diff --git a/driving_log_replayer_cli/core/result.py b/driving_log_replayer_cli/core/result.py
index b8d4dbde0..f8b5514ff 100644
--- a/driving_log_replayer_cli/core/result.py
+++ b/driving_log_replayer_cli/core/result.py
@@ -45,18 +45,3 @@ def display_all(output_directory: Path) -> None:
     for result_path in result_paths:
         print(f"scenario: {result_path.parent.name}")  # noqa
         display(result_path)
-
-
-def convert_to_json(result_path: Path) -> None:
-    output_file_path = result_path.parent.joinpath("result.json")
-    if output_file_path.exists():
-        return
-    result_list = load_result(result_path)
-    with output_file_path.open("w") as out_file:
-        json.dump(result_list, out_file)
-
-
-def convert_all(output_directory: Path) -> None:
-    result_paths = output_directory.glob("**/result.jsonl")
-    for result_path in result_paths:
-        convert_to_json(result_path)
diff --git a/driving_log_replayer_cli/simulation/__init__.py b/driving_log_replayer_cli/simulation/__init__.py
index a760e63c0..bc6c30dc4 100644
--- a/driving_log_replayer_cli/simulation/__init__.py
+++ b/driving_log_replayer_cli/simulation/__init__.py
@@ -4,7 +4,6 @@
 
 from driving_log_replayer_cli.core.config import Config
 from driving_log_replayer_cli.core.config import load_config
-from driving_log_replayer_cli.core.result import convert_all
 from driving_log_replayer_cli.core.result import display_all
 from driving_log_replayer_cli.simulation.run import dry_run as sim_dry_run
 from driving_log_replayer_cli.simulation.run import run as sim_run
@@ -73,16 +72,6 @@ def show_result(output_directory: Path) -> None:
     display_all(output_directory)
 
 
-@simulation.command(context_settings=CONTEXT_SETTINGS)
-@click.argument(
-    "output_directory",
-    type=click.Path(exists=True, file_okay=False, resolve_path=True, path_type=Path),
-)
-def convert_result(output_directory: Path) -> None:
-    """Convert result.jsonl to result.json in output_directory."""
-    convert_all(output_directory)
-
-
 @simulation.command(context_settings=CONTEXT_SETTINGS)
 @click.option(
     "--scenario",
diff --git a/driving_log_replayer_cli/simulation/run.py b/driving_log_replayer_cli/simulation/run.py
index 81ffd5577..4ecadec4f 100644
--- a/driving_log_replayer_cli/simulation/run.py
+++ b/driving_log_replayer_cli/simulation/run.py
@@ -7,7 +7,6 @@
 import termcolor
 
 from driving_log_replayer_cli.core.config import Config
-from driving_log_replayer_cli.core.result import convert_all
 from driving_log_replayer_cli.core.result import display_all
 from driving_log_replayer_cli.core.scenario import Datasets
 from driving_log_replayer_cli.core.scenario import get_dry_run_scenario_path
@@ -93,8 +92,7 @@ def run(
                 update_method,
             )
 
-    # convert result file and display result
-    convert_all(output_dir_by_time)
+    # display result
     display_all(output_dir_by_time)
 
 
@@ -141,8 +139,7 @@ def dry_run(
         run_with_log(cmd, output_case.joinpath("console.log"))
     except KeyboardInterrupt:
         termcolor.cprint("Simulation execution canceled by Ctrl+C", "red")
-    # convert result file and display result
-    convert_all(output_dir_by_time)
+    # display result
     display_all(output_dir_by_time)