diff --git a/MString.cpp b/MString.cpp
index b9aca9d..8b11859 100644
--- a/MString.cpp
+++ b/MString.cpp
@@ -1,6 +1,7 @@
 #include "MString.h"
 #include "Log.h"
 #include "uuid/uuid.h"
+#include "Exception.h"
 #include <cstring>
 #include <string>
 #include <format>
@@ -279,5 +280,130 @@ namespace coreutils {
    int MString::offset() {
       return cursor - data;
    }
+
+   MString MString::toBinary() {
+      push();
+      reset();
+      MString target;
+      char temp;
+      while(!eod()) {
+	 temp = nextChar();
+	 if(strchr("\\'\".\0\r\n", temp))
+	   target.write('\\');
+	 target.write(temp);
+      }
+      pop();
+      return target;
+   }
    
+   MString MString::fromBinary() {
+      push();
+      reset();
+      MString target;
+      while(!eod()) {
+	 if(ifNext("\\r"))
+	   target.write(13);
+	 else if(ifNext("\\n"))
+	   target.write(10);
+	 else if(ifNext("\\0"))
+	   target.write(0);
+	 else if(ifNext("\\\\"))
+	   target.write("\\");
+	 else if(ifNext("\\."))
+	   target.write(".");
+	 else if(ifNext("\\\""))
+	   target.write("\"");
+	 else if(ifNext("\\\'"))
+	   target.write("'");
+	 else
+	   target.write(nextChar());
+      }
+      pop();
+      return target;
+   }
+   
+   MString MString::toHex() {
+      push();
+      reset();
+      MString target;
+      char temp;
+      while(!eod()) {	   
+	   temp = nextChar();
+	   char temp2 = temp;
+	   temp >>= 4;
+	   target.write(hexChar(temp));
+	   target.write(hexChar(temp2));
+	}      
+      pop();
+      return target;
+   }
+   
+   MString MString::fromHex() {
+      push();
+      reset();
+      MString target;
+      while(!eod()) {
+	 char ch1 = nextChar();
+	 ch1 -= 48;
+	 if(ch1 > 9)
+	   ch1 -= 7;
+	 ch1 <<= 4;
+	 ch1 &= 240;
+	 if(eod())
+	   coreutils::Exception("conversion from hex requires even number of characters.");
+	 char ch2 = nextChar();
+	 ch2 -= 48;
+	 if(ch2 > 9)
+	   ch2 -= 7;
+	 ch2 &= 15;
+	 ch1 |= ch2;
+	 target.write(ch1);
+      }
+      pop();
+      return target;
+   }
+      
+   MString MString::toBase64() {
+      MString target;
+      return target;
+   }
+   
+   
+   MString MString::fromBase64() {
+      MString target;
+      return target;
+   }
+   
+   
+   MString MString::toUpper() {
+      MString target;
+      return target;
+   }
+   
+   
+   MString MString::toLower() {
+      MString target;
+      return target;
+   }
+   
+   
+   MString MString::toCGI() {
+      MString target;
+      return target;
+   }
+   
+   
+   MString MString::fromCGI() {
+      MString target;
+      return target;
+   }
+
+   char MString::hexChar(char c) {
+      c &= 15;
+      c += 48;
+      if(c > 57)
+	c += 7;
+      return c;
+   }
+      
 }
diff --git a/MString.h b/MString.h
index dbd05d5..c0fde6d 100644
--- a/MString.h
+++ b/MString.h
@@ -231,14 +231,81 @@ namespace coreutils {
       ///
 
       MString &read(int fd);
+
+      ///
+      ///
+      ///
       
       int offset();
 
+      ///
+      ///
+      ///
+      
+      MString toBinary();
+
+      ///
+      ///
+      ///
+
+      MString fromBinary();
+
+      ///
+      ///
+      ///
+
+      MString toHex();
+
+      ///
+      ///
+      ///
+
+      MString fromHex();
+
+      ///
+      ///
+      ///
+
+      MString toBase64();
+
+      ///
+      ///
+      ///
+
+      MString fromBase64();
+
+      ///
+      ///
+      ///
+
+      MString toUpper();
+
+      ///
+      ///
+      ///
+
+
+      MString toLower();
+
+      ///
+      ///
+      ///
+
+      MString toCGI();
+
+      ///
+      ///
+      ///
+
+      MString fromCGI();
+
     protected:
       void setSize(int size);
       
     private:
       int bufferSize = 0;
+      char hexChar(char c);
+      
    };
    
 }
diff --git a/testing/jstring_test b/testing/jstring_test
index f131c2b..8142a0d 100755
Binary files a/testing/jstring_test and b/testing/jstring_test differ
diff --git a/testing/mstring_test.cpp b/testing/mstring_test.cpp
index 47e0596..051588b 100644
--- a/testing/mstring_test.cpp
+++ b/testing/mstring_test.cpp
@@ -94,6 +94,9 @@ int main(int argc, char **argv) {
    int test29 = 402;
    test28 = test29;
    std::cout << "int: " << test28 << std::endl;
+
+   coreutils::MString test30 = "ABCDEF";
+   std::cout << test30 << " to hex " << test30.toHex() << " from hex " << test30.toHex().fromHex() << std::endl;
    
    return 0;
 }