Time to Decimal Calculator

This calculator converts standard time hours, minutes, and seconds into decimal hours for invoicing, payroll, and timesheets.

See Also Decimal to Time Time Card Calculator Overtime Calculator

What Does Time to Decimal Mean?

Standard time is written in hours and minutes:

  • 9 hours 30 minutes
  • 7:15
  • 2 hours 45 minutes

Decimal time converts the minutes portion into a fraction of an hour.

For example:

  • 30 minutes = 0.50 hours
  • 15 minutes = 0.25 hours
  • 45 minutes = 0.75 hours

So:

  • 9 hours 30 minutes = 9.50 hours
  • 7 hours 15 minutes = 7.25 hours
  • 2 hours 45 minutes = 2.75 hours

In the US payroll system, this format makes wage calculations simple and consistent.

How to Convert Time to Decimal

The conversion is based on one simple idea:

  • There are 60 minutes in 1 hour.

To convert minutes to decimal hours, divide by 60.

Decimal Hours = Hours + (Minutes ÷ 60)

Step-by-Step Conversion Process

Step 1: Separate Hours and Minutes

Example: 7:30

  • Hours = 7
  • Minutes = 30

Step 2: Convert Minutes to Decimal

Divide minutes by 60:

  • 30 ÷ 60 = 0.50

Step 3: Add the Decimal to Hours

  • 7 + 0.50 = 7.50

Final answer: 7:30 = 7.50 hours.