diff --git a/conans/client/tools/files.py b/conans/client/tools/files.py
index 8f75d12e0c5..8096b4f5e84 100644
--- a/conans/client/tools/files.py
+++ b/conans/client/tools/files.py
@@ -13,6 +13,8 @@
 
 _global_output = None
 
+UNIT_SIZE = 1000.0
+
 
 @contextmanager
 def chdir(newdir):
@@ -35,9 +37,9 @@ def human_size(size_bytes):
 
     num = float(size_bytes)
     for suffix, precision in suffixes_table:
-        if num < 1024.0:
+        if num < UNIT_SIZE:
             break
-        num /= 1024.0
+        num /= UNIT_SIZE
 
     if precision == 0:
         formatted_size = "%d" % num