---
title: "18 mph to kn = 15.64157 kn"
description: "18 miles per hour is 15.64157 knots. The arithmetic, a table of nearby values, and a converter for any other number."
url: https://atoneplace.net/convert/18-mph-to-knots/
site: "At One Place"
---

# 18 mph to kn

**18 miles per hour in knots: 18 mph = 15.64157 kn**

kn = mph × 0.8689762419

18 miles per hour is 15.64157 knots. To get there, multiply by 0.8689762419.

## Values either side

*Miles per hour near 18, converted to knots.*

| Miles per hour | Knots |
| --- | --- |
| 14 mph | 12.16567 |
| 15 mph | 13.03464 |
| 16 mph | 13.90362 |
| 17 mph | 14.7726 |
| 18 mph ← | 15.64157 |
| 19 mph | 16.51055 |
| 20 mph | 17.37952 |
| 21 mph | 18.2485 |
| 22 mph | 19.11748 |

## 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

### What is 18 mph in knots?

18 mph is 15.64157 kn.

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

Multiply by 0.8689762419.

## Related pages

- [Miles per hour to knots](https://atoneplace.net/convert/mph-to-knots/)
- [18 kn to mph](https://atoneplace.net/convert/18-knots-to-mph/)
- [14 mph to kn](https://atoneplace.net/convert/14-mph-to-knots/)
- [15 mph to kn](https://atoneplace.net/convert/15-mph-to-knots/)
- [16 mph to kn](https://atoneplace.net/convert/16-mph-to-knots/)
- [17 mph to kn](https://atoneplace.net/convert/17-mph-to-knots/)
- [19 mph to kn](https://atoneplace.net/convert/19-mph-to-knots/)
- [20 mph to kn](https://atoneplace.net/convert/20-mph-to-knots/)
- [21 mph to kn](https://atoneplace.net/convert/21-mph-to-knots/)
- [22 mph to kn](https://atoneplace.net/convert/22-mph-to-knots/)

## 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/)