Timesheet Converter

What the timesheet converter does

This converts between clock time and decimal hours, and it goes both ways. Turn hours and minutes into a decimal, so 8 hours 30 minutes becomes 8.5, which is the form payroll wants. Or take a decimal like 8.5 and turn it back into 8 hours and 30 minutes, so it reads as actual time again. One tool, switchable between the two directions, which is what keeps a timesheet consistent from end to end.

How to use it

1. Conversion Type. Choose Time to Decimal or Decimal to Time.
2. For Time to Decimal. Enter the hours and minutes.
3. For Decimal to Time. Enter the decimal value and say whether it is in hours or minutes.

Press Calculate for the result. The form swaps its inputs to match the direction you pick.

How it converts each way

Going from time to decimal, it divides the minutes by 60 and adds them to the hours, since each minute is one sixtieth of an hour. So 30 minutes is 30 divided by 60, which is 0.5, giving 8.5 for 8 hours 30 minutes. Going the other way, from a decimal of hours, it keeps the whole number as the hours and multiplies the leftover fraction by 60 to get the minutes, so 8.5 becomes 8 hours and 30 minutes. The two operations are exact opposites of each other.

Why a timesheet needs both directions

This is the reason a two-way tool earns its place. Payroll and billing systems work out money by multiplying an hourly rate by the hours, and you cannot cleanly multiply a rate by "8 hours 30 minutes," but you can multiply it by 8.5. So time goes into the system as a decimal. The trouble is that a decimal like 7.25 is not obvious as a length of time at a glance, so to read it, or to check it, you want it back as 7 hours 15 minutes. A timesheet ends up needing the trip in both directions, decimal for the maths and clock time for the reading, and this handles both.

The conversions worth memorising

A few come up so often they are worth knowing by heart. A quarter of an hour, 15 minutes, is 0.25. Half an hour, 30 minutes, is 0.5. Three quarters, 45 minutes, is 0.75. Once those are in your head, a lot of conversions become quick mental sums, and the tool is there for the ones that are not as round.

Where it fits

Payroll and invoicing, mostly, where hours have to become decimals for the pay maths and then read back as time for checking. It is handy any time you are reconciling a timesheet, billing a client by the hour, or simply trying to make sense of a figure that is recorded one way when you think in the other.

Questions people ask

Which direction do I need?

Time to decimal when you are putting hours into a payroll or billing system, and decimal to time when you are reading a decimal figure back as ordinary hours and minutes.

Does it do both directions?

Yes. A switch at the top flips it between converting time into decimal and decimal back into time, so you do not need a separate tool for each way.

What is 30 minutes as a decimal?

0.5, because 30 divided by 60 is a half. Likewise 15 minutes is 0.25 and 45 minutes is 0.75.

Is there a tool that only does one direction?

Yes, if you only ever need one way, a dedicated time-to-decimal or decimal-to-time converter is simpler. This one is for when you need both in the same place.