diff --git a/MSMetaEnhancer/libs/converters/compute/RDKit.py b/MSMetaEnhancer/libs/converters/compute/RDKit.py
index e91bd50..58c74dc 100644
--- a/MSMetaEnhancer/libs/converters/compute/RDKit.py
+++ b/MSMetaEnhancer/libs/converters/compute/RDKit.py
@@ -21,6 +21,8 @@ def __init__(self):
             ("smiles", "mw", "from_smiles"),
             ("canonical_smiles", "mw", "from_smiles"),
             ("isomeric_smiles", "mw", "from_smiles"),
+            ("canonical_smiles", "formula", "smiles_to_formula"),
+            ("isomeric_smiles", "formula", "smiles_to_formula"),
         ]
         self.create_top_level_conversion_methods(conversions, asynch=False)
 
diff --git a/tests/test_rdkit.py b/tests/test_rdkit.py
index c6562b5..74c8cf5 100644
--- a/tests/test_rdkit.py
+++ b/tests/test_rdkit.py
@@ -5,6 +5,7 @@
 
 INCHI = "InChI=1S/C19H28O2/c1-18-9-7-13(20)11-12(18)3-4-14-15-5-6-17(21)19(15,2)10-8-16(14)18/h11,14-17,21H,3-10H2,1-2H3/t14-,15-,16-,17-,18-,19-/m0/s1"
 CANONICAL_SMILES = "CC12CCC(=O)C=C1CCC1C2CCC2(C)C(O)CCC12"
+ISOMERIC_SMILES = "C[C@]12CC[C@H]3[C@@H](CCC4=CC(=O)CC[C@@]43C)[C@@H]1CC[C@@H]2O"
 
 
 @pytest.mark.parametrize(
@@ -14,13 +15,13 @@
         [
             "inchi_to_isomeric_smiles",
             INCHI,
-            {
-                "isomeric_smiles": "C[C@]12CC[C@H]3[C@@H](CCC4=CC(=O)CC[C@@]43C)[C@@H]1CC[C@@H]2O"
-            },
+            {"isomeric_smiles": ISOMERIC_SMILES},
         ],
         ["from_smiles", CANONICAL_SMILES, {"mw": 288.208930136}],
         ["formula_to_mw", "C9H15N4O8P", {"mw": 338.21299999999997}],
         ["smiles_to_formula", CANONICAL_SMILES, {"formula": "C19H28O2"}],
+        ["canonical_smiles_to_formula", CANONICAL_SMILES, {"formula": "C19H28O2"}],
+        ["isomeric_smiles_to_formula", ISOMERIC_SMILES, {"formula": "C19H28O2"}],
         ["inchi_to_formula", INCHI, {"formula": "C19H28O2"}],
     ],
 )