# Time calculator: minutes to hours

Converts minutes (min) to hours (h) and back, with the exact unit definitions.

- Page: https://www.acalculator.org/convert/minutes-to-hours
- JSON spec: https://www.acalculator.org/convert/minutes-to-hours.json
- Version: bee87ccd895e

## Default answer

Example with the default inputs (Minutes (min) 1): 1 min = 0.016667 h (0 h 1 min).

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| value | Minutes (min) | The amount in minutes to convert. |
| result | Hours (h) | The same amount in hours. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| value | Minutes (min) | The amount in minutes to convert. |
| result | Hours (h) | The amount in hours. |
| hm | Hours and minutes | Whole hours and the minutes left over, to 0.01 min. |

## Method

h = min × 0.0166666666667 (the same as min ÷ 60)

## Assumptions

- 1 minute = 0.0166666666667 hours, from the exact definitions in NIST SP 811.
- Exact on the typed decimals: at most 6 decimal places (6 significant digits below 0.0001), rounded half up.
- Hours and minutes use the box you typed; minutes round half up to 0.01, and 60.00 carries.

## Worked examples

1. value = 90 gives result = 1.5. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
2. value = 135 gives result = 2.25. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.
3. result = 2.25 gives value = 135. Source: Exact unit definitions in NIST SP 811 (2008), Appendix B.8.

## FAQ

### How many hours are in a minute?

1 minute is 0.016667 hours, from the exact unit definitions (NIST SP 811).

### How do I convert minutes to hours?

Multiply by 0.016667: h = min × 0.0166666666667 (the same as min ÷ 60). For example, 1 min × 0.016667 = 0.016667 h.

### How do I convert hours back to minutes?

Multiply by 60, or type the hours into the second box and the converter works it out. 1 hour is 60 minutes.

### How do I turn minutes into hours and minutes?

Divide by 60. The whole number is the hours, and the rest × 60 is the minutes. 135 minutes is 2.25 hours, which is 2 hours and 0.25 × 60 = 15 minutes.

### What is 0.5 hours in minutes?

30 minutes. Decimal hours are fractions of 60 minutes: 0.25 h = 15 min, 0.5 h = 30 min, 0.75 h = 45 min. Timesheets often use decimal hours.

### How are the minutes rounded?

The hours-and-minutes line rounds the minutes half up to 0.01 minute. If they round to 60.00, they count as one more hour.

## Sources

- NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B.8. https://www.nist.gov/pml/special-publication-811