US Survey Feet to Nautical Miles
Convert us survey feet to nautical miles instantly. 1 ft-us = 0.0001645792 nmi. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert us survey feet to nautical miles
To convert us survey feet to nautical miles, divide by 6076.1033333333 (multiply by 0.0001645792). The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
nmi = ft-us × 0.0001645792
US Survey Feet to Nautical Miles conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| US Survey Feet | Nautical Miles |
|---|---|
| 1 ft-us | 0.0001646 nmi |
| 2 ft-us | 0.0003292 nmi |
| 3 ft-us | 0.0004937 nmi |
| 5 ft-us | 0.0008229 nmi |
| 10 ft-us | 0.001646 nmi |
| 20 ft-us | 0.003292 nmi |
| 25 ft-us | 0.004114 nmi |
| 50 ft-us | 0.008229 nmi |
| 100 ft-us | 0.016458 nmi |
| 500 ft-us | 0.08229 nmi |
| 1,000 ft-us | 0.164579 nmi |
What is a us survey feet?
The pre-2023 US surveying foot, longer than the international foot by 2 ppm.
What is a nautical mile?
One minute of latitude, fixed at exactly 1,852 m. Used at sea and in the air.
The formula
nmi = ft-us × 0.0001645792
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the US Survey Feet to Nautical Miles
- Type the number of us survey feet you want to convert.
- Read the result in nautical miles straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked nautical miles to us survey feet page.
US Survey Feet to Nautical Miles — frequently asked questions
How many nautical miles are in a us survey feet?
One us survey feet equals 0.0001645792 nmi. nmi = ft-us × 0.0001645792
What is the formula to convert us survey feet to nautical miles?
The formula is nmi = ft-us × 0.0001645792. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert nautical miles back to us survey feet?
Divide instead of multiplying: one nautical mile is 6076.1033333333 ft-us. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this us survey feet to nautical miles free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 15, 2026 · Calculation runs client-side · No data collected · Report an error