diff --git a/src/Common.h b/src/Common.h
new file mode 100644
index 0000000..d4dffa1
--- /dev/null
+++ b/src/Common.h
@@ -0,0 +1,6 @@
+#pragma once
+
+constexpr unsigned long long operator"" KB(unsigned long long l)
+{
+    return l * 1024;
+}