diff --git a/freelist/main.c b/freelist/main.c
index 49aa19b..0fde246 100644
--- a/freelist/main.c
+++ b/freelist/main.c
@@ -29,6 +29,7 @@ int main() {
     printf("Item size: %lu\n", sizeof(Vec3));
     printf("Buffer size: %d\n", BUFFER_SIZE);
     printf("Space utilization internal: %.2f%%\n", 100.0 * fl_utilization(&fl, sizeof(Vec3)));
+    printf("Space utilization external: %.2f%%\n", 100.0 * ((float)fl.size * cap) / BUFFER_SIZE);
 
     assert(fl_available(&fl) == cap);