Furlong to Fermi Converter
Convert Furlong (fur) to Fermi (fm) instantly. 1 fur = 2.011680e+17 fm.
Length Converter
31 units available
1 fur = 2.011680e+17 fm
Formula:
fm = fur × 2.011680e+17With your value: 1 fur = 2.011680e+17 fm
How big is that?
Everyday references on a logarithmic scale, all expressed in furlong so you can sanity-check the result.
Other Furlong to Fermi conversions
Furlong to Fermi Conversion Table
| Furlong (fur) | Fermi (fm) |
|---|---|
| 0.5 | 1.005840e+17 |
| 1 | 2.011680e+17 |
| 2 | 4.023360e+17 |
| 5 | 1.005840e+18 |
| 10 | 2.011680e+18 |
| 15 | 3.017520e+18 |
| 20 | 4.023360e+18 |
| 25 | 5.029200e+18 |
| 50 | 1.005840e+19 |
| 100 | 2.011680e+19 |
| 250 | 5.029200e+19 |
| 500 | 1.005840e+20 |
| 1000 | 2.011680e+20 |
Fermi to Furlong Conversion Table
| Fermi (fm) | Furlong (fur) |
|---|---|
| 0.5 | 2.485485e-18 |
| 1 | 4.970970e-18 |
| 2 | 9.941939e-18 |
| 5 | 2.485485e-17 |
| 10 | 4.970970e-17 |
| 15 | 7.456454e-17 |
| 20 | 9.941939e-17 |
| 25 | 1.242742e-16 |
| 50 | 2.485485e-16 |
| 100 | 4.970970e-16 |
| 250 | 1.242742e-15 |
| 500 | 2.485485e-15 |
| 1000 | 4.970970e-15 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Furlong (fur)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Fermi (fm)
Length
Traceable to the metre, defined by fixing the speed of light in vacuum at 299 792 458 m/s. Imperial lengths derive from the 1959 international yard (0.9144 m exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Furlong to Fermi
To convert from Furlong (fur) to Fermi (fm), multiply the value by 2.011680e+17.
Formula: fm = fur × 2.011680e+17
Reverse: fur = fm × 4.970970e-18
Step-by-Step Example
- Start with your value in Furlong. For example: 5 fur
- Multiply by the conversion factor: 5 x 2.011680e+17
- The result is: 1.005840e+18 fm
About Furlong
The furlong equals 220 yards (201.168 m), one eighth of a mile. It survives almost exclusively in horse racing.
Common uses: horse racing, historic land records.
About Fermi
The fermi (fm) is a unit of distance and length. One fermi equals 1.000000 × 10^-15 metres. UnitConvertLab converts it against every other length unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: length calculations, engineering and science, education.
Frequently Asked Questions
How many Fermi are in 1 Furlong?
There are exactly 2.011680e+17 Fermi in 1 Furlong. This means the conversion factor from Furlong to Fermi is 2.011680e+17.
What is the formula to convert Furlong to Fermi?
The formula to convert Furlong to Fermi is: fm = fur × 2.011680e+17. For example, to convert 10 Furlong to Fermi, you would multiply 10 by 2.011680e+17.
What is a Furlong?
The furlong equals 220 yards (201.168 m), one eighth of a mile. It survives almost exclusively in horse racing.
What is a Fermi?
The fermi (fm) is a unit of distance and length. One fermi equals 1.000000 × 10^-15 metres. UnitConvertLab converts it against every other length unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What are the common uses of Furlong?
The Furlong is commonly used in horse racing, historic land records.
Related Length Conversions
Cite this page
UnitConvertLab. (2026). Furlong to Fermi converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/furlong-to-fermi