Time Card Calculator
Calculate Time Card by entering start and end dates or times. Get precise durations in years, months, days, hours, and minutes.
Reviewed by Abdullah, Technical Content Specialist · Editorial policy
Time Card Calculator Formula
Net Hours = (Clock Out - Clock In) - Break Time | Overtime = max(0, Total Hours - 40) | OT Pay = OT Hours × Rate × 1.5
For each day, the calculator subtracts the clock-in time from the clock-out time, then deducts break minutes to get net hours worked. Weekly totals are summed, and hours over the overtime threshold (default 40) are paid at the overtime multiplier (default 1.5x the regular rate). Regular pay covers hours up to the threshold at the standard rate.
Time Card Calculator — Worked Examples
Example 1: Standard Work Week with Overtime
Problem:Calculate pay for a week: Mon-Thu 8:00-17:30 (30min break), Fri 8:00-20:00 (30min break) at $20/hr.
Solution:Mon-Thu: 9.5hrs - 0.5hr break = 9.0 hrs/day × 4 = 36.0 hrs\nFriday: 12.0hrs - 0.5hr break = 11.5 hrs\nTotal: 36.0 + 11.5 = 47.5 hrs\nRegular: 40 hrs × $20 = $800\nOvertime: 7.5 hrs × $30 (1.5x) = $225
Result:47.5 total hours | $800 regular + $225 overtime = $1,025
Example 2: Part-Time Schedule
Problem:Calculate pay for Mon/Wed/Fri 10:00-15:00 (no break) at $18/hr.
Solution:Mon: 5.0 hrs\nWed: 5.0 hrs\nFri: 5.0 hrs\nTotal: 15.0 hrs (under 40, no overtime)\n15.0 × $18 = $270
Result:15.0 total hours | $270 gross pay | No overtime
Time Card Calculator — Frequently Asked Questions
Should break time be deducted from total hours?
Yes, unpaid breaks (typically lunch breaks of 30-60 minutes) should be deducted from total hours worked. The FLSA does not require meal or rest breaks, but if an employer provides short breaks (5-20 minutes), those are generally considered compensable work time. Meal periods of 30 minutes or more are not considered work time if the employee is completely relieved of duties. Enter your unpaid break time in the 'Break' column to deduct it from each day's total.
How do I convert between time zones?
Identify both time zones' UTC offsets and calculate the difference. EST is UTC-5, PST is UTC-8, so PST is 3 hours behind EST. Add hours when going east, subtract when going west. Online converters handle daylight saving time changes automatically.
What is epoch time (Unix timestamp)?
Epoch time counts the number of seconds since January 1, 1970 00:00:00 UTC. It provides a universal, timezone-independent way to represent time in computing. The current epoch time is over 1.7 billion. The Year 2038 problem affects 32-bit systems that will overflow.
How does daylight saving time work?
Most of the US springs forward one hour in March and falls back in November. Not all regions observe DST (Arizona, Hawaii, and most US territories do not). DST was intended to save energy by extending evening daylight. It complicates scheduling across time zones.