annual pay — all while saving data to your browser for repeat use.
How it works
For each day, subtract the clock-in time from the clock-out time to get hours worked. Subtract any unpaid break time. Sum the daily totals to get your weekly total. Hours above 40 in the US are classified as overtime and paid at a minimum of 1.5x the regular rate under the Fair Labor Standards Act. The calculator offers two overtime rule options: weekly overtime (hours beyond 40 per week) which follows federal law, and daily overtime (hours beyond 8 per day) which matches requirements in states like California and Nevada. You can also customize the overtime multiplier — some union contracts or company policies use double time (2x) or time-and-a-half with different thresholds.
For overnight shifts (e.g., 11 PM to 7 AM), the calculator automatically adds 24 hours to the end time to correctly calculate 8 hours worked across midnight. Enter your hourly rate to instantly see gross regular pay and overtime pay calculated for you. The tool supports both 12-hour (AM/PM) and 24-hour time formats, with a toggle to switch between them. The rounding feature lets you round to the nearest minute, 15-minute increment (common in many workplaces), or 1/10th of an hour (6-minute increments used by many payroll systems). You can also display hours in decimal format (5.75 hours) instead of hours and minutes (5h 45m), which is useful when entering time into payroll software that expects decimal inputs.
When to use a time card calculator
Use a free time card calculator at the end of each work week to verify your paycheck matches the hours you actually worked. Hourly employees, freelancers, and part-time workers benefit most — especially those who work varying schedules or overtime hours. Tracking your own time independently of your employer's records helps catch discrepancies before payday, and having documented hours can be invaluable if a payroll dispute arises. The print function produces a clean time card report suitable for record-keeping or submitting with your timesheet.
Managers and small business owners can use it to quickly compute payroll hours without manual arithmetic or spreadsheet formulas. The break deduction fields (two per day) handle scenarios like unpaid lunch breaks plus a second break, common in longer shifts or split shifts. The Sunday-start option lets you align the work week to your company's schedule, which is especially useful for businesses that run Sunday-through-Saturday pay periods. All data is saved in your browser's local storage, so your time card entries persist even if you close the tab and come back later. Use the reset button when starting a new pay period, or keep multiple weeks running by noting down totals separately. For hourly workers, comparing your calculated gross pay against your pay stub is one of the best ways to ensure you are being compensated correctly for every hour worked.
Double time and night shift
Double time is typically paid at 2x the regular rate for hours worked beyond 12 in a single day, or on holidays. The calculator lets you set both the double-time threshold (default 12 hours) and the multiplier (default 2x). When any day exceeds the threshold, those hours are calculated at double time. Night shift differential adds a flat dollar amount per hour to all weekly hours when the night shift checkbox is selected. This is common in healthcare and manufacturing, where overnight workers receive $1–$5 per hour extra as a shift differential.
Related calculators
If you found this time card calculator helpful, check out the Tip Calculator for splitting restaurant bills, the Percentage Calculator for quick percentage math, and the Debt Payoff Calculator to plan your financial goals using your calculated earnings.
Frequently asked questions
How do I calculate hours worked between two times?
Subtract the start time from the end time, converting to minutes for precision. From 8:45am to 5:30pm: 5:30pm = 17:30, 17:30 - 8:45 = 8 hours 45 minutes = 8.75 hours. Subtract unpaid breaks: 8.75 - 0.5 (30-min lunch) = 8.25 hours. Multiply by your hourly rate for daily pay. Enter times directly in the calculator above.
How is overtime calculated for hourly workers?
Under US federal law (FLSA), overtime is paid at 1.5× the regular rate for all hours over 40 in a workweek. Some states (California, Alaska) require daily overtime for hours over 8 per day. Double time (2×) applies in California for hours over 12 in a day or on the 7th consecutive workday. Enter your rate and hours to see overtime pay calculated automatically.
How do I calculate time and a half pay?
Time and a half = regular hourly rate × 1.5. For a $18/hour employee working 45 hours in a week: first 40 hours = $18 × 40 = $720; overtime 5 hours = $18 × 1.5 = $27/hour × 5 = $135; total = $855. Always apply overtime to the regular rate — not any bonuses or premiums unless required by your state law.
How many hours can I work before getting overtime?
Under federal FLSA, overtime begins after 40 hours in a 7-day workweek. Your employer defines the workweek (e.g., Monday–Sunday). Working 9 hours Monday and 6 hours Friday in the same week is 15 hours — no overtime unless the weekly total exceeds 40. Some states have daily overtime thresholds. Salaried exempt employees typically don't receive overtime.
How do I convert minutes to decimal hours for payroll?
Divide the minutes by 60 to get decimal hours. 15 minutes = 0.25 hours, 30 minutes = 0.50 hours, 45 minutes = 0.75 hours. For 7 hours 20 minutes: 20 ÷ 60 = 0.333, so 7.333 hours. Multiply decimal hours by your hourly rate: 7.333 × $15 = $110. Most payroll systems use decimal hours rather than hours:minutes format.
What is the best way to track employee work hours accurately?
The most accurate methods are digital time clocks with biometric verification, time-tracking apps (Toggl, Clockify, QuickBooks Time), or web-based punch-in systems. Paper time cards work for simple operations but are prone to rounding and errors. Whatever system you use, round consistently — FLSA allows rounding to the nearest 5, 6, or 15 minutes if it averages out neutrally over time.