Time Calculator
Build a list of durations with plus and minus signs and see the result as hours, minutes and seconds, as decimal hours and as days and hours.
Type 2:30, 1:15:30, 7.75 or 2h 15m.
How to use the time calculator
- Enter the first duration. You can type
2:30(hours and minutes),1:02:03(hours, minutes, seconds),1.5(decimal hours) or2h 15m. - Add more lines and choose + or - for each one.
- The result shows as h:mm:ss, decimal hours, total minutes, total seconds, and days plus hours for long totals.
This tool adds durations, not clock times. To find the time between 9:00 AM and 5:30 PM, use the hours calculator.
Examples
| Calculation | Result |
|---|---|
| 3:45 + 2h 20m + 1.5 | 7:35:00 (7.58 hours) |
| 5:10:30 - 2:45:50 | 2:24:40 |
| 12:00 - 0:45 - 0:30 | 10:45:00 |
| 30:00 + 20:30 | 50:30:00 (2 days 2.5 hours) |
| 0:45 + 0:50 + 0:40 | 2:15:00 |
A bare number such as 1.5 is read as decimal hours, so it means 1 hour 30 minutes. Use 1:05 or 1h 5m for one hour and five minutes.
Typical uses
- Adding the daily hours from a paper timesheet into a weekly total.
- Subtracting break time from a long shift: 12:00 minus 0:45 and 0:30 leaves 10:45.
- Adding track lengths, video clips or task estimates.
- Turning a total into decimals for payroll. For a conversion chart, see the time clock calculator.
Frequently asked questions
How do I add hours and minutes?
Add the minutes first. If they reach 60 or more, carry the extra hour. For example, 3:45 + 2:20 is 5 hours 65 minutes, which is 6:05. The calculator does the carrying for you.
How do I subtract time?
Choose the minus sign for the duration you want to take away. 8:30 minus 0:45 gives 7:45. If the result is negative, it is shown with a minus sign.
What is 7 hours 45 minutes in decimal?
7.75 hours, because 45 / 60 = 0.75.
What does 1.75 hours mean in hours and minutes?
1 hour 45 minutes. Multiply the decimal part by 60: 0.75 x 60 = 45.
Can I enter seconds?
Yes. Type h:mm:ss, such as 1:02:03, or use units such as 90s. The result is also given in total seconds.
Does this work with clock times like 9:00 AM?
No, it adds durations. For start and end times use the hours calculator, or the time card calculator for a full week.
More calculators
- Hours CalculatorEnter when you started, when you stopped and how long your unpaid break was.
- Time Card CalculatorFill in one week of punches and unpaid break minutes.
- Time Clock CalculatorPress Clock in when you start and Clock out when you finish.
- Timesheet CalculatorChoose a pay period and a start date, enter start, end and break for each day, and get total hours, overtime and gross pay for the whole period.
- Overtime CalculatorWork out your overtime rate and total pay in seconds, or enter your hours day by day to see how much counts as regular, overtime and double time under your rule.
- Hourly to Salary CalculatorEnter an hourly wage or a salary and see it as hourly, daily, weekly, biweekly, semi-monthly, monthly and annual pay before taxes.