What is the Time Clock Calculator?
The Time Clock Calculator simulates an employee electronic time clock. It gives hourly workers and small business employers a fast, reliable way to record shift punches (Clock In, Lunch Out, Lunch In, Clock Out) and compute the exact worked duration after deducting lunch.
It features a 'Set to Current Time' button for fast mobile punching as well as full manual time editing.
Calculates total work duration, decimal hours, break time, and estimated pay based on your hourly wage.
How to Use This Calculator
- 1Enter your Clock In time (or tap 'Now' to set to current time).
- 2Enter your Lunch Start and Lunch End times (or leave blank if no break was taken).
- 3Enter your Clock Out time.
- 4Enter your hourly wage to estimate today's gross earnings.
- 5Review the total worked time, decimal hours, and copy your punch summary.
Time Clock Calculation
The unpaid lunch window is subtracted from the total elapsed punch time.
Worked Example: Punch Clock Entry: 8:00 AM to 4:30 PM with 30m Lunch
An employee clocks in at 8:00 AM, clocks out for lunch at 12:00 PM, returns at 12:30 PM, and clocks out at 4:30 PM.
Given Inputs
Step-by-Step Calculation
- Morning shift (8:00 AM to 12:00 PM) = 4 hours.
- Afternoon shift (12:30 PM to 4:30 PM) = 4 hours.
- Lunch break = 30 minutes.
- Total worked time = 8 hours 0 minutes (8.00 decimal hours).
Important Notes & Assumptions
- Works with 12-hour AM/PM and 24-hour military time formats.
- All calculations occur in local browser memory without storing or transmitting personal punch logs.
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Calculate daily and weekly work hours, subtract lunch breaks, and handle overnight shifts.
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Hours Worked Calculator
Calculate the exact elapsed time between start and end times minus lunch breaks.
Decimal Hours Calculator
Two-way conversion between hours and minutes (7h 30m) and decimal hours (7.50).