100% Free — no sign-up, no limits Files processed in memory, never stored 184+ PDF, image, Office, developer & unit tools

MPH to Knots Converter

Convert MPH to Knots instantly: 1 mile/hour = 0.8689762419 knots. Free mph to knots converter with formula, chart and examples.

1 mile/hour = 0.8689762419 knots

All conversions

UnitSymbolValue

Quick answer

To convert MPH to Knots, multiply the number of miles/hour by 0.868976. For example, 10 MPH = 8.68976 Knots.

Last updated · Conversion factors follow the SI definitions in the BIPM SI Brochure and NIST SP 811.

How to Convert MPH to Knots

The formula is knots = miles/hour × 0.8689762419. 1 mile/hour = 0.8689762419 knots. Type any value in the converter above for an instant answer, or use the chart below for the most common values.

This page is preset for mile/hour to knot conversions, but you can switch either list to any of the 32 units in the Speed Converter, or go the other way with the Knots to MPH converter.

MPH to Knots conversion chart

MPHKnots
0.1 mph0.086897624 kn
0.25 mph0.21724406 kn
0.5 mph0.43448812 kn
1 mph0.86897624 kn
2 mph1.7379525 kn
3 mph2.6069287 kn
4 mph3.475905 kn
5 mph4.3448812 kn
6 mph5.2138575 kn
7 mph6.0828337 kn
8 mph6.9518099 kn
9 mph7.8207862 kn
10 mph8.6897624 kn
11 mph9.5587387 kn
12 mph10.427715 kn
13 mph11.296691 kn
14 mph12.165667 kn
15 mph13.034644 kn
16 mph13.90362 kn
17 mph14.772596 kn
18 mph15.641572 kn
19 mph16.510549 kn
20 mph17.379525 kn
25 mph21.724406 kn
30 mph26.069287 kn
40 mph34.75905 kn
50 mph43.448812 kn
60 mph52.138575 kn
70 mph60.828337 kn
75 mph65.173218 kn
80 mph69.518099 kn
90 mph78.207862 kn
100 mph86.897624 kn
150 mph130.34644 kn
200 mph173.79525 kn
250 mph217.24406 kn
500 mph434.48812 kn
1,000 mph868.97624 kn

Common MPH to Knots conversions

  • 1 mile/hour = 0.8689762419 knots
  • 10 mph = 8.6897624 kn
  • 30 mph = 26.069287 kn
  • 50 mph = 43.448812 kn
  • 100 mph = 86.897624 kn
  • 500 mph = 434.48812 kn

Popular speed converters

KM/H to MPHMPH to KM/HKnots to MPHM/S to KM/HKM/H to M/SKnots to KM/HM/S to MPH

How to Use the MPH to Knots Converter

  1. Type a value in the From box and choose its unit.
  2. Pick the unit you want in the To list — the result updates as you type.
  3. Use the swap button to reverse the conversion, or type in the To box to convert backwards.
  4. Check the All conversions table to see your value in every unit; click a row to make it the target.

Frequently Asked Questions

How many knots are in a mile/hour?

There are 0.8689762419 knots in 1 mile/hour. Going the other way, 1 knot = 1.150779448 miles/hour.

How do I convert MPH to Knots?

Use the formula knots = miles/hour × 0.8689762419. For example, 1 mile/hour = 0.8689762419 knots. Or type the value in the converter above and the answer appears as you type.

What is the MPH to Knots formula?

knots = miles/hour × 0.8689762419 — the factor is rounded to 10 significant figures, which is far more precise than everyday use needs.

What is 10 MPH in Knots?

10 MPH = 8.6897624 Knots.

What is 30 MPH in Knots?

30 MPH = 26.069287 Knots.

What is 50 MPH in Knots?

50 MPH = 43.448812 Knots.

What is 100 MPH in Knots?

100 MPH = 86.897624 Knots.

What is 500 MPH in Knots?

500 MPH = 434.48812 Knots.

How do I convert Knots back to MPH?

Use the swap button in the converter above, or open our Knots to MPH converter. miles/hour = knots × 1.150779448.

Is this MPH to Knots converter accurate?

Yes. It uses exact unit definitions and double-precision maths, and you can show up to 15 significant digits. The table below is calculated with the same formula.

Can I convert MPH to other speed units?

Yes — pick any unit in the From and To lists above, or open the full Speed Converter, which handles 32 speed units.

Is the MPH to Knots converter free?

Yes, it is free with no sign-up, and every conversion runs in your browser so nothing is sent to a server.