Hours Calculator

Need a time duration calculator to find the number of hours and minutes between a start time and end time? Enter your times in the calculator above. It returns your total hours worked, including a decimal hours conversion ready for payroll.

This free hours calculator handles single shifts, full work weeks, lunch break deductions, and overtime tracking. Whether you are filling out a timesheet or verifying a paycheck, the tool gives you a clear total in both clock time and decimal form.

Hour Calculator for Total Work Hours

The hour calculator adds up every shift you enter and returns one total. You pick a start time, an end time, and an optional break. The tool does the rest.

Here is what the calculator returns for each entry:

• Hours and minutes worked in standard clock time (e.g., 8 hours 30 minutes)
• Decimal hours for payroll math (e.g., 8.50)
• Running total across multiple days or shifts

If your total work time for the week is 40 hours and 22 minutes, the calculator converts that to 40.37 decimal hours. Multiply by your hourly pay rate and you have your gross pay before taxes.

Have you been struggling to add up the number of hours you worked this week? Enter each day's start time and end time, deduct any break time, and let the calculator sum everything into one total.

How to Calculate Hours and Minutes

To calculate time by hand, subtract the start time from the end time. If you started at 8:15 AM and finished at 4:45 PM, that is 8 hours and 30 minutes. When a lunch break is involved, subtract that too.

The tricky part is not the hours. It is the minutes. Payroll systems do not use minutes. They use decimal hours. That is where most people get stuck.

Clock time to decimal hours

Clock time splits an hour into 60 minutes. Decimal time splits it into 100 units. To convert, divide the minutes by 60.

Common conversions you will see often:

So 15 minutes equals a quarter of an hour, or 0.25. And 30 minutes equals 0.50 (half an hour). The calculator handles this conversion automatically every time you enter a shift.

Convert time to decimal for payroll

Payroll software expects decimal hours. If you worked 41 hours and 15 minutes this week, you need to convert that to 41.25 before multiplying by your hourly rate.

Here is the quick formula:

1. Take the minutes portion of your total (15 minutes).
2. Divide by 60 (15 ÷ 60 = 0.25).
3. Add that decimal part to the whole hours (41 + 0.25 = 41.25).

Now multiply 41.25 by your hourly pay rate for your total pay. The calculator does this in one step, so you never have to do the long division yourself.

What about 22 minutes? Divide 22 by 60 and you get approximately 0.37. A total of 40 hours and 22 minutes becomes 40.37 decimal hours. No rounding guesswork required.

A note on the 7 minute rule: Some payroll systems round to the nearest quarter hour. Under this method, 1 to 7 minutes round down and 8 to 14 minutes round up. This calculator gives you the exact decimal number of hours so you can see the precise figure before any employer rounding is applied.

Time Card Calculator for Hours Worked

Use this as a time card calculator by entering each day of your work week. The tool tracks every shift, deducts break time, and totals your hours worked across all entries.

For each day, you will enter:

• Start time (when you clocked in)
• End time (when you clocked out)
• Break duration (lunch break or other break time to deduct)

The calculator returns hours and minutes worked for that day plus a running total for the period. This is exactly what a paper timecard or time sheet captures, just faster and without arithmetic errors.

Timecard calculator with military time

If your time clock uses a 24-hour clock format, enter times the same way. For example, 1:00 PM becomes 13:00, and 5:30 PM becomes 17:30. The calculator accepts both 12-hour and 24-hour formats.

Quick military time reference:

• 6:00 AM = 06:00
• 12:00 PM = 12:00
• 3:00 PM = 15:00
• 9:00 PM = 21:00
• 11:59 PM = 23:59

Using military time eliminates AM/PM confusion, especially for overnight shifts that cross midnight.

Calculate number of hours between start and end time

To find the hours between two times, the calculator subtracts your start time from your end time. If you started at 07:30 and ended at 16:00, that is 8 hours and 30 minutes.

Overnight shifts work the same way. A shift from 10:00 PM to 6:00 AM still returns 8 hours. The tool recognizes when the end time falls on the following day.

When you deduct a lunch break of, say, 30 minutes, the result becomes 8 hours minus 0.50, or 7 hours and 30 minutes (7.50 decimal hours).

Work Hours Calculator for Your Work Week

This work hours calculator lets you enter an entire work week at once. Add up to seven days of shifts, and the tool sums your total hours and minutes for the full period.

A standard work week is 40 hours. If you work five 8-hour days with a 30-minute lunch break each day, your total time worked is 37 hours and 30 minutes (37.50 decimal hours). The calculator makes that total visible immediately.

Calculate hours for overtime

Overtime typically begins after 40 hours in a work week (rules vary by location and employer). The calculator can flag hours beyond that threshold.

Here is how overtime calculation works in practice:

1. Enter all shifts for the week.
2. The calculator totals your hours worked.
3. Any time above 40 hours shows as overtime hours.

