diff --git a/src/convert_m_to_ft.h b/src/convert_m_to_ft.h
index 6b9317c..3c99725 100644
--- a/src/convert_m_to_ft.h
+++ b/src/convert_m_to_ft.h
@@ -2,6 +2,13 @@
 #ifndef THEADMIRALS_CONVERT_M_TO_FT_H
 #define THEADMIRALS_CONVERT_M_TO_FT_H
 
+// Convert length from one unit to another
+// Parameters:
+//   value: the value to be converted
+//   from_unit: the unit to convert from ('m' for meters, 'c' for centimeters, 'i' for inches)
+//   to_unit: the unit to convert to ('m' for meters, 'c' for centimeters, 'i' for inches)
+// Returns:
+//   The converted length value
 
 float convert_length(float value, char from_unit, char to_unit);