UnitCloud is a calculation aid. Standards, contracts, medical decisions, engineering approvals and official requirements need original sources.
Unit console
用公式、语境和精度转换单位
UnitCloud 是面向日常、工程、IT、能源、交通和设计的本地测量实验室。
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Unit family
速度
Knots are nautical miles per hour. mph and knots are not interchangeable imperial speeds.
| Unit | Symbol | 公式 |
|---|---|---|
| Metres per second | m/s | base |
| Kilometres per hour | km/h | 1 km/h = 0.277777... m/s |
| Miles per hour | mph | 1 mph = 0.44704 m/s |
| Knot | kn | 1 kn = 0.514444... m/s |
| Feet per second | ft/s | 1 ft/s = 0.3048 m/s |
Knots are nautical miles per hour. mph and knots are not interchangeable imperial speeds.
来源
Search and practice paths
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公式表格Examples常见错误Everyday/engineeringExcel/CSV批量转换器Print view
Factors come from the stored source family and are not derived from rounded display values.
UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.
Do not use as the sole basis for official, medical, safety-critical or contractual decisions.
Citation note: UnitCloud, conversion with formula, sources current as of May 2026. 速度. Source basis: BIPM SI Brochure · NIST Guide to SI Appendix B.
Common questions
Which base unit does 速度 use?
UnitCloud normalises this family through m/s. That keeps tables, direct conversions and batch output consistent.
What is the most common mistake for 速度?
Knots are nautical miles per hour. mph and knots are not interchangeable imperial speeds.
How does UnitCloud round?
UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.
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