Mph to knots
Converts mph to kt using exact unit definitions.
120 mph is 104.27715 kt.
- Input
Provenance
- Computed by
- units.speed.mph-to-kt 1.0.0, core 0.1.0
- Model
- Exact unit definitions
- Accuracy
- Exact to double precision: each conversion is one correctly rounded ratio of exact definitions
- Notes
- None
- Cites
- National Institute of Standards and Technology, Guide for the Use of the International System of Units (SI), NIST Special Publication 811; International Civil Aviation Organization, Annex 5 to the Convention on International Civil Aviation: Units of Measurement to be Used in Air and Ground Operations
Something look off?
How we got thisFormula, worked example, sources, and proof
Model: Exact unit definitions
Accuracy: Exact to double precision: each conversion is one correctly rounded ratio of exact definitions
Worked example: 120 mph in kt. Source: Exact unit definitions (NIST SP 811 Appendix B). It is golden test vector v001, and every build checks the tool still gives its answer within its tolerance.
You enter
- Value
- 120 mph
You get
- Converted
- 104.27715 kt
- Input
- 120 mph
Review: Not yet independently reviewed by a metrologist.
Last verified: 2026-09-18, when a maintainer last confirmed this tool's sources at the issuer. See the sources ledger.
Status: version 1.0.0, core 0.1.0. See this tool in the verification report.
Checked against: 3 golden test vectors (download the test vectors, each with its source and tolerance). See how results are checked and every source.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, National Institute of Standards and Technology, 2008 edition. Appendix B.8, Factors for units listed alphabetically.
- Annex 5 to the Convention on International Civil Aviation: Units of Measurement to be Used in Air and Ground Operations, International Civil Aviation Organization, 5th edition. Chapter 3 and Table 3-3. Paid only.