This page converts points into kilometers using the factor 3.527777778e-07, and shows the reverse figure alongside it. Both units measure length, which is why one number does the whole job.
The DTP point: exactly 1/72 inch, the unit type size is set in. One thousand metres — the standard road-distance unit almost everywhere outside the US and UK.
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 kilometers, so you can sanity-check whether your answer is a plausible size.
The formula
points- The amount you are converting, in points
3.52777777778e-07- The exact number of kilometers in one point
kilometers- The converted result
How it works, step by step
- Enter the value in points.
- It is multiplied by 3.52777777778e-07, the exact factor between the two units.
- The answer is shown in kilometers, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A credit card’s long edge: 243 pt in kilometers
At 243 pt (a credit card’s long edge), the same quantity in kilometers is 243 × 3.52778e-07 = 8.5725e-05 km. One point is 3.52778e-07 kilometers, so the numbers shrink as expected.
The Eiffel Tower: 9.35e+05 pt in kilometers
The Eiffel Tower comes to about 9.35e+05 pt. Multiplying by the factor: 9.35e+05 × 3.52778e-07 = 0.329847 km. Dividing the answer back by 3.52778e-07 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 kilometers are in one point?
Exactly 3.52777777778e-07. 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 points to kilometers?
kilometers = points × 3.52777777778e-07. Reversed, points = kilometers ÷ 3.52777777778e-07, which is the same as multiplying by 2,834,645.66929.
Which is the bigger unit, the point or the kilometer?
The kilometer. One point is only 3.52778e-07 of a kilometer, so it takes 2.83465e+06 points to make one kilometer.
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 point?
The DTP point: exactly 1/72 inch, the unit type size is set in.
What is a kilometer?
One thousand metres — the standard road-distance unit almost everywhere outside the US and UK.
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 pt to km in my head?
Plenty of people do this in their head: divide by 2800000.000000 instead of using the exact factor 0.000000. At 100 that shortcut gives 0.000036 kilometers, off by 0.000000 kilometers or about 1.24%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Points to kilometers reference tables
| Points | Kilometers |
|---|---|
| 0.5 pt | 1.76389e-07 km |
| 1 pt | 3.52778e-07 km |
| 2 pt | 7.05556e-07 km |
| 3 pt | 1.05833e-06 km |
| 5 pt | 1.76389e-06 km |
| 10 pt | 3.52778e-06 km |
| 20 pt | 7.05556e-06 km |
| 25 pt | 8.81944e-06 km |
| 50 pt | 1.76389e-05 km |
| 75 pt | 2.64583e-05 km |
| 100 pt | 3.52778e-05 km |
| 250 pt | 8.81944e-05 km |
| 500 pt | 0.000176389 km |
| 1000 pt | 0.000352778 km |
| 5000 pt | 0.00176389 km |
Exact factor: 1 point = 3.52777777778e-07 kilometers.
| Quantity | pt | km |
|---|---|---|
| A credit card’s long edge | 242.6 pt | 8.56e-05 km |
| A door height | 5760 pt | 0.002032 km |
| An Olympic pool | 1.417e+05 pt | 0.05 km |
| The Eiffel Tower | 9.354e+05 pt | 0.33 km |
| A marathon | 1.196e+08 pt | 42.2 km |
| Earth’s diameter | 3.612e+10 pt | 1.274e+04 km |
Published reference values, converted with the same factor this page uses.