diff --git a/src/pelfy/_main.py b/src/pelfy/_main.py
index 206a2aa..1bf7291 100644
--- a/src/pelfy/_main.py
+++ b/src/pelfy/_main.py
@@ -42,6 +42,7 @@ class elf_symbol():
         offset_in_section: Position of first symbol byte
             relative to section start
         offset_in_file: Position of first symbol byte in object file
+        size: size of symbol in bytes
         fields: All symbol header fields as dict
     """
 
@@ -71,6 +72,7 @@ class elf_symbol():
         self.thumb_mode = bool((file.architecture == 'EM_ARM') & fields['st_value'] & 1)
         self.offset_in_section = fields['st_value'] & ~int(self.thumb_mode)
         self.offset_in_file = self.section['sh_offset'] + self.offset_in_section if self.section else 0
+        self.size = self.fields['st_size']
 
     @property
     def data(self) -> bytes: