Picometers to Bohr radii
Type a value in pm to get it in a₀ instantly.
0.0189a₀
That's 137× as long as a gold nucleus, while a hydrogen atom (Bohr radius) is 53× longer.
What it means
How small is that?
Atoms have no sharp edge; radii depend on how they are measured (covalent, van der Waals, ionic).
The math
How to convert pm to a₀
To convert picometers to Bohr radii, multiply by 0.0188973.
Example: 1 pm × 0.0188973 = 0.0188973 a₀.
In the other direction, 1 a₀ = 52.9177 pm.
Every unit
That length in every unit
Tables
pm to a₀ conversion table
| pm | a₀ |
|---|---|
| 0.1 pm | 0.00188973 a₀ |
| 0.5 pm | 0.00944863 a₀ |
| 0.74 pm | 0.013984 a₀ |
| 1 pm | 0.0188973 a₀ |
| 1.09 pm | 0.020598 a₀ |
| 1.2 pm | 0.0226767 a₀ |
| 1.4 pm | 0.0264562 a₀ |
| 1.54 pm | 0.0291018 a₀ |
| 2 pm | 0.0377945 a₀ |
| 2.5 pm | 0.0472432 a₀ |
| 3 pm | 0.0566918 a₀ |
| 3.5 pm | 0.0661404 a₀ |
| 5 pm | 0.0944863 a₀ |
| 10 pm | 0.188973 a₀ |
a₀ to pm conversion table
| a₀ | pm |
|---|---|
| 0.1 a₀ | 5.29177 pm |
| 0.5 a₀ | 26.4589 pm |
| 0.74 a₀ | 39.1591 pm |
| 1 a₀ | 52.9177 pm |
| 1.09 a₀ | 57.6803 pm |
| 1.2 a₀ | 63.5013 pm |
| 1.4 a₀ | 74.0848 pm |
| 1.54 a₀ | 81.4933 pm |
| 2 a₀ | 105.835 pm |
| 2.5 a₀ | 132.294 pm |
| 3 a₀ | 158.753 pm |
| 3.5 a₀ | 185.212 pm |
| 5 a₀ | 264.589 pm |
| 10 a₀ | 529.177 pm |
Quick answers
Quick answers
- How many a₀ is 1 pm?
- 1 pm is 0.0188973 a₀.
- How many a₀ is 10 pm?
- 10 pm is 0.188973 a₀.
The units
About these units
Picometers (pm)
Trillionths of a meter.
Bohr radii (a₀)
The atomic unit of length: 52.9 pm.
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