diff --git a/tools/convert_diffusers20_original_sd.py b/tools/convert_diffusers20_original_sd.py
index 7c7cc1c5..c33ca202 100644
--- a/tools/convert_diffusers20_original_sd.py
+++ b/tools/convert_diffusers20_original_sd.py
@@ -12,12 +12,12 @@ def convert(args):
   # 引数を確認する
   load_dtype = torch.float16 if args.fp16 else None
 
-  save_dtype = None
-  if args.fp16:
+  save_dtype = None 
+  if args.fp16 or args.save_precision_as == "fp16":
     save_dtype = torch.float16
-  elif args.bf16:
+  elif args.bf16 or args.save_precision_as == "bf16":
     save_dtype = torch.bfloat16
-  elif args.float:
+  elif args.float or args.save_precision_as == "float":
     save_dtype = torch.float
 
   is_load_ckpt = os.path.isfile(args.model_to_load)
@@ -72,6 +72,8 @@ def setup_parser() -> argparse.ArgumentParser:
   parser.add_argument("--bf16", action='store_true', help='save as bf16 (checkpoint only) / bf16形式で保存する（checkpointのみ対応）')
   parser.add_argument("--float", action='store_true',
                       help='save as float (checkpoint only) / float(float32)形式で保存する（checkpointのみ対応）')
+  parser.add_argument("--save_precision_as", type=str, default="no", choices=["fp16", "bf16", "float"], 
+                      help="save precision")
   parser.add_argument("--epoch", type=int, default=0, help='epoch to write to checkpoint / checkpointに記録するepoch数の値')
   parser.add_argument("--global_step", type=int, default=0,
                       help='global_step to write to checkpoint / checkpointに記録するglobal_stepの値')