diff --git a/package.json b/package.json
index 1bb5277..f458a64 100755
--- a/package.json
+++ b/package.json
@@ -66,23 +66,23 @@
 						"type": "string",
 						"editPresentation": "multilineText",
 						"default": "#ifndef {{*CLASSNAMEUPPER*}}_H\n#define {{*CLASSNAMEUPPER*}}_H\n\n#pragma once\n\nclass {{*CLASSNAME*}}\n{\npublic:\n    {{*CLASSNAME*}}();\n    ~{{*CLASSNAME*}}();\n\nprivate:\n\n};\n\n#endif",
-						"description": "Content of your created header file. \nAvailable commands are:\n{{*CLASSNAME*}} - entered classname.\n{{*CLASSNAMEUPPER*}} - entered classname in upper-case letters.\n{{*CLASSNAMELOWER*}} - entered classname in lower-case letters.\n{{*CLASSNAMELOWER*}} - entered classname in lower-case letters.\n{{*CLASSNAMECAPI*}} - default classname with capitalized first letter.\n{{*HEADERFILENAME*}} - default headerfilename as entered in the settings. \n{{*SOURCEFILENAME*}} - default sourcefilename as entered in the settings.\n{{*CURRENTDATETIME*}} - current date and time.\n{{*CURRENTDATE*}} - current date.\n{{*CURRENTTIME*}} - current time."
+						"description": "Content of your created header file. \nAvailable commands are:\n{{*CLASSNAME*}} - entered classname.\n{{*CLASSNAMEUPPER*}} - entered classname in upper-case letters.\n{{*CLASSNAMELOWER*}} - entered classname in lower-case letters.\n{{*CLASSNAMELOWER*}} - entered classname in lower-case letters.\n{{*CLASSNAMECAPI*}} - default classname with capitalized first letter.\n{{*CLASSNAMESNAKE*}}  - entered CamelCase classname in snake_case.\n{{*HEADERFILENAME*}} - default headerfilename as entered in the settings. \n{{*SOURCEFILENAME*}} - default sourcefilename as entered in the settings.\n{{*CURRENTDATETIME*}} - current date and time.\n{{*CURRENTDATE*}} - current date.\n{{*CURRENTTIME*}} - current time."
 					},
 					"cpp.creator.sourceFileContentPreset": {
 						"type": "string",
 						"editPresentation": "multilineText",
 						"default": "#include \"{{*HEADERFILENAME*}}\"\n\n{{*CLASSNAME*}}::{{*CLASSNAME*}}()\n{\n\n}\n\n{{*CLASSNAME*}}::~{{*CLASSNAME*}}()\n{\n\n}",
-						"description": "Content of your created source file. \nAvailable commands are:\n{{*CLASSNAME*}} - entered classname.\n{{*CLASSNAMEUPPER*}} - entered classname in upper-case letters.\n{{*CLASSNAMELOWER*}} - entered classname in lower-case letters.\n{{*CLASSNAMECAPI*}} - default classname with capitalized first letter.\n{{*HEADERFILENAME*}} - default headerfilename as entered in the settings. \n{{*SOURCEFILENAME*}} - default sourcefilename as entered in the settings.\n{{*CURRENTDATETIME*}} - current date and time.\n{{*CURRENTDATE*}} - current date.\n{{*CURRENTTIME*}} - current time."
+						"description": "Content of your created source file. \nAvailable commands are:\n{{*CLASSNAME*}} - entered classname.\n{{*CLASSNAMEUPPER*}} - entered classname in upper-case letters.\n{{*CLASSNAMELOWER*}} - entered classname in lower-case letters.\n{{*CLASSNAMECAPI*}} - default classname with capitalized first letter.\n{{*CLASSNAMESNAKE*}}  - entered CamelCase classname in snake_case.\n{{*HEADERFILENAME*}} - default headerfilename as entered in the settings. \n{{*SOURCEFILENAME*}} - default sourcefilename as entered in the settings.\n{{*CURRENTDATETIME*}} - current date and time.\n{{*CURRENTDATE*}} - current date.\n{{*CURRENTTIME*}} - current time."
 					},
 					"cpp.creator.sourceFileNamePreset": {
 						"type": "string",
 						"default": "{{*CLASSNAME*}}.cpp",
-						"description": "Name of your source file. \nAvailable commands are:\n{{*CLASSNAME*}} - entered classname.\n{{*CLASSNAMEUPPER*}} - entered classname in upper-case letters.\n{{*CLASSNAMELOWER*}} - entered classname in lower-case letters."
+						"description": "Name of your source file. \nAvailable commands are:\n{{*CLASSNAME*}} - entered classname.\n{{*CLASSNAMEUPPER*}} - entered classname in upper-case letters.\n{{*CLASSNAMELOWER*}} - entered classname in lower-case letters.\n{{*CLASSNAMESNAKE*}}  - entered CamelCase classname in snake_case."
 					},
 					"cpp.creator.headerFileNamePreset": {
 						"type": "string",
 						"default": "{{*CLASSNAME*}}.h",
-						"description": "Name of your header file. \nAvailable commands are:\n{{*CLASSNAME*}} - entered classname.\n{{*CLASSNAMEUPPER*}} - entered classname in upper-case letters.\n{{*CLASSNAMELOWER*}} - entered classname in lower-case letters."
+						"description": "Name of your header file. \nAvailable commands are:\n{{*CLASSNAME*}} - entered classname.\n{{*CLASSNAMEUPPER*}} - entered classname in upper-case letters.\n{{*CLASSNAMELOWER*}} - entered classname in lower-case letters.\n{{*CLASSNAMESNAKE*}}  - entered CamelCase classname in snake_case."
 					},
 					"cpp.creator.createFolder": {
 						"type": "boolean",
diff --git a/src/class_creator.ts b/src/class_creator.ts
index f09352e..ac21c49 100644
--- a/src/class_creator.ts
+++ b/src/class_creator.ts
@@ -31,6 +31,7 @@ export class class_creator
         var upper_regex             : RegExp = /{{\*CLASSNAMEUPPER\*}}/gi;
         var lower_regex             : RegExp = /{{\*CLASSNAMELOWER\*}}/gi;
         var cap_regex               : RegExp = /{{\*CLASSNAMECAPI\*}}/gi;
+        var snake_case_regex        : RegExp = /{{\*CLASSNAMESNAKE\*}}/gi;
         var default_regex           : RegExp = /{{\*CLASSNAME\*}}/gi;
         var headerfilename_regex    : RegExp = /{{\*HEADERFILENAME\*}}/gi;
         var sourcefilename_regex    : RegExp = /{{\*SOURCEFILENAME\*}}/gi;
@@ -42,6 +43,7 @@ export class class_creator
             { reg_expression: upper_regex, replace_string: regex_commands.upper_case(this.class_name)},// CLASSNAMEUPPER - default classname to upper
             { reg_expression: lower_regex, replace_string: regex_commands.lower_case(this.class_name)},// CLASSNAMELOWER - default classname to lower
             { reg_expression: cap_regex, replace_string: regex_commands.capitalize(this.class_name)},  // CLASSNAMECAPI  - default classname with capitalized first letter
+            { reg_expression: snake_case_regex, replace_string: regex_commands.to_snake_case(this.class_name)}, // CLASSNAMESNAKE  - default CamelCase classname in snake_case
             { reg_expression: default_regex, replace_string: regex_commands.default(this.class_name)}, // CLASSNAME      - default classname
         ]
 
