diff --git a/game/utils.py b/game/utils.py
index 34b82aa4..44652472 100644
--- a/game/utils.py
+++ b/game/utils.py
@@ -1,14 +1,14 @@
-def meter_to_feet(value_in_meter):
+def meter_to_feet(value_in_meter: float) -> int:
     return int(3.28084 * value_in_meter)
 
 
-def feet_to_meter(value_in_feet):
-    return int(float(value_in_feet)/3.048)
+def feet_to_meter(value_in_feet: float) -> int:
+    return int(value_in_feet / 3.28084)
 
 
-def meter_to_nm(value_in_meter):
-    return int(float(value_in_meter)*0.000539957)
+def meter_to_nm(value_in_meter: float) -> int:
+    return int(value_in_meter / 1852)
 
 
-def nm_to_meter(value_in_nm):
-    return int(float(value_in_nm)*1852)
\ No newline at end of file
+def nm_to_meter(value_in_nm: float) -> int:
+    return int(value_in_nm * 1852)