Millibar to mean free path
Type a value in mbar to get it in m instantly.
66,500m
That's about the same as high vacuum. That is about 9.869×10⁻⁸% of atmospheric pressure still in there.
What it means
How empty is it?
Molecule counts and mean free paths are for air at 20 °C. A gauge reading also depends on which gas it was calibrated for.
The math
How to convert mbar to m
Molecule count is proportional to pressure — 2.47 × 10¹⁶ per cm³ per mbar at 20 °C — while the mean free path is inversely proportional: 66.5 µm ÷ mbar.
Example: 1×10⁻⁶ mbar = 66,500 m.
Every unit
Your vacuum in every unit
Tables
mbar to m conversion table
| mbar | m |
|---|---|
| 1,013 mbar | 6.565×10⁻⁵ m |
| 1 mbar | 0.0665 m |
| 0.001 mbar | 66.5 m |
| 1×10⁻⁵ mbar | 6,650 m |
| 1×10⁻⁶ mbar | 66,500 m |
| 1×10⁻⁷ mbar | 665,000 m |
| 1×10⁻⁹ mbar | 66,500,000 m |
| 1×10⁻¹¹ mbar | 6.65×10⁹ m |
| 1×10⁻¹³ mbar | 6.65×10¹¹ m |
m to mbar conversion table
| m | mbar |
|---|---|
| 1,013 m | 6.565×10⁻⁵ mbar |
| 1 m | 0.0665 mbar |
| 0.001 m | 66.5 mbar |
| 1×10⁻⁵ m | 6,650 mbar |
| 1×10⁻⁶ m | 66,500 mbar |
| 1×10⁻⁷ m | 665,000 mbar |
| 1×10⁻⁹ m | 66,500,000 mbar |
| 1×10⁻¹¹ m | 6.65×10⁹ mbar |
| 1×10⁻¹³ m | 6.65×10¹¹ mbar |
Quick answers
Quick answers
- How many m is 1 mbar?
- 1 mbar is 0.0665 m.
- How many m is 10 mbar?
- 10 mbar is 0.00665 m.
- How many m is 1×10⁻⁶ mbar?
- 1×10⁻⁶ mbar is 66,500 m.
The units
About these units
Millibar (mbar)
The European standard for vacuum work.
Mean free path (m)
How far a molecule travels before hitting another one.
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