# pmm_tools.units

*module*

Physical unit conversions used by PMM simulations.

## pmm_tools.units.HBAR_UEV_NS

*attribute* · *module attribute*

```python
HBAR_UEV_NS = hbar / electron_volt * 1000000000000000.0
```

[View source](https://gitlab.kwant-project.org/qt/pmm_tools/-/blob/e412d66507a554f455ef935b755fc39f28ab4e05/pmm_tools/units.py#L6-L6)