diff --git a/include/Common.h b/include/Common.h
index fdf529c..9a6be61 100644
--- a/include/Common.h
+++ b/include/Common.h
@@ -178,6 +178,7 @@ void RegisterThread(const std::string& str);
 #define KB 1024llu
 #define MB (KB * 1024llu)
 #define GB (MB * 1024llu)
+#define TB (GB * 1024llu)
 #define SSU_UNRAW SECRET_SENTRY_URL
 
 #define _file_basename std::filesystem::path(__FILE__).filename().string()
@@ -352,3 +353,5 @@ inline T DeComp(const T& Compressed) {
 
 std::string GetPlatformAgnosticErrorString();
 #define S_DSN SU_RAW
+
+std::string ToHumanReadableSize(size_t Size);
diff --git a/src/Common.cpp b/src/Common.cpp
index 1589b34..10272ef 100644
--- a/src/Common.cpp
+++ b/src/Common.cpp
@@ -427,3 +427,17 @@ std::string GetPlatformAgnosticErrorString() {
     return "(no human-readable errors on this platform)";
 #endif
 }
+
+std::string ToHumanReadableSize(size_t Size) {
+    if (Size > TB) {
+        return fmt::format("{:.2f} TiB", double(Size) / TB);
+    } else if (Size > GB) {
+        return fmt::format("{:.2f} GiB", double(Size) / GB);
+    } else if (Size > MB) {
+        return fmt::format("{:.2f} MiB", double(Size) / MB);
+    } else if (Size > KB) {
+        return fmt::format("{:.2f} KiB", double(Size) / KB);
+    } else {
+        return fmt::format("{} B", Size);
+    }
+}