diff --git a/compilesketches/compilesketches.py b/compilesketches/compilesketches.py
index 1be7b97..a9ec404 100644
--- a/compilesketches/compilesketches.py
+++ b/compilesketches/compilesketches.py
@@ -1,4 +1,5 @@
 import atexit
+import time
 import contextlib
 import enum
 import json
@@ -893,9 +894,11 @@ def compile_sketch(self, sketch_path, clean_build_cache):
         if clean_build_cache:
             for cache_path in pathlib.Path("/tmp").glob(pattern="arduino*"):
                 shutil.rmtree(path=cache_path)
-
+        start_time = time.monotonic()
         compilation_data = self.run_arduino_cli_command(
             command=compilation_command, enable_output=self.RunCommandOutput.NONE, exit_on_failure=False)
+        diff_time = time.monotonic() - start_time
+
         # Group compilation output to make the log easy to read
         # https://github.com/actions/toolkit/blob/master/docs/commands.md#group-and-ungroup-log-lines
         print("::group::Compiling sketch:", path_relative_to_workspace(path=sketch_path))
@@ -909,6 +912,14 @@ class CompilationResult:
 
         if not CompilationResult.success:
             print("::error::Compilation failed")
+        else:
+            time_summary = ""
+            if diff_time > 60:
+                if diff_time > 360:
+                    time_summary += f"{int(diff_time / 360)}h "
+                time_summary += f"{int(diff_time / 60) % 60}m "
+            time_summary += f"{int(diff_time) % 60}s"
+            print("Compilation time elapsed:", time_summary)
 
         return CompilationResult()
 
diff --git a/compilesketches/tests/test_compilesketches.py b/compilesketches/tests/test_compilesketches.py
index 8074f2f..60b713d 100644
--- a/compilesketches/tests/test_compilesketches.py
+++ b/compilesketches/tests/test_compilesketches.py
@@ -1439,6 +1439,8 @@ class CompilationData:
     )
     if not expected_success:
         expected_stdout += "\n::error::Compilation failed"
+    else:
+        expected_stdout += "\nCompilation time elapsed: 0s"
     assert capsys.readouterr().out.strip() == expected_stdout
 
     assert compilation_result.sketch == sketch_path