Hours to Minutes Converter
Convert hours to minutes — sixty to the hour, including the awkward decimal ones. Results update as you type; exact factors shown.
One hour is 60 minutes — see the exact factor, not a rounded rule of thumb.
How the hours to minutes converter works
Time converts through the second. Minutes, hours, days and weeks are exact multiples. A month is taken as the Gregorian average (30.436875 days) and a year as the Gregorian average (365.2425 days = 31,556,952 s); calendar months and leap years vary from these averages.
Australia is fully metric under the National Measurement Act 1960; imperial units appear only in trade with the US and in older documents.
Common time conversions
| From | To | Units |
|---|---|---|
| 0.25 h | 15 min | hours to minutes |
| 0.5 h | 30 min | hours to minutes |
| 0.75 h | 45 min | hours to minutes |
| 1 h | 60 min | hour to minutes |
| 1.5 h | 90 min | hours to minutes |
| 2 h | 120 min | hours to minutes |
| 2.5 h | 150 min | hours to minutes |
| 3 h | 180 min | hours to minutes |
| 4 h | 240 min | hours to minutes |
| 6 h | 360 min | hours to minutes |
| 8 h | 480 min | hours to minutes |
| 12 h | 720 min | hours to minutes |
Units in this converter and their exact factors
| Unit | Symbol | One unit in seconds |
|---|---|---|
| millisecond | ms | 0.001 second |
| second | s | 1 second |
| minute | min | 60 second |
| hour | h | 3,600 second |
| day | d | 86,400 second |
| week | wk | 604,800 second |
| month (average, 30.4369 days) | mo | 2,629,746 second |
| year (365.2425 days) | yr | 31,556,952 second |
FAQFrequently asked questions about time conversion
How many minutes in 1.5 hours?
90 minutes.
What is 7.75 hours in hours and minutes?
7 hours 45 minutes — the decimal 0.75 is three quarters of an hour.
Why do timesheets use decimal hours?
Because they multiply cleanly by an hourly rate; 7 h 45 min is awkward to multiply, 7.75 is not.
How many minutes in a working day?
Typically 456 for a 7.6-hour day, or 480 for eight hours.
What is 0.1 of an hour?
Six minutes — a common billing increment.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Measurement Institute (NMI) — Australia's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.