How to Calculate Time Card Calculator
What is Time Card Calculator?
A time card calculator totals employee work hours from punch-in and punch-out times across a pay period, calculating regular hours, overtime, and gross pay.
Formula
Total hours = Σ (end time − start time) for each day; Pay = total hours × hourly rate
- T_start
- Clock-in time (HH:MM)
- T_end
- Clock-out time (HH:MM)
- H_total
- Total hours worked (decimal hours)
Step-by-Step Guide
- 1Daily hours = Out time − In time − Unpaid breaks
- 2Weekly total = Sum of daily hours
- 3Overtime = Hours over 40/week (US) at 1.5× rate
- 4Gross pay = Regular hours × rate + Overtime hours × 1.5× rate
Worked Examples
Input
Mon–Fri 8am–5pm, 30min lunch, $18/hour
Result
8.5h/day × 5 = 42.5h; Reg: 40h × $18 = $720; OT: 2.5h × $27 = $67.50; Gross: $787.50
Frequently Asked Questions
How do I calculate hours worked across multiple days?
Sum each day: (end−start)−unpaid breaks. Convert to decimal (30 min = 0.5 hrs). Total = sum of all days.
Should I round punch times?
Depends on company policy. Some round to nearest 15 min. Best practice: track exact times for accuracy.
How do I handle overnight shifts (after midnight)?
Add 24 hours to end time if it's the next day. 11pm to 7am = 11:00 to 31:00 = 20 hours work.