One picometer is exactly 1.000000000e-12 meters, so converting picometers to meters is a single multiplication. Enter any figure and the result appears as you type — the arithmetic runs in your browser, so nothing is sent anywhere.
The SI base unit of length, defined by the distance light travels in 1/299,792,458 of a second. One trillionth of a metre, the SI unit crystallographers use where chemists still reach for angstroms.
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 meters, so you can sanity-check whether your answer is a plausible size.
The formula
picometers- The amount you are converting, in picometers
1.00000000000e-12- The exact number of meters in one picometer
meters- The converted result
How it works, step by step
- Enter the value in picometers.
- It is multiplied by 1.00000000000e-12, the exact factor between the two units.
- The answer is shown in meters, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A larger figure: 100 pm in meters
A larger figure comes to about 100 pm. Multiplying by the factor: 100 × 1.00000e-12 = 1.00000e-10 m. Dividing the answer back by 1.00000e-12 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
A round figure: 1 pm in meters
A round figure comes to about 1 pm. Multiplying by the factor: 1 × 1.00000e-12 = 1.00000e-12 m. Dividing the answer back by 1.00000e-12 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 meters are in one picometer?
Exactly 1.00000000000e-12. 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 picometers to meters?
meters = picometers × 1.00000000000e-12. Reversed, picometers = meters ÷ 1.00000000000e-12, which is the same as multiplying by 1e+12.
Which is the bigger unit, the picometer or the meter?
The meter. One picometer is only 1.00000e-12 of a meter, so it takes 1e+12 picometers to make one meter.
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 picometer?
One trillionth of a metre, the SI unit crystallographers use where chemists still reach for angstroms.
What is a meter?
The SI base unit of length, defined by the distance light travels in 1/299,792,458 of a second.
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.
Picometers to meters reference tables
| Picometers | Meters |
|---|---|
| 0.5 pm | 5.00000e-13 m |
| 1 pm | 1.00000e-12 m |
| 2 pm | 2.00000e-12 m |
| 3 pm | 3.00000e-12 m |
| 5 pm | 5.00000e-12 m |
| 10 pm | 1.00000e-11 m |
| 20 pm | 2.00000e-11 m |
| 25 pm | 2.50000e-11 m |
| 50 pm | 5.00000e-11 m |
| 75 pm | 7.50000e-11 m |
| 100 pm | 1.00000e-10 m |
| 250 pm | 2.50000e-10 m |
| 500 pm | 5.00000e-10 m |
| 1000 pm | 1e-09 m |
| 5000 pm | 5e-09 m |
Exact factor: 1 picometer = 1.00000000000e-12 meters.
| Quantity | pm | m |
|---|---|---|
| A credit card’s long edge | 8.56e+10 pm | 0.0856 m |
| A door height | 2.032e+12 pm | 2.032 m |
| An Olympic pool | 5e+13 pm | 50 m |
| The Eiffel Tower | 3.3e+14 pm | 330 m |
| A marathon | 4.220e+16 pm | 4.22e+04 m |
| Earth’s diameter | 1.274e+19 pm | 1.274e+07 m |
Published reference values, converted with the same factor this page uses.