Millimeter is 0.001 meter units.
Millimeters to US survey feet Converter — mm to ftUS
Convert Millimeter (mm) to US survey foot (ftUS) using the exact conversion factor (1 millimeter = 0.0032808333 us survey foot). See the formula, worked examples, conversion table, history, and common uses.
Millimeters to US survey 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.
The US survey foot is 1200/3937 meters and is retained for legacy land records.
Result = input x 0.001 / 0.3048006096.
Length uses the meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Millimeters to US survey feet
Millimeter and US survey foot both measure length. Millimeter is most often used for engineering drawings and manufacturing tolerances worldwide (including in the us).
Formula
us survey feet = millimeters × 0.00328083333333
This factor comes from each unit's defined relationship to the category's base unit: 1 millimeter equals 0.001 base units, and 1 us survey foot equals 0.304800609601 base units, so dividing one by the other gives the direct millimeter-to-us survey foot factor of 0.00328083333333.
Simple example
1 mm × 0.003280833333 = 0.0032808333 ftUS
1 millimeter = 0.0032808333 us survey feet.
Real-world example
10 mm × 0.003280833333 = 0.0328083333 ftUS
10 millimeters = 0.0328083333 us survey feet.
Conversion table
| Millimeter (mm) | US survey foot (ftUS) |
|---|---|
| 1 mm | 0.0032808333 ftUS |
| 5 mm | 0.0164041667 ftUS |
| 10 mm | 0.0328083333 ftUS |
| 21.0975 mm | 0.0692173813 ftUS |
| 42.195 mm | 0.1384347625 ftUS |
| 100 mm | 0.3280833333 ftUS |
Reverse conversion: US survey foot to Millimeter
0.0032808333 ftUS × 304.8006096 = 0.9999999898 mm
0.0032808333 us survey feet = 0.9999999898 millimeters.
millimeters = us survey feet × 304.800609601
For a page dedicated to this direction, see US survey foot to Millimeter.
Understanding the Millimeter
Millimeter (mm) measures distance. A millimeter is one-thousandth of a meter. It is classified as a SI derived (metric prefix) unit.
Where it's used: Standard small/precision length unit worldwide, including in US engineering and manufacturing
Uses of the Millimeter today
- Engineering drawings and manufacturing tolerances worldwide (including in the US)
- Rainfall measurement in most countries
- Small-scale everyday measurement (screen sizes, hardware)
History of the Millimeter
The millimeter follows from the meter via the 'milli-' SI prefix (10⁻³). It is notable as one of the few metric units in routine US technical/engineering use, since precision manufacturing and electronics are often specified in millimeters even in the US.
Historical origin. Millimeter was not the invention of a single named person; it developed through the process described above.
Understanding the US survey foot (ftUS)
The US survey foot is 1200/3937 meters and is retained for legacy land records.
Millimeter — sources
- BIPM SI Brochure — SI prefixes — Defines 'milli-' as the prefix for 10⁻³.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many us survey feet are in 1 millimeter?
1 millimeter equals 0.0032808333 us survey feet, using the exact defined conversion factor rather than an estimate.
How do I convert millimeter to us survey foot?
Multiply the millimeter value by 0.003280833333. The converter above does this instantly to whatever precision you set.
How do I convert us survey foot back to millimeter?
Use the reverse factor: 1 us survey foot equals 304.8006096 millimeters. You can also use the swap control in the converter above to flip the direction instantly.
What is a millimeter?
Millimeter (mm) measures distance. A millimeter is one-thousandth of a meter. It is classified as a SI derived (metric prefix) unit.
What is a us survey foot?
US survey foot (ftUS) is a unit of length.
Is the millimeter to us survey foot conversion exact?
Yes. Both millimeter and us survey foot are defined by fixed standards rather than physical artifacts, so the factor of 0.003280833333 used above is exact to as many digits as you choose to display.
Where is the millimeter still used today?
Standard small/precision length unit worldwide, including in US engineering and manufacturing