Millibar to molecules per cubic centimeter
Type a value in mbar to get it in cm⁻³ instantly.
2.472×10¹⁰cm⁻³
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 cm⁻³
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 = 2.472×10¹⁰ cm⁻³.
Every unit
Your vacuum in every unit
Tables
mbar to cm⁻³ conversion table
| mbar | cm⁻³ |
|---|---|
| 1,013 mbar | 2.504×10¹⁹ cm⁻³ |
| 1 mbar | 2.472×10¹⁶ cm⁻³ |
| 0.001 mbar | 2.472×10¹³ cm⁻³ |
| 1×10⁻⁵ mbar | 2.472×10¹¹ cm⁻³ |
| 1×10⁻⁶ mbar | 2.472×10¹⁰ cm⁻³ |
| 1×10⁻⁷ mbar | 2.472×10⁹ cm⁻³ |
| 1×10⁻⁹ mbar | 24,715,000 cm⁻³ |
| 1×10⁻¹¹ mbar | 247,150 cm⁻³ |
| 1×10⁻¹³ mbar | 2,471.5 cm⁻³ |
cm⁻³ to mbar conversion table
| cm⁻³ | mbar |
|---|---|
| 1,013 cm⁻³ | 4.099×10⁻¹⁴ mbar |
| 1 cm⁻³ | 4.046×10⁻¹⁷ mbar |
| 0.001 cm⁻³ | 4.046×10⁻²⁰ mbar |
| 1×10⁻⁵ cm⁻³ | 4.046×10⁻²² mbar |
| 1×10⁻⁶ cm⁻³ | 4.046×10⁻²³ mbar |
| 1×10⁻⁷ cm⁻³ | 4.046×10⁻²⁴ mbar |
| 1×10⁻⁹ cm⁻³ | 4.046×10⁻²⁶ mbar |
| 1×10⁻¹¹ cm⁻³ | 4.046×10⁻²⁸ mbar |
| 1×10⁻¹³ cm⁻³ | 4.046×10⁻³⁰ mbar |
Quick answers
Quick answers
- How many cm⁻³ is 1 mbar?
- 1 mbar is 2.472×10¹⁶ cm⁻³.
- How many cm⁻³ is 10 mbar?
- 10 mbar is 2.472×10¹⁷ cm⁻³.
- How many cm⁻³ is 1×10⁻⁶ mbar?
- 1×10⁻⁶ mbar is 2.472×10¹⁰ cm⁻³.
The units
About these units
Millibar (mbar)
The European standard for vacuum work.
Molecules per cubic centimeter (cm⁻³)
How much gas is actually left in the chamber.
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