diff --git a/objdiff-core/config-schema.json b/objdiff-core/config-schema.json
index 515f1bbf..dab2c33c 100644
--- a/objdiff-core/config-schema.json
+++ b/objdiff-core/config-schema.json
@@ -82,6 +82,27 @@
       "name": "Space between args",
       "description": "Adds a space between arguments in the diff output."
     },
+    {
+      "id": "showSymbolSizes",
+      "type": "choice",
+      "default": "off",
+      "name": "Show symbol sizes",
+      "description": "Shows symbol sizes in the symbol view.",
+      "items": [
+        {
+          "value": "off",
+          "name": "Off"
+        },
+        {
+          "value": "hex",
+          "name": "Hex"
+        },
+        {
+          "value": "decimal",
+          "name": "Decimal"
+        }
+      ]
+    },
     {
       "id": "combineDataSections",
       "type": "boolean",
@@ -296,6 +317,7 @@
       "properties": [
         "functionRelocDiffs",
         "demangler",
+        "showSymbolSizes",
         "spaceBetweenArgs",
         "combineDataSections",
         "combineTextSections"
diff --git a/objdiff-gui/src/app_config.rs b/objdiff-gui/src/app_config.rs
index 3a058c29..0bbde3be 100644
--- a/objdiff-gui/src/app_config.rs
+++ b/objdiff-gui/src/app_config.rs
@@ -6,7 +6,7 @@ use objdiff_core::{
     config::ScratchConfig,
     diff::{
         ArmArchVersion, ArmR9Usage, DiffObjConfig, FunctionRelocDiffs, MipsAbi, MipsInstrCategory,
-        X86Formatter,
+        ShowSymbolSizes, X86Formatter,
     },
 };
 use typed_path::{Utf8PlatformPathBuf, Utf8UnixPathBuf};
@@ -227,6 +227,7 @@ pub struct DiffObjConfigV1 {
     pub relax_reloc_diffs: bool,
     #[serde(default = "bool_true")]
     pub space_between_args: bool,
+    pub show_symbol_sizes: ShowSymbolSizes,
     pub combine_data_sections: bool,
     // x86
     pub x86_formatter: X86Formatter,
@@ -248,6 +249,7 @@ impl Default for DiffObjConfigV1 {
         Self {
             relax_reloc_diffs: false,
             space_between_args: true,
+            show_symbol_sizes: Default::default(),
             combine_data_sections: false,
             x86_formatter: Default::default(),
             mips_abi: Default::default(),
@@ -272,6 +274,7 @@ impl DiffObjConfigV1 {
                 FunctionRelocDiffs::default()
             },
             space_between_args: self.space_between_args,
+            show_symbol_sizes: self.show_symbol_sizes,
             combine_data_sections: self.combine_data_sections,
             x86_formatter: self.x86_formatter,
             mips_abi: self.mips_abi,
diff --git a/objdiff-gui/src/views/diff.rs b/objdiff-gui/src/views/diff.rs
index cb8804e1..3e52021f 100644
--- a/objdiff-gui/src/views/diff.rs
+++ b/objdiff-gui/src/views/diff.rs
@@ -665,6 +665,7 @@ fn diff_col_ui(
                 appearance,
                 column,
                 open_sections,
+                diff_config,
             ) {
                 match (column, action) {
                     (
@@ -703,6 +704,7 @@ fn diff_col_ui(
                 appearance,
                 column,
                 open_sections,
+                diff_config,
             ) {
                 ret = Some(result);
             }
diff --git a/objdiff-gui/src/views/symbol_diff.rs b/objdiff-gui/src/views/symbol_diff.rs
index 6b088e10..abd49529 100644
--- a/objdiff-gui/src/views/symbol_diff.rs
+++ b/objdiff-gui/src/views/symbol_diff.rs
@@ -6,7 +6,7 @@ use egui::{
 };
 use objdiff_core::{
     diff::{
-        ObjectDiff, SymbolDiff,
+        DiffObjConfig, ObjectDiff, ShowSymbolSizes, SymbolDiff,
         display::{
             HighlightKind, SectionDisplay, SymbolFilter, SymbolNavigationKind, display_sections,
             symbol_context, symbol_hover,
@@ -525,6 +525,7 @@ fn symbol_ui(
     state: &SymbolViewState,
     appearance: &Appearance,
     column: usize,
+    diff_config: &DiffObjConfig,
 ) -> Option<DiffViewAction> {
     let mut ret = None;
     let mut job = LayoutJob::default();
@@ -572,6 +573,21 @@ fn symbol_ui(
         write_text(") ", appearance.text_color, &mut job, appearance.code_font.clone());
     }
     write_text(name, appearance.highlight_color, &mut job, appearance.code_font.clone());
+    if diff_config.show_symbol_sizes == ShowSymbolSizes::Decimal {
+        write_text(
+            &format!(" (size={})", symbol.size),
+            appearance.deemphasized_text_color,
+            &mut job,
+            appearance.code_font.clone(),
+        );
+    } else if diff_config.show_symbol_sizes == ShowSymbolSizes::Hex {
+        write_text(
+            &format!(" (size={:x})", symbol.size),
+            appearance.deemphasized_text_color,
+            &mut job,
+            appearance.code_font.clone(),
+        );
+    }
     let response = egui::Button::selectable(selected, job)
         .ui(ui)
         .on_hover_ui_at_pointer(|ui| symbol_hover_ui(ui, ctx, symbol_idx, appearance));
@@ -646,6 +662,7 @@ pub fn symbol_list_ui(
     appearance: &Appearance,
     column: usize,
     open_sections: Option<bool>,
+    diff_config: &DiffObjConfig,
 ) -> Option<DiffViewAction> {
     let mut ret = None;
     ScrollArea::both().auto_shrink([false, false]).show(ui, |ui| {
@@ -770,6 +787,7 @@ pub fn symbol_list_ui(
                                 state,
                                 appearance,
                                 column,
+                                diff_config,
                             ) {
                                 ret = Some(result);
                             }