Time Card & Time Clock Calculator
Free time card calculator that converts clock-in and clock-out times into total hours worked and gross pay. Enter your time clock entries, break duration, and hourly rate to calculate weekly pay with automatic overtime.
| Day | Start | End | Break (min) | Hours | Regular Pay |
|---|---|---|---|---|---|
| MondayMon | 7.50 | $187.50 | |||
| TuesdayTue | 7.50 | $187.50 | |||
| WednesdayWed | 7.50 | $187.50 | |||
| ThursdayThu | 7.50 | $187.50 | |||
| FridayFri | 7.50 | $187.50 |
Total Hours
37.50
Regular Hours
37.50
Overtime Hours
0.00
Gross Pay
$937.50
Automate This With Rize
Stop filling out timecards manually. Rize runs in the background and tracks your hours automatically, so you never miss a billable minute.
How to Calculate Timecard Hours
Calculating timecard hours is straightforward once you understand the four-step process. Whether you are paid weekly or biweekly, the math is the same: convert your clock-in and clock-out times to decimal hours, subtract unpaid breaks, then multiply by your hourly rate.
Clock in
Record the exact time you start working. Use 24-hour format or AM/PM — just be consistent. If your shift starts at 8:45 AM, write 8:45, not "around 9."
Clock out
Record the exact time you stop working. Subtract the start time from the end time to get your gross hours. For example, 5:30 PM minus 8:45 AM equals 8 hours and 45 minutes, or 8.75 hours in decimal.
Subtract breaks
Deduct any unpaid break time from your gross hours. A 30-minute lunch break reduces 8.75 hours to 8.25 net hours. Most states require a 30-minute meal break for shifts over 5 hours, though rules vary by jurisdiction.
Calculate pay
Multiply your net hours by your hourly rate. At $25/hour, 8.25 hours earns $206.25 for the day. Hours over 40 per week are typically paid at 1.5x your regular rate under the Fair Labor Standards Act (FLSA).
Who This Calculator Is For
This free timecard calculator works for anyone who needs to convert clock-in and clock-out times into total hours and pay. Here are the most common use cases.
Hourly employees tracking daily shifts
If you are paid by the hour, accurate timecards protect your paycheck. Enter your schedule here to verify your employer is paying for every minute worked — then let Rize track it automatically going forward.
Freelancers and contractors billing by the hour
Billable-hour freelancers lose an average of 2.5 hours per week to untracked work. Use this calculator to estimate your weekly earnings, then switch to automatic tracking to capture every billable minute.
Small business owners managing payroll
Verify employee hours and overtime before running payroll. This calculator handles the 40-hour overtime threshold automatically, so you can spot discrepancies before they become costly errors.
Managers verifying employee timecards
Cross-check submitted timecards against expected schedules. If manual verification takes more than a few minutes per employee, automatic time tracking eliminates the review step entirely.
When to Upgrade From Manual Tracking
Manual timecards work for simple schedules, but they break down as your work becomes more complex. Here are three signs it is time to switch to automatic time tracking.
You are spending more than 5 minutes per day on time entry
Five minutes a day is over 20 hours a year spent on administrative busywork. Automatic tracking runs silently in the background and records your hours without any manual input.
You suspect billable hours are being under-reported
Studies show that manual time tracking misses 10-15% of actual work hours. If you bill clients by the hour, that leakage translates directly to lost revenue.
You need project-level breakdowns, not just total hours
A timecard tells you how many hours you worked, but not where those hours went. Rize categorizes your time by project and client automatically using AI, giving you the detail you need for invoicing and profitability analysis.
Time Clock Minutes to Decimal Hours
Use this reference table to convert time clock minutes into decimal hours for payroll. Decimal hours are required when multiplying hours worked by an hourly rate.
| Minutes | Decimal | Minutes | Decimal | Minutes | Decimal |
|---|---|---|---|---|---|
| 5 min | 0.08 | 25 min | 0.42 | 45 min | 0.75 |
| 10 min | 0.17 | 30 min | 0.50 | 50 min | 0.83 |
| 15 min | 0.25 | 35 min | 0.58 | 55 min | 0.92 |
| 20 min | 0.33 | 40 min | 0.67 | 60 min | 1.00 |
Common payroll intervals highlighted. Formula: decimal = minutes / 60.
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Frequently Asked Questions
Subtract your start time from your end time, then subtract any break duration. For example, if you start at 9:00 AM, end at 5:00 PM, and take a 30-minute lunch, your total hours are 7.5 (8 hours minus 0.5 hours of break).
Multiply your total hours worked (after subtracting breaks) by your hourly rate. If you worked 7.5 hours at $25/hour, your gross pay is $187.50. For overtime, hours over 40 per week are typically paid at 1.5x your regular rate.
A timecard tracks clock-in and clock-out times for each day, while a timesheet records hours spent on specific projects or tasks. Timecards are commonly used for hourly employees, while timesheets are used for project-based billing and salaried workers.
Yes. Automatic time tracking software like Rize records your work sessions in the background without requiring manual clock-ins. Rize detects which app or website you are working in and categorizes your time automatically, so your timecard reflects what you actually worked — not what you remembered to log.
A time clock calculator converts clock-in and clock-out times into total hours worked and pay owed. It replaces manual subtraction by automatically handling AM/PM conversion, overnight shifts, break deductions, and overtime at 1.5x over 40 hours per week. This calculator functions as both a time clock calculator and a timecard calculator.
Divide the minutes by 60. For example, 7 hours and 45 minutes equals 7.75 decimal hours (45 / 60 = 0.75). Common conversions: 15 min = 0.25, 30 min = 0.50, 45 min = 0.75. Decimal hours are required for payroll calculations because you cannot multiply a time format like 7:45 by a dollar rate.
Under the Fair Labor Standards Act (FLSA), non-exempt employees earn 1.5x their regular rate for hours over 40 per week. Add up all hours from your time clock for the work week, subtract 40, and multiply the remainder by 1.5x your hourly rate. This calculator handles overtime automatically.
A time clock is the device or system that records when an employee clocks in and out. A timecard is the record produced by the time clock showing start times, end times, and total hours. Digital time clocks generate timecards automatically, while paper time clocks require manual timecard calculation like this tool provides.