diff --git a/common/python/nomadcore/unit_conversion/units.txt b/common/python/nomadcore/unit_conversion/units.txt
index c53b9bb6b04356bfb50b412c2b3d25d42ae811f6..5df13553f02e16aa6727854590ed7863ad91897d 100644
--- a/common/python/nomadcore/unit_conversion/units.txt
+++ b/common/python/nomadcore/unit_conversion/units.txt
@@ -266,3 +266,6 @@ rhe = 10 / (Pa * s)
 
 # Volume
 [volume] = [length] ** 3
+
+# Magnetic moment
+mubohr = 9.274009994e-24 J / T