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To convert pm to meters: multiply by 10⁻¹². To convert pm to angstroms: divide by 100.
1 pm = 10⁻¹² m = 0.01 Å = 1,000 fm. One nanometer equals 1,000 picometers.
For example, 1 Picometer (pm) = 0.000001 Micrometer (µm).
| Picometer (pm) | Micrometer (µm) |
|---|---|
| 0.1 | 1.000000e-7 |
| 0.5 | 5.000000e-7 |
| 1 | 0.000001 |
| 2 | 0.000002 |
| 5 | 0.000005 |
| 10 | 0.00001 |
| 25 | 0.000025 |
| 50 | 0.00005 |
| 100 | 0.0001 |
| 500 | 0.0005 |
| 1000 | 0.001 |
The picometer is a unit of length equal to 10⁻¹² meters, or one trillionth of a meter.
1 pm = 10⁻¹² m = 0.01 Å = 1,000 fm. One nanometer equals 1,000 picometers.
To convert pm to meters: multiply by 10⁻¹². To convert pm to angstroms: divide by 100.
Expressing covalent bond lengths (e.g., C–C bond ≈ 154 pm), atomic radii, and crystal lattice spacings.
The hydrogen atom has a radius of about 53 pm (the Bohr radius), while a carbon-carbon single bond is about 154 pm long.
Mixing up picometers and nanometers — remember 1 nm = 1,000 pm. Some sources still use the deprecated angstrom.
Think of pm as the natural unit for atoms: most atomic radii fall between 30 pm and 300 pm.
The micrometer (micron) is a unit of length equal to 10⁻⁶ meters, or one millionth of a meter.
1 µm = 10⁻⁶ m = 1,000 nm = 0.001 mm. One millimeter equals 1,000 micrometers.
To convert µm to mm: divide by 1,000. To convert µm to inches: multiply by 3.937 × 10⁻⁵.
Measuring human hair thickness (~70 µm), red blood cells (~7 µm), bacteria (1–10 µm), and machining tolerances.
A typical bacterium is about 1–2 µm long, while a human red blood cell has a diameter of about 7 µm.
Writing 'um' instead of 'µm' in formal contexts. Also confusing micrometers (the unit) with micrometers (the measuring tool).
The limit of human vision is about 40 µm — anything smaller requires a microscope.



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