---
title: "Miles per hour to Knots — mph to kn converter"
description: "1 mile per hour = 0.86898 knots. Convert miles per hour to knots with a full conversion table, the exact formula, and a calculator for any value."
url: https://atoneplace.net/convert/mph-to-knots/
site: "At One Place"
---

# Miles per hour to knots

**1 mile per hour in knots: 1 mph = 0.86898 kn**

kn = mph × 0.8689762419

To convert miles per hour to knots, multiply by 0.8689762419. The table below gives the values people look up most often, and the converter works for any number.

## Miles per hour to knots table

*Common mile per hour values converted to knots.*

| Miles per hour | Knots |
| --- | --- |
| 1 mph | 0.86898 |
| 2 mph | 1.737952 |
| 3 mph | 2.606929 |
| 4 mph | 3.475905 |
| 5 mph | 4.344881 |
| 10 mph | 8.689762 |
| 15 mph | 13.03464 |
| 20 mph | 17.37952 |
| 25 mph | 21.72441 |
| 30 mph | 26.06929 |
| 40 mph | 34.75905 |
| 50 mph | 43.44881 |
| 75 mph | 65.17322 |
| 100 mph | 86.89762 |
| 250 mph | 217.2441 |
| 500 mph | 434.4881 |
| 1,000 mph | 868.9762 |

## How the conversion works

The relationship is kn = mph × 0.8689762419. Both units measure speed, so the conversion is a fixed factor that never changes.

## Common questions

### How many knots are in one mile per hour?

One mile per hour equals 0.86898 knots. kn = mph × 0.8689762419.

### How do you convert miles per hour to knots?

Use kn = mph × 0.8689762419. So 10 mph is 8.689762 kn.

### How many miles per hour are in one knot?

One knot equals 1.150779 miles per hour, which is the reverse of the conversion above.

## Related pages

- [Knots to Miles per hour](https://atoneplace.net/convert/knots-to-mph/)
- [Miles per hour to Meters per second](https://atoneplace.net/convert/mph-to-meters-per-second/)
- [Miles per hour to Kilometers per hour](https://atoneplace.net/convert/mph-to-kmh/)

## 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/)