@@ -51,6 +53,7 @@ export class class_creator
             { reg_expression: upper_regex, replace_string: regex_commands.upper_case(this.class_name)},      // CLASSNAMEUPPER - default classname to upper
             { reg_expression: lower_regex, replace_string: regex_commands.lower_case(this.class_name)},      // CLASSNAMELOWER - default classname to lower
             { reg_expression: cap_regex, replace_string: regex_commands.capitalize(this.class_name)},        // CLASSNAMECAPI  - default classname with capitalized first letter
+            { reg_expression: snake_case_regex, replace_string: regex_commands.to_snake_case(this.class_name)}, // CLASSNAMESNAKE  - default CamelCase classname in snake_case
             { reg_expression: default_regex, replace_string: regex_commands.default(this.class_name)},       // CLASSNAME      - default classname
             { reg_expression: datetime_regex, replace_string: regex_commands.current_date_time()},      // CURRENTDATETIME  - the current date and time
             { reg_expression: date_regex, replace_string: regex_commands.current_date()},               // CURRENTDATE      - the current date
@@ -117,4 +120,4 @@ export class class_creator
     
         return (hpp && cpp);
     }
-}
\ No newline at end of file
+}
diff --git a/src/regex_commands.ts b/src/regex_commands.ts
index b219a2c..6bc30ad 100644
--- a/src/regex_commands.ts
+++ b/src/regex_commands.ts
@@ -15,6 +15,11 @@ export abstract class regex_commands
         return str.toUpperCase();
     }
 
+    public static to_snake_case(str: string) 
+    {
+        return str.replace(/([a-z])([A-Z0-9])/g, '$1_$2').toLowerCase();
+    }
+
     public static capitalize(str: string) : string
     {
         return str[0].toUpperCase() + str.substring(1);
@@ -47,4 +52,4 @@ export abstract class regex_commands
         let dateTime = new Date();
         return dateTime.toLocaleString();
     }
-}
\ No newline at end of file
+}