If you worked 41 hours and 15 minutes, that is 1.25 hours of overtime. At time and a half, multiply those 1.25 overtime hours by 1.5 times your hourly rate, then add it to the pay for your first 40 hours.

This calculator estimates totals. It does not determine your legal overtime eligibility. Check your local labor rules or ask your employer about overtime policies.

Total hours and minutes per day

Each row in the calculator shows your time worked for that individual day. This is useful for spotting patterns or verifying a single timecard entry.

For example:

Day by day breakdowns help you reconcile your time sheet against a pay stub. If something looks off, you can identify which day has the discrepancy.

Digital Time, Time and Decimal Conversion

Digital time is the format shown on a clock: hours and minutes separated by a colon (8:45). Decimal time expresses the same duration as a single number (8.75). Payroll, billing, and project tracking all rely on the decimal format.

Converting between the two is the most common source of timecard errors. People frequently treat 8 hours and 45 minutes as 8.45 instead of 8.75. That small mistake costs real money across a pay period.

Use this reference for common conversions:

• 6 minutes = 0.10 (one tenth of an hour)
• 12 minutes = 0.20
• 15 minutes = 0.25 (a quarter of an hour)
• 30 minutes = 0.50 (half an hour)
• 45 minutes = 0.75

The calculator converts every entry automatically, so you always see both formats side by side.

Time Calculator for Decimal Hours and Clock Time

This time calculator works in both directions. Enter clock time and get decimal hours. Or enter a decimal number of hours and see the equivalent hours and minutes.

That flexibility is helpful when you are:

• Filling out a timesheet that requires decimal hours
• Checking a paycheck where the employer used decimal payroll hours
• Billing a client who needs time in hours and minutes
• Tracking project hours across multiple time formats

Enter your values, hit the calculate button, and the result appears in both formats instantly. No manual division or multiplication needed.

What This Work Hours Calculator Estimates

This free hours calculator is a planning and verification tool. It estimates total hours worked, converts between clock time and decimal hours, and helps you calculate total pay based on an hourly rate.

What it does:

• Adds hours and minutes across multiple shifts
• Converts time to decimal for payroll
• Deducts lunch breaks and other break time
• Flags hours beyond a 40-hour work week for overtime awareness
• Accepts both 12-hour and 24-hour (military) time

What it does not do:

• Replace official employer timekeeping or payroll software
• Account for specific overtime laws in your state or country
• Serve as a legal record of employee time
• Calculate taxes, deductions, or net pay

Results are estimates. For official payroll, tax, or labor law questions, consult your employer or a qualified professional. Use this calculator to quickly verify your numbers before submitting a time sheet or reviewing a paycheck.

Hour Calculator FAQs

How many hours and minutes did I work?

Enter your start time, end time, and any break time in the calculator. It instantly shows the number of hours and minutes between two times. For a full week, enter times for each work period and the calculator adds up the total.

How to calculate hours for payroll

For payroll processing, use this as a payroll hours calculator: convert your total hours and minutes worked into decimal hours. The calculator does this automatically. Multiply your decimal hours by your hourly pay rate to get gross pay. For weeks over 40 hours, calculate overtime hours separately at 1.5x your rate.

This calculator is a planning aid. Always verify final payroll figures with your employer or payroll system.

How does the time calculator handle different time zones?

This calculator works with the times you enter. It does not adjust for time zones automatically. If your start time and end time are in different time zones, convert both to the same zone before entering them. For example, convert everything to your local time or to UTC.

Can this calculator work as a time sheet?

Yes. Enter clock-in and clock-out times for each day, add lunch breaks, and the calculator totals your hours for the week. It functions as a free timesheet for tracking employee time or your own hours. Results are estimates for personal tracking, not a replacement for official time clock software.

What is the difference between decimal hours and hours and minutes?

Hours and minutes is the standard format: 8 hours and 15 minutes. Decimal hours expresses that same duration as 8.25. The decimal format is easier for math. Multiply 8.25 by your hourly pay and you get your earnings directly. The minutes format (8:15) requires conversion first. This calculator shows both, so you can pick the one you need.

More Hours Calculator FAQs

How do I calculate decimal hours for my timecard?

Divide minutes by 60 and add the result to whole hours. Example: 40 hours and 22 minutes → 22 ÷ 60 ≈ 0.37 → 40.37 decimal hours. The hours calculator shows clock time and decimal hours together so your timecard matches payroll.

Does this calculator track overtime?

It can flag totals above a typical 40-hour work week so you can see overtime hours. Multiply overtime hours by your overtime rate (often 1.5×) separately. Rules vary by employer and location — treat the flag as a planning estimate.

Can I deduct lunch and still get accurate hours worked?

Yes. Enter break duration for each shift. The calculator with lunch deducted returns paid hours only — for example, 9:00–17:30 with a 30-minute lunch is 8.00 decimal hours worked in a day.