The US survey foot is 1200/3937 meters and is retained for legacy land records.
US survey feet to Feet Converter — ftUS to ft
Convert US survey foot (ftUS) to Foot (ft) using the exact conversion factor (1 us survey foot = 1.000002 foot). See the formula, worked examples, conversion table, history, and common uses.
US survey feet to Feet converter
Converter
Length Converter
Convert SI, imperial, US customary, astronomical, scientific, and historical length units.
Context values
Some unit families need one extra value for a physically accurate result.
A foot is exactly 0.3048 meters.
Result = input x 0.3048006096 / 0.3048.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting US survey feet to Feet
US survey foot and Foot both measure length. Specifically: The US survey foot is 1200/3937 meters and is retained for legacy land records, and a foot is exactly 0.3048 meters.
Formula
feet = us survey feet × 1.000002
This factor comes from each unit's defined relationship to the category's base unit: 1 us survey foot equals 0.304800609601 base units, and 1 foot equals 0.3048 base units, so dividing one by the other gives the direct us survey foot-to-foot factor of 1.000002.
Simple example
1 ftUS × 1.000002 = 1.000002 ft
1 us survey foot = 1.000002 feet.
Real-world example
10 ftUS × 1.000002 = 10.00002 ft
10 us survey feet = 10.00002 feet.
Conversion table
| US survey foot (ftUS) | Foot (ft) |
|---|---|
| 1 ftUS | 1.000002 ft |
| 5 ftUS | 5.00001 ft |
| 10 ftUS | 10.00002 ft |
| 21.0975 ftUS | 21.0975422 ft |
| 42.195 ftUS | 42.19508439 ft |
| 100 ftUS | 100.0002 ft |
Reverse conversion: Foot to US survey foot
1.000002 ft × 0.999998 = 1 ftUS
1.000002 feet = 1 us survey feet.
us survey feet = feet × 0.999998
For a page dedicated to this direction, see Foot to US survey foot.
Understanding the US survey foot (ftUS)
The US survey foot is 1200/3937 meters and is retained for legacy land records.
Understanding the Foot
Foot (ft) measures distance. The international foot is defined as exactly 0.3048 meters. It is classified as a US/imperial customary unit.
Where it's used: United States (height, construction, aviation altitude) United Kingdom (height, some construction contexts)
Uses of the Foot today
- Height measurement in the US and UK
- US construction and real estate (square footage)
- Aviation altitude worldwide (feet remain standard even in metric countries)
History of the Foot
The foot has ancient roots (Roman 'pes', various regional English feet), standardized into the modern English foot over centuries. The international foot (exactly 0.3048 m) was fixed by the 1959 International Yard and Pound Agreement, resolving small historical differences between US and UK measurements.
Historical origin. Foot was not the invention of a single named person; it developed through the process described above.
Foot — sources
- NIST — International yard and pound (1959) — Fixes the modern foot at exactly 0.3048 meters.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many feet are in 1 us survey foot?
1 us survey foot equals 1.000002 feet, using the exact defined conversion factor rather than an estimate.
How do I convert us survey foot to foot?
Multiply the us survey foot value by 1.000002. The converter above does this instantly to whatever precision you set.
How do I convert foot back to us survey foot?
Use the reverse factor: 1 foot equals 0.999998 us survey feet. You can also use the swap control in the converter above to flip the direction instantly.
What is a us survey foot?
US survey foot (ftUS) is a unit of length.
What is a foot?
Foot (ft) measures distance. The international foot is defined as exactly 0.3048 meters. It is classified as a US/imperial customary unit.
Is the us survey foot to foot conversion exact?
Yes. The international foot is defined as exactly 0.3048 meters. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.