What is 1 hour 30 minutes in decimal?

1 hour 30 minutes in decimal is 1.5 hours. To convert hours and minutes to decimal, use the formula: decimal hours = hours + (minutes ÷ 60). So 1 + (30 ÷ 60) = 1.5 decimal hours. Use our free hours to decimal calculator to convert any time instantly.

How do I convert hours and minutes to decimal for payroll?

To convert hours and minutes to decimal for payroll, divide the minutes by 60 and add to the hours. For example, 7 hours 45 minutes = 7 + (45 ÷ 60) = 7.75 decimal hours. Then multiply by the hourly rate to get gross pay. Our payroll hours calculator does this conversion automatically.

What is 45 minutes as a decimal?

45 minutes as a decimal is 0.75 hours. This is calculated as 45 ÷ 60 = 0.75. So 8 hours 45 minutes = 8.75 decimal hours. See our complete minutes to decimal chart for all 60 minute values.

What is the formula for hours to decimal conversion?

The formula for hours to decimal conversion is: Decimal Hours = Hours + (Minutes ÷ 60) + (Seconds ÷ 3600). For example, 2h 30m = 2 + (30÷60) = 2.5 decimal hours. This formula is used by payroll software, timesheets, and billing systems worldwide.

What is 6-minute rounding in payroll?

6-minute rounding is a payroll method where time is rounded to the nearest 6-minute increment, which equals 0.1 of an hour. Key values: 6 min = 0.1, 12 min = 0.2, 18 min = 0.3, 30 min = 0.5, 60 min = 1.0. Our hours to decimal calculator supports 6-minute rounding automatically.

How accurate is this hours to decimal calculator?

Our hours to decimal calculator is accurate to 4 decimal places, which is more than sufficient for all payroll and billing purposes. You can also choose from rounding options (1-minute, 6-minute, 15-minute, 30-minute) to match your company's payroll rules.

Hours to Decimal Calculator – Convert Work Hours Instantly (Free)

How to Convert Hours to Decimal

Converting hours and minutes to decimal format is essential for accurate payroll calculations, timesheet management, and billing. Here's exactly how it works:

1

Take your hours as-is The whole number of hours stays the same. 2 hours = 2.

2

Divide minutes by 60 Convert the minutes to a decimal fraction. 30 minutes ÷ 60 = 0.5.

3

Add them together 2 hours + 0.5 = 2.5 decimal hours.

Decimal Hours = Hours + (Minutes ÷ 60) + (Seconds ÷ 3600) Example: 2h 45m = 2 + (45 ÷ 60) = 2 + 0.75 = 2.75 hrs

Common Conversion Examples

Time (HH:MM)	Calculation	Decimal Hours
0:15	0 + (15 ÷ 60)	0.25
0:30	0 + (30 ÷ 60)	0.50
0:45	0 + (45 ÷ 60)	0.75
1:30	1 + (30 ÷ 60)	1.50
2:45	2 + (45 ÷ 60)	2.75
7:20	7 + (20 ÷ 60)	7.33
8:00	8 + (0 ÷ 60)	8.00
7:45	7 + (45 ÷ 60)	7.75

⏱ Minutes to Decimal Hours — Complete Chart

Every minute from 1 to 60, instantly converted to decimal hours. Bookmark this page for fast payroll reference.

Highlighted values (15, 20, 30, 45 min) are the most commonly used in payroll. View the complete chart page →

Why Convert Hours to Decimal?

Decimal hours are the standard format used in payroll systems, spreadsheets, and invoicing software worldwide.

💼

Payroll Processing

Most payroll software (QuickBooks, ADP, Gusto) expects decimal hours. Converting manually saves time and prevents costly errors every pay period.

📊

Excel & Google Sheets

Spreadsheet formulas don't work with HH:MM time format for arithmetic. Decimal hours let you multiply by hourly rates and sum totals correctly.

📄

Client Invoicing

Billing clients is simple: 7.75 hours × $50/hr = $387.50. No complicated time arithmetic — just clean, precise decimal multiplication.

Frequently Asked Questions

Quick answers to the most common hours to decimal conversion questions.

1 hour 30 minutes in decimal is 1.5 hours. Calculated as: 1 + (30 ÷ 60) = 1 + 0.5 = 1.5. This means on a timesheet or payroll calculation, 1h 30m is recorded as 1.5 decimal hours.

To convert for payroll: divide the minutes by 60 and add to the whole hours. For 7h 45m: 7 + (45 ÷ 60) = 7 + 0.75 = 7.75 decimal hours. Then multiply by hourly rate: 7.75 × $20 = $155. Our calculator does this instantly above.

45 minutes as a decimal is 0.75 hours. This is because 45 ÷ 60 = 0.75. So 3 hours 45 minutes = 3.75 decimal hours.

"How do I convert decimal hours in Excel? ▼

In Excel, if your time is in HH:MM format in cell A1, use the formula =HOUR(A1)+MINUTE(A1)/60. If A1 is stored as a time value, you can also use =A1*24 to convert to decimal hours directly.

The formula is: Decimal Hours = Hours + (Minutes ÷ 60) + (Seconds ÷ 3600). For example, 2 hours 30 minutes = 2 + (30÷60) = 2.5 decimal hours.

6-minute rounding is a common payroll method where time is rounded to the nearest 6-minute increment (1/10th of an hour). So 6 minutes = 0.1h, 12 min = 0.2h, 18 min = 0.3h, and so on. Our calculator includes this rounding option.

Our calculator is accurate to 4 decimal places, which exceeds the precision needed for all payroll and billing use cases. It also shows you the step-by-step formula breakdown so you can verify every calculation yourself.