Time to Decimal Calculator
This time to decimal calculator turns a clock time, like 1:30 or 7:45, into its decimal hour equivalent instantly, with no sign-up required.
Time ⇄ decimal converter
7:45 = 7.75 decimal hours
Prefer separate hour and minute fields? Try the hours to decimal calculator, or go the other way with the decimal to time calculator.
How it works
Enter a time
Type a clock time in h:mm format, like 7:45, into the first field.
Read the decimal
The decimal hours field updates instantly, with no button to press.
Switch direction anytime
Type into the decimal field instead, or use the toggle to flip which field comes first.
Time to decimal, or hours to decimal
Both produce the same decimal hour, just starting from a different shape of input.
Typing one h:mm value
Enter 7:45 as a single field, the way a punch clock or schedule already displays it, and get 7.75 back.
Typing separate fields
Enter 7 and 45 into two number fields instead. Use the hours to decimal calculator if that matches your source data better.
How to convert time to decimal
A clock time like 7:45 mixes two units, hours and minutes, while a decimal hour expresses the whole duration as one number. To convert, keep the hours as they are, divide the minutes by 60, and add the result to the hours: 7:45 becomes 7 + (45 ÷ 60) = 7.75. Payroll systems round that result to two decimal places, which is what the calculator above does by default.
To find hours worked between a start and an end time, convert each one to decimal separately, then subtract. A 9:15 start and a 17:45 end become 9.25 and 17.75, so the shift is 17.75 − 9.25 = 8.5 hours, not a subtraction of the original clock times.
Where time to decimal shows up
Anywhere a clock-in and clock-out get recorded, something downstream eventually needs the decimal version instead of the two raw clock times.
Time clock terminals
A punch clock records a clock-in and clock-out time, and payroll needs both converted to decimal before it can calculate hours worked.
Shift scheduling software
A shift listed as 9:00 to 17:30 has to become a decimal length, 8.5 hours, before it can be costed against an hourly rate.
Mileage & expense reimbursement
An expense report that logs a start and end clock time for a trip needs the elapsed time as a decimal to calculate a time-based reimbursement.
Common time to decimal values
Typical timesheet durations and their decimal-hour equivalents.
0:15 in decimal
0.25
0:30 in decimal
0.50
0:45 in decimal
0.75
1:00 in decimal
1.00
1:30 in decimal
1.50
2:00 in decimal
2.00
4:00 in decimal
4.00
6:00 in decimal
6.00
7:30 in decimal
7.50
7:45 in decimal
7.75
8:00 in decimal
8.00
8:30 in decimal
8.50
Common mistakes converting time to decimal
The math is one division and one addition, but a few habits still produce a wrong answer.
Dropping the minutes straight after the decimal point
7:45 is not 7.45. The minutes have to be divided by 60 first: 45 ÷ 60 = 0.75, making 7:45 equal to 7.75.
Subtracting clock times before converting either one
Finding hours worked between 9:15 and 17:45 by subtracting the raw text doesn't work. Convert each clock time to decimal first (9.25 and 17.75), then subtract: 17.75 − 9.25 = 8.5 hours.
Assuming a 24 hour clock time needs special handling
14:30 converts exactly the same way as any other time: 14 + (30 ÷ 60) = 14.5. There's no separate rule for times past 12:00.
Expecting every clock time to divide evenly
7:47 is 7 + (47 ÷ 60) = 7.7833..., which gets rounded to 7.78. Not every minute value lands on a clean two-decimal number, and that's expected.
Frequently asked questions
Common questions about converting between decimal hours and minutes.
What is a time to decimal calculator?
A time to decimal calculator converts a clock time in h:mm format, like 7:45, into a single decimal hour value, like 7.75. It's used for payroll, invoicing, and timesheets where durations need to be added or multiplied as plain numbers.
What is 1:30 in decimal?
1:30 is 1.5 decimal hours (1 hour + 30 ÷ 60 = 1.5).
What is 7:45 in decimal?
7:45 is 7.75 decimal hours (7 hours + 45 ÷ 60 = 7.75).
What is 8:15 in decimal?
8:15 is 8.25 decimal hours (8 hours + 15 ÷ 60 = 8.25).
What is 8:30 in decimal?
8:30 is 8.5 decimal hours (8 hours + 30 ÷ 60 = 8.5).
What is 0:45 in decimal?
0:45 is 0.75 decimal hours (45 ÷ 60 = 0.75).
How do I convert time to decimal?
Keep the hours as they are, divide the minutes by 60, and add the two together. For example, 5:20 → 5 + (20 ÷ 60) = 5.33 decimal hours.
Why isn't 7:45 the same as 7.45 in decimal?
Clock time is base-60 (60 minutes per hour), not base-10, so minutes can't be dropped straight after the decimal point. 45 minutes is 45 ÷ 60 = 0.75 of an hour, which makes 7:45 equal to 7.75, not 7.45.
What's the difference between this and the hours to decimal converter?
Same math, different input. This calculator takes one field in h:mm format, like 7:45. The hours to decimal converter uses two separate number fields for hours and minutes instead.
Can I use this for a 24 hour clock time like 14:30?
Yes. Enter 14:30 and the calculator returns 14.5 decimal hours (14 + 30 ÷ 60 = 14.5). It works the same way whether the hours field is 12 hour or 24 hour, since the conversion only cares about the minutes fraction.
How do I find hours worked between two clock times?
Convert each clock time to decimal separately, then subtract. A 9:15 start and a 17:45 end become 9.25 and 17.75, and 17.75 − 9.25 = 8.5 hours worked.
What is 6:47 in decimal?
6:47 is approximately 6.78 decimal hours (6 + 47 ÷ 60 = 6.7833..., rounded to 6.78). Not every minute value lands on a clean two-decimal number.
What is 10:15 in decimal?
10:15 is 10.25 decimal hours (10 + 15 ÷ 60 = 10.25).
Does it matter if the time is written as 7:45 or 07:45?
No. The leading zero is just a formatting choice; both represent the same clock time and convert to the same 7.75 decimal hours.
Why does a shift scheduling app show 8.5 instead of 9:00 to 17:30?
The 9:00 to 17:30 range is easy for a person to read, but a scheduling system needs a single decimal length, 8.5 hours, to multiply against an hourly rate or compare against a labor budget.
What is 3:36 in decimal?
3:36 is 3.6 decimal hours (3 + 36 ÷ 60 = 3.6), one of the cleaner conversions since 36 minutes is exactly six tenths of an hour.
Can this handle a time clock's rounded punches?
Yes, though the result will reflect whatever the time clock already rounded to. If a system rounds punches to the nearest quarter hour before you ever see the clock time, the decimal you get here inherits that same rounding rather than the exact original punch.