diff --git a/core/smn_bitbuffer.cpp b/core/smn_bitbuffer.cpp
index 7db96957..949717e2 100644
--- a/core/smn_bitbuffer.cpp
+++ b/core/smn_bitbuffer.cpp
@@ -651,6 +651,25 @@ static cell_t smn_BfReadAngles(IPluginContext *pCtx, const cell_t *params)
 	return 1;
 }
 
+static cell_t smn_BfGetNumBytesLeft(IPluginContext *pCtx, const cell_t *params)
+{
+	Handle_t hndl = static_cast<Handle_t>(params[1]);
+	HandleError herr;
+	HandleSecurity sec;
+	bf_read *pBitBuf;
+
+	sec.pOwner = NULL;
+	sec.pIdentity = g_pCoreIdent;
+
+	if ((herr=g_HandleSys.ReadHandle(hndl, g_RdBitBufType, &sec, (void **)&pBitBuf))
+		!= HandleError_None)
+	{
+		return pCtx->ThrowNativeError("Invalid bit buffer handle %x (error %d)", hndl, herr);
+	}
+
+	return pBitBuf->GetNumBitsLeft() >> 3;
+}
+
 REGISTER_NATIVES(bitbufnatives)
 {
 	{"BfWriteBool",				smn_BfWriteBool},
@@ -681,5 +700,6 @@ REGISTER_NATIVES(bitbufnatives)
 	{"BfReadVecCoord",			smn_BfReadVecCoord},
 	{"BfReadVecNormal",			smn_BfReadVecNormal},
 	{"BfReadAngles",			smn_BfReadAngles},
+	{"BfGetNumBytesLeft",		smn_BfGetNumBytesLeft},
 	{NULL,						NULL}
 };
diff --git a/plugins/include/bitbuffer.inc b/plugins/include/bitbuffer.inc
index ddf0790d..87de566c 100644
--- a/plugins/include/bitbuffer.inc
+++ b/plugins/include/bitbuffer.inc
@@ -314,3 +314,12 @@ native BfReadVecNormal(Handle:bf, Float:vec[3]);
  * @error				Invalid or incorrect Handle.
  */
 native BfReadAngles(Handle:bf, Float:angles[3]);
+
+/**
+ * Returns the number of bytes left in a readable bitbuffer (bf_read).
+ *
+ * @param bf			bf_read handle to read from.
+ * @return				Number of bytes left unread.
+ * @error				Invalid or incorrect Handle.
+ */
+native BfGetNumBytesLeft(Handle:bf);