Free Decimal Hours Calculator - Convert Hours and Minutes to Decimal

Values are rounded to two decimal places.

How to Convert Decimal Hours Back to Hours and Minutes

You can also convert decimal hours back into regular hours and minutes.

Use this formula for the minute portion:

Minutes = Decimal Portion × 60

Example: Convert 6.75 Decimal Hours

The whole number is:

6 hours

Take the decimal portion:

0.75

Multiply it by 60:

0.75 × 60 = 45

So:

6.75 decimal hours = 6 hours 45 minutes

If the decimal number has already been rounded, converting it back to minutes may produce an approximate result rather than the exact original time.

Decimal Hours vs. Hours and Minutes

Clock time and decimal time describe the same duration in different formats.

The number after the decimal point is a fraction of an hour, not the number of minutes.

For example:

8:45 ≠ 8.45 decimal hours

The correct conversion is:

8:45 = 8.75 decimal hours

That's because:

45 ÷ 60 = 0.75

Why are Decimal Hours Used for Payroll and Timesheets?

Decimal hours make it easier to perform calculations with time.

Suppose an employee works 7 hours 45 minutes at an hourly rate of $20.

First, convert the time:

7 hours 45 minutes = 7.75 hours

Then calculate the amount:

7.75 × $20 = $155

The same method can be used when calculating employee pay, contractor payments, project costs, or client invoices.

Decimal hours can be especially useful for:

• Employee timesheets
• Payroll calculations
• Hourly employee payments
• Contractor payments
• Client billing
• Project costing
• Billable-hour calculations
• Spreadsheet calculations
• Work-hour reports
• Attendance records

Common Decimal Hour Conversion Mistakes

Treating Minutes as Digits After the Decimal

Writing 8.45 for 8 hours 45 minutes is incorrect.

8.45 hours actually means:

8 hours + (0.45 × 60 minutes)

which equals:

8 hours 27 minutes

The correct decimal value for 8 hours 45 minutes is:

8.75 hours

Dividing Minutes by 100

There are 60 minutes in an hour, so minutes must be divided by 60, not 100.

For example:

30 ÷ 60 = 0.50

Therefore:

6 hours 30 minutes = 6.50 hours

Rounding Too Early

Some minute values produce repeating decimals.

For example:

20 ÷ 60 = 0.333333...

For calculations involving pay or billing, calculate using as much precision as your system requires and round only when appropriate.

Confusing Decimal Conversion With Time Rounding

Converting minutes into decimal hours and rounding an employee's clock-in or clock-out time are two different things.

This calculator converts one time format into another. It does not decide which working time should be counted, apply an employer's time-rounding policy, or determine compensable hours.

If you use decimal hours for payroll, follow the applicable wage-and-hour rules and your organization's timekeeping policy.

Converting One-Time Entry Is Easy. Converting an Entire Team's Timesheets Isn't.

A decimal hour calculator is convenient when you have a few entries to convert.

But if you're managing employees, contractors, projects, or multiple clients, repeatedly converting hours by hand creates unnecessary work.

Apploye helps you automate the process.

With Apploye, you can:

• Track work hours automatically
• Add or manage manual time when needed
• View daily, weekly, biweekly, monthly, and custom timesheets
• Track time by project and task
• Separate billable and non-billable work
• Review and approve timesheets
• Set hourly pay and billing rates
• Calculate payroll from tracked work hours
• Generate reports for payroll and client billing
• Export time reports, including decimal-format data

Instead of collecting timesheets and converting work hours at the end of every pay period, keep the time records organized from the moment work starts.