20 h = 1200 min (hour → minute)
20 h = 1200 min
20 hours (h) equals 1200 minutes (min). The conversion uses the exact factor 60: 20 × 60 = 1200.
Minutes = Hours × 60How 20 hours compares to its arithmetic neighbours, converted to minutes.
| Relation | hours | minutes |
|---|---|---|
| ÷10 | 2 h | 120 min |
| ÷2 (half) | 10 h | 600 min |
| ×1 (this value) | 20 h | 1200 min |
| ×2 (double) | 40 h | 2400 min |
| ×5 | 100 h | 6000 min |
| ×10 | 200 h | 12000 min |
Hours to minutes multiplies by 60. A 2.5-hour flight is 150 minutes; an 8-hour workday is 480 minutes. Use this conversion whenever you have a fractional-hour input (parking meters, time-tracking exports, hourly cost ledgers) and need a whole-minute output for a stopwatch or rate calculation. Beware decimal-minute confusion: 1.30 hours means 1 hour 18 minutes, not 1 hour 30 minutes — the decimal portion is a fraction of an hour, not minutes.
Nursing shift schedules are written in hours but medication timing runs in minutes: a 12 h shift is 720 min, and a 7.5 h shift (common in the UK) is 450 min. Charting software converts the shift length to minutes internally to calculate exact dosage-interval windows across a handover, since a drug due "every 4 hours" needs to be checked against elapsed minutes, not a rounded hour count.
Start with your value in hours.
Multiply the hour value by 60. This is the exact conversion factor from hours to minutes.
The product is your value in minutes. For example, 5 h × 60 = 300 min.
The exact factor from hours to minutes is 60.
Minutes = Hours × 60
Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.
| Hours (h) | Minutes (min) |
|---|---|
| 1 h | 60 min |
| 2 h | 120 min |
| 3 h | 180 min |
| 4 h | 240 min |
| 5 h | 300 min |
| 6 h | 360 min |
| 7 h | 420 min |
| 8 h | 480 min |
| 9 h | 540 min |
| 10 h | 600 min |
| 15 h | 900 min |
| 20 h | 1200 min |
| 25 h | 1500 min |
| 30 h | 1800 min |
| 45 h | 2700 min |
| 60 h | 3600 min |
| 90 h | 5400 min |
| 100 h | 6000 min |
| 120 h | 7200 min |
| 150 h | 9000 min |
| 180 h | 10800 min |
| 240 h | 14400 min |
| 300 h | 18000 min |
| 360 h | 21600 min |
| 450 h | 27000 min |
| 500 h | 30000 min |
| 600 h | 36000 min |
| 750 h | 45000 min |
| 900 h | 54000 min |
| 1000 h | 60000 min |
| 1200 h | 72000 min |
| 1500 h | 90000 min |
| 1800 h | 108000 min |
| 2400 h | 144000 min |
| 3000 h | 180000 min |
| 3600 h | 216000 min |
| 4500 h | 270000 min |
| 6000 h | 360000 min |
| 7200 h | 432000 min |
| 9000 h | 540000 min |
| 10000 h | 600000 min |
| 18000 h | 1080000 min |
| 36000 h | 2160000 min |
| 43200 h | 2592000 min |
| 86400 h | 5184000 min |
| 172800 h | 10368000 min |
| 604800 h | 36288000 min |
| 1000000 h | 60000000 min |
| 31557600 h | 1893456000 min |
| 100000000 h | 6000000000 min |
A standard workday is 8 h. A typical movie runs 1.5–2.5 h. In minutes, that gives you: 1 h = 60 min, 10 h = 600 min, 100 h = 6000 min.
The hour (h) equals exactly 3,600 seconds, or 60 minutes. It is the standard unit for daily scheduling, employment, and short-distance travel time. Like the minute, it is accepted for use with the SI but is not strictly part of the SI system.
The minute (min) equals exactly 60 seconds. The sexagesimal division of the hour into 60 minutes (and the minute into 60 seconds) descends from ancient Babylonian astronomy. The minute is accepted for use with the SI even though it is not formally part of it.
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