Length and Area
fttonm
Convert feet (ft) to nanometres (nm).
Factor1 ft = 3.048e+8 nm
Converter
ft
Accepts numbers or expressions, e.g. 150 + 14.7
Result
nm
Rendered to 6 significant figures.
Formula
Formula
nm = ft × 3.048e+8
Multiply any value in feet by 3.048e+8 to obtain the value in nanometres.
Worked example
Convert 1 ft to nm.
- 01Start with 1 ft.
- 02Multiply by the conversion factor: 1 × 3.048e+8 = 3.048e+8 nm.
Result1 ft = 3.048e+8 nm
Conversion table
| ft | nm |
|---|---|
| 1 | 3.048e+8 |
| 2 | 6.096e+8 |
| 5 | 1.524e+9 |
| 10 | 3.048e+9 |
| 20 | 6.096e+9 |
| 50 | 1.524e+10 |
| 100 | 3.048e+10 |
| 200 | 6.096e+10 |
| 500 | 1.524e+11 |
| 1000 | 3.048e+11 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from ft to nm?
1 ft equals 3.048e+8 nm. To convert, multiply the value in feet by 3.048e+8.
How do I convert 1 ft to nm?
1 ft = 3.048e+8 nm. For any value, multiply by 3.048e+8.
How do I convert nm back to ft?
Divide by the same factor — or equivalently, multiply by 3.28084e-9. So 1 nm = 3.28084e-9 ft.
When would I need to convert foot to nanometre?
Length conversions appear in piping, layout, and mechanical drawings — particularly when reconciling imperial fittings or instrument lengths with metric plant drawings.
Is the conversion exact?
Yes. Both ft and nm are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).