Convert

Knot to Miles per hour

Exact answer: 1 kn = 1.150779448024 mph (exact defined factor)

Knot and Miles per hour describe the same quantity from the Speed family but come from different systems of units. The factor is defined exactly. Speed appears in vehicle data, sports figures, weather reports and shipping.

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What do you want to convert?

From1 kn

Result1.150779 mph

Factor1 kn = 1.150779448024 mph

Source basisBIPM SI Brochure · NIST Guide to SI Appendix B

Examples

011 kn = 1.150779 mph

Example value from the reference table. Internal calculation uses stored factors; display output is rounded.

02Common mistake

Knots are nautical miles per hour. mph and knots are not interchangeable imperial speeds.

03Base unit: m/s

1 kn = 0.514444444444 m/s. Then the value is converted through the base unit m/s into Miles per hour.

Table

Knot to Miles per hour
Knot	Miles per hour
1	1.150779
5	5.753897
10	11.507794
20	23.015589
50	57.538972
100	115.077945

Formula

1 kn = 0.514444444444 m/s. Then the value is converted through the base unit m/s into Miles per hour.

Sources

BIPM SI BrochureSI base units, prefixes and official SI context.NIST Guide to SI Appendix BNIST conversion-factor method and non-SI factors.

Related conversions

Knot to Kilometres per hourkn → km/hSpeed Kilometres per hour to Knotkm/h → knSpeed Miles per hour to Kilometres per hourmph → km/hSpeed Kilometres per hour to Miles per hourkm/h → mphSpeed

Search and practice paths

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Factor origin

Factors come from the stored source family and are not derived from rounded display values.

Rounding rule

UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.

When not to use

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.

Citation

Citation note: UnitCloud, conversion with formula, sources reviewed: September 2026. Speed. Source basis: BIPM SI Brochure · NIST Guide to SI Appendix B.

Common questions

What is the factor for Knot to Miles per hour?

1 kn = 1.150779448024 mph

Which formula does Knot to Miles per hour use?

1 kn = 0.514444444444 m/s. Then the value is converted through the base unit m/s into Miles per hour.

What is the most common mistake?

Knots are nautical miles per hour. mph and knots are not interchangeable imperial speeds.

When should I verify the result?

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.