diff --git a/storm/String.cpp b/storm/String.cpp
index becc2fb..43a6b1a 100644
--- a/storm/String.cpp
+++ b/storm/String.cpp
@@ -201,3 +201,12 @@ uint32_t SStrHashHT(const char* string) {
 
     return bjhash((uint8_t*)&normalized, length, 0);
 }
+
+size_t SStrLen(const char* string) {
+    STORM_ASSERT(string);
+
+    const char* c;
+    for (c = string; *c; ++c)
+        ;
+    return c - string;
+}
diff --git a/storm/String.hpp b/storm/String.hpp
index 285c7ef..6b27ddb 100644
--- a/storm/String.hpp
+++ b/storm/String.hpp
@@ -15,4 +15,6 @@ size_t SStrCopy(char* dest, const char* source, size_t destsize);
 
 uint32_t SStrHashHT(const char* string);
 
+size_t SStrLen(const char* string);
+
 #endif
diff --git a/test/String.cpp b/test/String.cpp
index 4afe378..97238fc 100644
--- a/test/String.cpp
+++ b/test/String.cpp
@@ -54,3 +54,10 @@ TEST_CASE("SStrHashHT", "[string]") {
         REQUIRE(hashForwardSlash == hashBackSlash);
     }
 }
+
+TEST_CASE("SStrLen", "[string]") {
+    SECTION("calculates string length correctly") {
+        auto length = SStrLen("foo");
+        REQUIRE(length == 3);
+    }
+}