diff --git a/node-eclib.js b/node-eclib.js
index c0ab34e..d9cbee2 100644
--- a/node-eclib.js
+++ b/node-eclib.js
@@ -226,7 +226,15 @@ ECLib.prototype = {
             hd: 0,
             ct: 0
         };
-    }
+    },
+
+    /**
+     * Get fragment's header size
+     * @return {Number} header size
+     */
+    getHeaderSize: function() {
+        return addon.EclGetHeaderSize();
+    },
 }
 
 module.exports = ECLib;
diff --git a/src/cpp/libmain.cpp b/src/cpp/libmain.cpp
index 6c23a02..9b31b03 100644
--- a/src/cpp/libmain.cpp
+++ b/src/cpp/libmain.cpp
@@ -77,6 +77,12 @@ NAN_METHOD(EclDestroy) {
     return ;
 }
 
+NAN_METHOD(EclGetHeaderSize) {
+    Nan::HandleScope scope;
+    uint32_t header_size = sizeof(fragment_header_t);
+    info.GetReturnValue().Set(header_size);
+}
+
 NAN_METHOD(EclFragmentsNeeded) {
     Nan::HandleScope scope;
     info.GetReturnValue()
diff --git a/src/cpp/libmain.h b/src/cpp/libmain.h
index a8a542e..544246a 100644
--- a/src/cpp/libmain.h
+++ b/src/cpp/libmain.h
@@ -31,6 +31,7 @@
 
 NAN_METHOD(EclCreate);
 NAN_METHOD(EclDestroy);
+NAN_METHOD(EclGetHeaderSize);
 NAN_METHOD(EclFragmentsNeeded);
 NAN_METHOD(EclGetFragmentMetadata);
 NAN_METHOD(EclIsInvalidFragment);
diff --git a/src/cpp/node-eclib.cpp b/src/cpp/node-eclib.cpp
index 2e61c7c..f621a62 100644
--- a/src/cpp/node-eclib.cpp
+++ b/src/cpp/node-eclib.cpp
@@ -36,6 +36,7 @@ NAN_MODULE_INIT(Init) {
   NAN_EXPORT(target, EclEncode);
   NAN_EXPORT(target, EclEncodeV);
   NAN_EXPORT(target, EclDecode);
+  NAN_EXPORT(target, EclGetHeaderSize);
   NAN_EXPORT(target, EclReconstructFragment);
   NAN_EXPORT(target, EclFragmentsNeeded);
   NAN_EXPORT(target, EclGetFragmentMetadata);