diff --git a/info-i18n.yml b/info-i18n.yml
index fc51f569..a5a2293c 100644
--- a/info-i18n.yml
+++ b/info-i18n.yml
@@ -4,9 +4,11 @@ zh_hans:
         location: 地区
         born: 出生
         died: 逝世
+        age: 年龄
 zh_hant:
     key:
         alias: 暱稱
         location: 地區
         born: 出生
         died: 逝世
+        age: 年齡
diff --git a/scripts/build.ts b/scripts/build.ts
index 512fa8c8..05974c6c 100644
--- a/scripts/build.ts
+++ b/scripts/build.ts
@@ -7,6 +7,7 @@ import YAML from 'js-yaml';
 import metadataParser from 'markdown-yaml-metadata-parser';
 
 import { renderMdx } from "./mdx.js";
+import moment from "moment";
 
 const PUBLIC_DIR = "public";
 
@@ -61,6 +62,13 @@ function buildPeopleInfoAndList() {
       // Get sort key
       const sortKey = info.info?.died ?? mdMeta.info?.died ?? '0'
 
+      // Add age
+      if (info.info && info.info.died && info.info.born)
+      {
+        try { info.info.age = Math.abs(moment(info.info.died).diff(info.info.born, 'years', false)) }
+        catch (e) { console.log(`Unable to calculate age for ${dirname}`) }
+      }
+
       // Convert info dict to [[key, value], ...]
       // And add info k-v pairs from markdown to the info object in json5
       info.info = [...Object.entries(mdMeta.info ?? {}), ...Object.entries(info.info ?? {})]