diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4bb93e9f..b08438be 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
     - changing some words and symbols to improve readability and cohesion (#250)[https://github.com/vinifmor/bauh/issues/250]
   
 ### Fixes
+- General
+  - not properly converting bit based sizes (KiB, MiB, etc...) to byte based
+  
 - Debian
   - info: crashing when the package size has unexpected symbols [#251](https://github.com/vinifmor/bauh/issues/251)
 
diff --git a/bauh/commons/util.py b/bauh/commons/util.py
index 8acd65c7..8f1ab298 100644
--- a/bauh/commons/util.py
+++ b/bauh/commons/util.py
@@ -30,19 +30,23 @@ def deep_update(source: dict, overrides: dict):
 
 def size_to_byte(size: float, unit: str) -> int:
     lower_unit = unit.lower()
+    final_size = size
+
+    if unit == 'b' or len(lower_unit) > 1 and lower_unit.endswith('ib'):
+        final_size /= 8
 
     if lower_unit[0] == 'b':
-        final_size = size
+        pass
     elif lower_unit[0] == 'k':
-        final_size = size * 1024
+        final_size = final_size * 1024
     elif lower_unit[0] == 'm':
-        final_size = size * (1024 ** 2)
+        final_size = final_size * (1024 ** 2)
     elif lower_unit[0] == 'g':
-        final_size = size * (1024 ** 3)
+        final_size = final_size * (1024 ** 3)
     elif lower_unit[0] == 't':
-        final_size = size * (1024 ** 4)
+        final_size = final_size * (1024 ** 4)
     else:
-        final_size = size * (1024 ** 5)
+        final_size = final_size * (1024 ** 5)
 
     return round(final_size)
 
diff --git a/tests/common/test_util.py b/tests/common/test_util.py
index 10f45a6c..b5cbc2ce 100644
--- a/tests/common/test_util.py
+++ b/tests/common/test_util.py
@@ -6,8 +6,28 @@ from bauh.commons.util import size_to_byte
 class SizeToByteTest(TestCase):
 
     def test_must_return_right_number_of_bytes(self):
+        self.assertEqual(1.0, size_to_byte(1, 'B'))
+        self.assertEqual(1024, size_to_byte(1, 'K'))
         self.assertEqual(round(float('58675.2')), size_to_byte(57.3, 'K'))
+        self.assertEqual(1048576, size_to_byte(1, 'M'))
         self.assertEqual(round(float('60083404.8')), size_to_byte(57.3, 'M'))
+        self.assertEqual(1073741824, size_to_byte(1, 'G'))
         self.assertEqual(round(float('61525406515.2')), size_to_byte(57.3, 'G'))
+        self.assertEqual(1099511627776, size_to_byte(1, 'T'))
         self.assertEqual(round(float('63002016271564.8')), size_to_byte(57.3, 'T'))
+        self.assertEqual(1125899906842624, size_to_byte(1, 'P'))
         self.assertEqual(round(float('64514064662082350')), size_to_byte(57.3, 'P'))
+
+    def test_must_return_right_number_of_bytes_for_bit_units(self):
+        self.assertEqual(1, size_to_byte(8, 'b'))
+        self.assertEqual(2, size_to_byte(16, 'b'))
+        self.assertEqual(128, size_to_byte(1, 'KiB'))
+        self.assertEqual(197460, size_to_byte(1542.66, 'KiB'))
+        self.assertEqual(131072, size_to_byte(1, 'MiB'))
+        self.assertEqual(546570, size_to_byte(4.17, 'MiB'))
+        self.assertEqual(134217728, size_to_byte(1, 'GiB'))
+        self.assertEqual(2691065446, size_to_byte(20.05, 'GiB'))
+        self.assertEqual(137438953472, size_to_byte(1, 'TiB'))
+        self.assertEqual(6926923254989, size_to_byte(50.4, 'TiB'))
+        self.assertEqual(140737488355328, size_to_byte(1, 'PiB'))
+        self.assertEqual(330733097635021, size_to_byte(2.35, 'PiB'))