How to Convert Chi (Chinese foot) to Nautical miles (chi to nmi)
Length conversions come up when reading overseas furniture specs, cycling the Round Island Route in kilometres while a foreign app shows miles, or checking marine distances in the Singapore Strait in nautical miles. This guide shows how to convert chi (chinese foot) into nautical miles by hand, with examples and a quick-reference table.
The conversion
To convert chi (chinese foot) to nautical miles, multiply the value by 0.0001799856. To go the other way, divide by the same number (or multiply by 5,556). Because the factor is tiny, scientific notation keeps the numbers manageable.
Nautical miles = chi (chinese foot) × 0.0001799856
Worked examples
- 3 chi = 0.00054 nmi
- 12.5 chi = 0.00225 nmi
- 75 chi = 0.013499 nmi
Chi (Chinese foot) to Nautical miles table
| Chi (Chinese foot) | Nautical miles |
|---|---|
| 1 chi | 0.00018 nmi |
| 2 chi | 0.00036 nmi |
| 5 chi | 0.0009 nmi |
| 10 chi | 0.0018 nmi |
| 20 chi | 0.0036 nmi |
| 25 chi | 0.0045 nmi |
| 50 chi | 0.008999 nmi |
| 100 chi | 0.017999 nmi |
| 250 chi | 0.044996 nmi |
| 500 chi | 0.089993 nmi |
| 1,000 chi | 0.179986 nmi |
Common questions
Is chi to nmi exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Nautical miles to Chi (Chinese foot) converter.
Mistakes to avoid
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Background
A conversion table is handy for common values, but a calculator is faster and avoids interpolation errors for anything in between.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
For any value, use the Chi (Chinese foot) to Nautical miles Converter or browse all length converters.
Run your own numbers: Chi (Chinese foot) to Nautical miles Converter