#### NOTE [Go to the end](#sphx-glr-download-auto-examples-readers-writers-plot-unit-conversion-py) to download the full example code. # Unit Conversion Convert [LAMMPS units](https://docs.lammps.org/units.html) to SI or other unit systems: **Supported unit styles:** - `real` - kcal/mol, Angstrom, fs - `metal` - eV, Angstrom, ps - `si` - kg, m, s - `nano` - attogram, nanometer, nanosecond - `lj` - Lennard-Jones reduced units (requires polymer specification) ```none /opt/hostedtoolcache/Python/3.12.6/x64/lib/python3.12/site-packages/pylimer_tools/io/unit_styles.py:177: UserWarning: LJ unit styles are derived. Reference used: https://doi.org/10.1021/acs.macromol.9b02428 warnings.warn( LJ 1 Pressure in Pascal: 101325.0 ```
```Python from pylimer_tools.io.unit_styles import UnitStyleFactory # Create unit style factory unit_factory = UnitStyleFactory() # Get unit conversion for specific LAMMPS unit style real_units = unit_factory.get_unit_style("real") metal_units = unit_factory.get_unit_style("metal") # For LJ units, specify the polymer lj_units = unit_factory.get_unit_style("lj", polymer="pdms") # Convert pressure from LAMMPS units to SI pressure_si = (1 * real_units.pressure).to("Pa").magnitude # type: ignore # Convert temperature (already in Kelvin for 'real' units) temperature_si = ( 273.15 * real_units.temperature).to("K").magnitude # type: ignore print(f"LJ 1 Pressure in Pascal: {pressure_si}") ``` **Total running time of the script:** (0 minutes 0.201 seconds) [`Download Jupyter notebook: plot_unit_conversion.ipynb`](_downloads/87b8395119e9cf38ac4c73f6c2755e19/plot_unit_conversion.ipynb) [`Download Python source code: plot_unit_conversion.py`](_downloads/19917ab26800d5ee8a8695afaa6982da/plot_unit_conversion.py) [`Download zipped: plot_unit_conversion.zip`](_downloads/f3cb55597e63e8125ea9ef6c49a4916b/plot_unit_conversion.zip) [Gallery generated by Sphinx-Gallery](https://sphinx-gallery.github.io)