100 minutes to hours
1.67 hr
100 min = 1.67 hr, or 1 hr 40 min.
hours
1.67hr
100 min = 1.67 hr
The short answer
How many hours is 100 minutes?
100 min = 1.67 hr, which reads as 1 hr 40 min. 1 minute = 0.016667 hours, so the working is 100 × 0.016667 = 1.67.
The working
The factor below is an exact definition rather than a measurement, so nothing is approximated in the arithmetic. The only rounding on this page happens where a number is displayed.
1 minute = 0.016667 hours 100 × 0.016667 = 1.67
100 minutes as 1 hr 40 min
A decimal is the right form for a spreadsheet and the wrong one for almost everything else. Split into whole units, 100 min is 1 hr 40 min — the reading you would actually give someone, and the one a tape measure, a scale, or a timetable is marked in.
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (hr) | Off by |
|---|---|---|
| Whole number | 2 | +0.33333 |
| 1 decimal | 1.7 | +0.03333 |
| 2 decimals | 1.67 | +0.00333 |
Round trip: take 1.67 hr back the other way and you land on 100.2000 min — a drift of 0.2000 min. That gap is the rounding, not the conversion.
Frequently asked questions
What is 100 minutes in hours?
100 minutes is 1.67 hours. 1 minute = 0.016667 hours, so the working is 100 × 0.016667 = 1.67.
What is 100 minutes written out in whole units?
1 hr 40 min. A decimal answer such as 1.67 hr is the right shape for a form field or a spreadsheet, but the compound form is what a tape measure, a scale, or a schedule actually reads.
How accurate is 1.67 hr?
Rounding to 1.67 hr and converting straight back gives 100.2000 min, a drift of 0.2000 min from the 100 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
Minutes to Hours Converter
Minutes to hours as a decimal — the format timesheets and payroll expect.
Open the minutes to hours converter →