To convert picas to furlongs, multiply by 2.104377104e-05. That factor is the whole relationship: both units measure length, so the conversion is a proportion with no offset and no substance-specific constant.
Ten chains, one eighth of a mile — the unit horse racing is still measured and bet in. Twelve points, or 1/6 inch — the column-width unit of print layout.
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". The tables underneath give both a plain step-by-step lookup and a list of real quantities expressed in furlongs, so you can sanity-check whether your answer is a plausible size.
The formula
picas- The amount you are converting, in picas
2.10437710438e-05- The exact number of furlongs in one pica
furlongs- The converted result
How it works, step by step
- Enter the value in picas.
- It is multiplied by 2.10437710438e-05, 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
The Eiffel Tower: 7.8e+04 pica in furlongs
The Eiffel Tower comes to about 7.8e+04 pica. Multiplying by the factor: 7.8e+04 × 2.10438e-05 = 1.64141 fur. Dividing the answer back by 2.10438e-05 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
An Olympic pool: 1.18e+04 pica in furlongs
At 1.18e+04 pica (an olympic pool), the same quantity in furlongs is 1.18e+04 × 2.10438e-05 = 0.248316 fur. One pica is 2.10438e-05 furlongs, so the numbers shrink as expected.
How to read your score
Frequently asked questions
How many furlongs are in one pica?
Exactly 2.10437710438e-05. 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 picas to furlongs?
furlongs = picas × 2.10437710438e-05. Reversed, picas = furlongs ÷ 2.10437710438e-05, which is the same as multiplying by 47,520.
Which is the bigger unit, the pica or the furlong?
The furlong. One pica is only 2.10438e-05 of a furlong, so it takes 47,520 picas to make one furlong.
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 pica?
Twelve points, or 1/6 inch — the column-width unit of print layout.
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.
Is there a quick way to do pica to fur in my head?
Plenty of people do this in their head: divide by 48,000 instead of using the exact factor 0.000021. At 100 that shortcut gives 0.0020833333 furlongs, off by 0.000021 furlongs or about 1.00%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Picas to furlongs reference tables
| Picas | Furlongs |
|---|---|
| 0.5 pica | 1.05219e-05 fur |
| 1 pica | 2.10438e-05 fur |
| 2 pica | 4.20875e-05 fur |
| 3 pica | 6.31313e-05 fur |
| 5 pica | 0.000105219 fur |
| 10 pica | 0.000210438 fur |
| 20 pica | 0.000420875 fur |
| 25 pica | 0.000526094 fur |
| 50 pica | 0.00105219 fur |
| 75 pica | 0.00157828 fur |
| 100 pica | 0.00210438 fur |
| 250 pica | 0.00526094 fur |
| 500 pica | 0.0105219 fur |
| 1000 pica | 0.0210438 fur |
| 5000 pica | 0.105219 fur |
Exact factor: 1 pica = 2.10437710438e-05 furlongs.
| Quantity | pica | fur |
|---|---|---|
| A credit card’s long edge | 20.22 pica | 0.0004255 fur |
| A door height | 480 pica | 0.0101 fur |
| An Olympic pool | 1.181e+04 pica | 0.2485 fur |
| The Eiffel Tower | 7.795e+04 pica | 1.64 fur |
| A marathon | 9.967e+06 pica | 209.8 fur |
| Earth’s diameter | 3.01e+09 pica | 6.334e+04 fur |
Published reference values, converted with the same factor this page uses.