This page converts miles into furlongs using the factor 8, and shows the reverse figure alongside it. Both units measure length, which is why one number does the whole job.
The statute mile: 5,280 feet, used for road distance in the US, UK and a handful of others. Ten chains, one eighth of a mile — the unit horse racing is still measured and bet in.
The mil and the millimetre are not the same thing and are out by a factor of about forty. A mil is one thousandth of an inch — 0.0254 mm — and a spec sheet that quotes film thickness in mils means the small unit. British drawings write the same size as "thou". Below the calculator there is a step table for the values people look up most, and a second table putting real length figures into furlongs so the number you get has something to be compared against.
The formula
miles- The amount you are converting, in miles
8- The exact number of furlongs in one mile
furlongs- The converted result
How it works, step by step
- Enter the value in miles.
- It is multiplied by 8, the exact factor between the two units.
- The answer is shown in furlongs, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A marathon: 26.2 mi in furlongs
At 26.2 mi (a marathon), the same quantity in furlongs is 26.2 × 8 = 209.6 fur. One mile is 8 furlongs, so the numbers grow as expected.
A door height: 0.00126 mi in furlongs
A door height comes to about 0.00126 mi. Multiplying by the factor: 0.00126 × 8 = 0.01008 fur. Dividing the answer back by 8 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
How to read your score
Frequently asked questions
How many furlongs are in one mile?
Exactly 8. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert miles to furlongs?
furlongs = miles × 8. Reversed, miles = furlongs ÷ 8, which is the same as multiplying by 0.125.
Which is the bigger unit, the mile or the furlong?
The mile. One mile equals 8 furlongs.
What does this quantity actually measure?
Both units measure length. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a mile?
The statute mile: 5,280 feet, used for road distance in the US, UK and a handful of others.
What is a furlong?
Ten chains, one eighth of a mile — the unit horse racing is still measured and bet in.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Miles to furlongs reference tables
| Miles | Furlongs |
|---|---|
| 0.5 mi | 4 fur |
| 1 mi | 8 fur |
| 2 mi | 16 fur |
| 3 mi | 24 fur |
| 5 mi | 40 fur |
| 10 mi | 80 fur |
| 20 mi | 160 fur |
| 25 mi | 200 fur |
| 50 mi | 400 fur |
| 75 mi | 600 fur |
| 100 mi | 800 fur |
| 250 mi | 2000 fur |
| 500 mi | 4000 fur |
| 1000 mi | 8000 fur |
| 5000 mi | 40,000 fur |
Exact factor: 1 mile = 8 furlongs.
| Quantity | mi | fur |
|---|---|---|
| A credit card’s long edge | 5.319e-05 mi | 0.0004255 fur |
| A door height | 0.001263 mi | 0.0101 fur |
| An Olympic pool | 0.03107 mi | 0.2485 fur |
| The Eiffel Tower | 0.2051 mi | 1.64 fur |
| A marathon | 26.22 mi | 209.8 fur |
| Earth’s diameter | 7918 mi | 6.334e+04 fur |
Published reference values, converted with the same factor this page uses.