Need to convert 2 hours and 45 minutes into decimal hours for a timesheet? Or figure out exactly how many seconds are in a weird time block?

Manual time math is tedious and error-prone. One wrong calculation and your payroll, invoice, or project estimate is off.

This Time Unit Converter does the work for you — instantly converting any combination of hours, minutes, and seconds into the format you need.

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How to Use This Tool

Getting your conversion takes about 3 seconds:

1. Enter your time in the three fields:
   • Hours (enter 0 if none)
   • Minutes (enter 0 if none)
   • Seconds (enter 0 if none)
2. Click “Convert” (or just press Enter)
3. View your results — the tool displays your time in four formats simultaneously

Works identically on desktop and mobile. No app download, no account required.

Example Conversion

Let’s say you worked 1 hour, 45 minutes, and 30 seconds on a project:

• Input: Hours: 1 | Minutes: 45 | Seconds: 30
• Click: Convert

Results:

• Time Input: 1h 45m 30s
• Hours: 1.76 hours
• Minutes: 105.50 minutes
• Seconds: 6330 seconds

Now you know that 1:45:30 equals 1.76 decimal hours — the format most timesheet software requires.

Understanding Your Results

The converter outputs four values:

Time Input confirms what you entered, formatted as hours-minutes-seconds. Use this to double-check your entry.

Hours (decimal) shows your total time as a decimal number. This is what payroll systems, billing software, and project management tools typically require. For example, 1 hour and 30 minutes becomes 1.50 hours — not 1.30.

Minutes (decimal) converts everything to minutes. Useful for quick comparisons or when working with minute-based tracking.

Seconds (total) gives you the raw count of seconds. Helpful for precise calculations, video editing timecodes, or scientific applications.

How the Conversion Works

The math behind this tool is straightforward but easy to mess up by hand.

First, your input gets converted to total seconds using this formula:

Total Seconds = (Hours × 3600) + (Minutes × 60) + Seconds

From there:

• Decimal Hours = Total Seconds ÷ 3600
• Decimal Minutes = Total Seconds ÷ 60

Why does this matter? Because “1 hour 30 minutes” is not 1.30 hours in decimal. It’s 1.50 hours. Mixing up these formats is one of the most common timesheet errors — and it can cost you money or create payroll headaches.

FAQ

How do I convert minutes to decimal hours?

Divide the minutes by 60. For example, 45 minutes ÷ 60 = 0.75 hours. Or just enter your time into the converter above and read the decimal hours result directly.

What’s the difference between 1.30 hours and 1 hour 30 minutes?

They’re not the same. 1.30 decimal hours equals 1 hour and 18 minutes (because 0.30 × 60 = 18 minutes). If you mean one and a half hours, the decimal is 1.50 hours. This tool helps you avoid that confusion.

Can I use this for timesheet calculations?

Yes — that’s one of the most common uses. Enter your start-to-end time duration, and the decimal hours output is ready for most payroll or invoicing systems.

Does this work for large time values?

Absolutely. Enter 100 hours, 500 minutes, or any value you need. The tool handles large numbers without issue.

Is this tool accurate?

The converter uses standard mathematical formulas and displays results to two decimal places for hours and minutes. For everyday use like timesheets, billing, and scheduling, this precision is more than sufficient.

When You’ll Need This Tool

Freelancers and contractors use it to convert tracked work time into billable decimal hours.

HR and payroll teams rely on decimal hours for accurate wage calculations.

Project managers convert task durations when estimating timelines or comparing actuals to estimates.

Students and educators use it for time-based math problems or converting experiment durations.

Video editors and podcasters sometimes need precise second counts for timing cuts and segments.

Quick, Accurate, Done

Time conversion doesn’t need to be complicated. Enter your hours, minutes, and seconds — get your decimal hours, total minutes, and total seconds instantly.

Bookmark this page for the next time you need a quick conversion. And if you’re working with dates or other calculations, check out the related tools below.