Convert US Survey Foot to Nanometer
Convert us survey feet to nanometers instantly. 1 us survey foot = 3.048006e+8 nanometer — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Nanometer to US Survey Foot converter for the reverse conversion.
Units explained
US Survey Foot
The US Survey Foot is a legacy unit of length defined as exactly 1200/3937 meters (approximately 0.3048006 m). It differs from the modern international foot by about 2 parts per million.
Established in the United States by the Mendenhall Order of 1893, which defined the foot in terms of the meter as 1200/3937 m. The US continued using this value for surveying even after the 1959 International Yard and Pound Agreement standardized the international foot at exactly 0.3048 m.
Used in US land surveying, geodetic measurements, state plane coordinate systems, and legal land descriptions. The US Survey Foot was officially deprecated by NIST and NOAA effective December 31, 2022, with the international foot becoming the sole US standard. Legacy data and recorded land surveys still reference it.
Mendenhall Order of 1893 defined the foot as 1200/3937 m; persisted in US surveying after 1959; officially deprecated by NIST/NOAA as of December 31, 2022.
Nanometer
A nanometer is a metric unit of length equal to one billionth of a meter (1×10⁻⁹ m). It is the standard unit for measuring atomic and molecular dimensions and is widely used in physics, chemistry, and electronics.
Defined using the SI prefix nano- (from Greek nanos, "dwarf") to denote one-billionth, adopted by the General Conference on Weights and Measures (CGPM) in 1960.
Nanometers are used to measure wavelengths of visible light (400–700 nm), semiconductor transistor sizes (currently 3–5 nm process nodes), DNA double helix width (2 nm), and atomic radii. The 2019 SI redefinition fixed the meter to the speed of light, making nanometer definitions exact to atomic precision.
SI prefix nano- adopted by the CGPM in 1960; nanometer became the standard unit for nanotechnology and optical wavelengths during the late 20th century.
US Survey Foot to Nanometer conversion formula
Note: this conversion uses a generally accepted modern value. Historical and regional definitions of this unit varied across times and places.
The relationship between us survey feet and nanometers:
To convert us survey feet to nanometers, multiply the value in us survey feet by 3.048006e+8. To reverse, multiply nanometers by 3.280833e-9.
How to use this converter
Type a value into the calculator. The result in nanometers updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Nanometer to US Survey Foot converter for the reverse direction.
Step-by-step: convert us survey feet to nanometers
- Write down the value in us survey feet (sft).
- Multiply that value by the factor 3.048006e+8.
- The product is the equivalent value in nanometers (nm).
- To reverse, multiply the nanometer value by 3.280833e-9.
Worked examples
Example 1 — Convert 1 sft to nm:
1 × 3.048006e+8 = 3.048006e+8 nm
Example 2 — Convert 100 sft to nm:
100 × 3.048006e+8 = 3.048006e+10 nm
Real-world example — Meter to nanoscale
One us survey foot equals one billion nanometers. Physics curricula use this conversion to teach orders of magnitude when introducing the electromagnetic spectrum.
1 sft × 3.048006e+8 = 3.048006e+8 nm
Real-world example — Human-scale to atomic dimensions
One us survey foot equals one billion nanometers — the canonical metric conversion bridging everyday objects and atomic-scale features in physics, chemistry, and electronics.
1 sft × 3.048006e+8 = 3.048006e+8 nm
US Survey Foot to Nanometer conversion table
Standard reference values for converting us survey feet to nanometers:
| US Survey Foot [sft] | Nanometer [nm] |
|---|---|
| 0.01 | 3048006.0960121923 |
| 0.1 | 3.048006e+7 |
| 1 | 3.048006e+8 |
| 2 | 6.096012e+8 |
| 3 | 9.144018e+8 |
| 4 | 1.219202e+9 |
| 5 | 1.524003e+9 |
| 10 | 3.048006e+9 |
| 20 | 6.096012e+9 |
| 30 | 9.144018e+9 |
| 40 | 1.219202e+10 |
| 50 | 1.524003e+10 |
| 100 | 3.048006e+10 |
| 500 | 1.524003e+11 |
| 1000 | 3.048006e+11 |
Frequently asked questions
How many nanometers is 1 us survey foot?
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Sources & references
Conversion factor (1 sft = 3.048006e+8 nm) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.