diff --git a/gguf-py/gguf/gguf_manager.py b/gguf-py/gguf/gguf_manager.py
index f74b24117d149..fcf0ad8aa4e1c 100644
--- a/gguf-py/gguf/gguf_manager.py
+++ b/gguf-py/gguf/gguf_manager.py
@@ -232,11 +232,11 @@ def get_tensor_size(tensor) -> int:
     @staticmethod
     def split_str_to_n_bytes(split_str: str) -> int:
         if split_str.endswith("K"):
-            n = int(split_str[:-1]) * 1024
+            n = int(split_str[:-1]) * 1000
         elif split_str.endswith("M"):
-            n = int(split_str[:-1]) * 1024 * 1024
+            n = int(split_str[:-1]) * 1000 * 1000
         elif split_str.endswith("G"):
-            n = int(split_str[:-1]) * 1024 * 1024 * 1024
+            n = int(split_str[:-1]) * 1000 * 1000 * 1000
         elif split_str.isnumeric():
             n = int(split_str)
         else:
@@ -253,7 +253,7 @@ def format_n_bytes_to_str(num: int) -> str:
             return "negligible - metadata only"
         fnum = float(num)
         for unit in ("", "K", "M", "G"):
-            if abs(fnum) < 1024.0:
+            if abs(fnum) < 1000.0:
                 return f"{fnum:3.1f}{unit}"
-            fnum /= 1024.0
+            fnum /= 1000.0
         return f"{fnum:.1f}T - over 1TB, --split recommended"
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