---
title: "Hours to Days — h to d converter"
description: "1 hour = 0.041667 days. Convert hours to days with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/hours-to-days/
site: "At One Place"
---

# Hours to days

**1 hour in days: 1 h = 0.041667 d**

d = h × 1/24

To convert hours to days, multiply by 0.04166666667. The table below gives the values people look up most often, and the converter works for any number.

## Hours to days table

*Common hour values converted to days.*

| Hours | Days |
| --- | --- |
| 1 h | 0.041667 |
| 2 h | 0.083333 |
| 3 h | 0.125 |
| 4 h | 0.16667 |
| 5 h | 0.20833 |
| 10 h | 0.41667 |
| 15 h | 0.625 |
| 20 h | 0.83333 |
| 25 h | 1.041667 |
| 30 h | 1.25 |
| 40 h | 1.666667 |
| 50 h | 2.083333 |
| 75 h | 3.125 |
| 100 h | 4.166667 |
| 250 h | 10.41667 |
| 500 h | 20.83333 |
| 1,000 h | 41.66667 |

## How the conversion works

The relationship is d = h × 1/24. Both units measure time, so the conversion is a fixed factor that never changes.

## Common questions

### How many days are in one hour?

One hour equals 0.041667 days. d = h × 1/24.

### How do you convert hours to days?

Use d = h × 1/24. So 10 h is 0.41667 d.

### How many hours are in one day?

One day equals 24 hours, which is the reverse of the conversion above.

## Related pages

- [Days to Hours](https://atoneplace.net/convert/days-to-hours/)
- [Hours to Seconds](https://atoneplace.net/convert/hours-to-seconds/)
- [Hours to Milliseconds](https://atoneplace.net/convert/hours-to-milliseconds/)
- [Hours to Minutes](https://atoneplace.net/convert/hours-to-minutes/)
- [Hours to Weeks](https://atoneplace.net/convert/hours-to-weeks/)
- [Hours to Months](https://atoneplace.net/convert/hours-to-months/)
- [Hours to Years](https://atoneplace.net/convert/hours-to-years/)

## Sources

- Guide for the Use of the International System of Units (SP 811) — NIST (https://www.nist.gov/pml/special-publication-811) [Public domain (US Government)]
- The International System of Units (SI Brochure) — Bureau International des Poids et Mesures (https://www.bipm.org/en/publications/si-brochure)
- Calculated on this page — At One Place (/about/)