diff --git a/utitlity_functions_benchmarks.py b/utitlity_functions_benchmarks.py
new file mode 100644
index 0000000..626f397
--- /dev/null
+++ b/utitlity_functions_benchmarks.py
@@ -0,0 +1,64 @@
+import json
+import os
+import tomllib as tl
+
+def entity_sets(input_file_path: str, output_file_path: str):
+    """
+        Creates a json file of entity_sets required by diff-mpm
+    code from the json file of entity_sets of the CB-Geo MPM code.
+
+    Parameters
+    ----------
+    input_file_path : str
+    output_file_path : str
+
+    Returns
+    -------
+    None
+    """
+    if not os.path.exists(input_file_path):
+        raise FileNotFoundError("File does not exist")
+    with open(input_file_path) as f:
+        data = json.load(f)
+    dictionary = {}
+    dictionary2 = {}
+    if("particle_sets" in data):
+        for i in data["particle_sets"]:
+            dictionary2[i["id"]] = i["set"]
+        dictionary["particle_sets"] = dictionary2
+    dictionary2 = {}
+    for i in data["node_sets"]:
+        dictionary2[i["id"]] = i["set"]
+    dictionary["node_sets"] = dictionary2
+    with open(output_file_path, "w") as outfile:
+        json.dump(outfile, indent=2)
+
+
+def particles_txt_to_json(input_file_path: str, output_file_path: str):
+    """
+        Creates a json file of particles required by diff-mpm
+    code from the txt file of particles of the CB-Geo MPM code.
+
+    Parameters
+    ----------
+    input_file_path : str
+    output_file_path : str
+
+    Returns
+    -------
+    None
+    """
+    if not os.path.exists(input_file_path):
+        raise FileNotFoundError("File does not exist")
+    with open(input_file_path, "r") as f:
+        lines = f.readlines()
+
+    data = []
+    for line in lines[1:]:
+        line = line.strip()
+        if line:
+            floats = line.split(" ")
+        data.append([[float(f) for f in floats]])
+
+    with open(output_file_path, "w") as f:
+        json.dump(data, f, indent=2)