diff --git a/docs/_config.yml b/docs/_config.yml
index 2bb7580..e7373df 100644
--- a/docs/_config.yml
+++ b/docs/_config.yml
@@ -2,3 +2,6 @@
 name: Molecular-Weight-Calculator-VB6
 description: Calculates the molecular weight and percent composition of chemical formulas and amino acids.
 url: https://pnnl-comp-mass-spec.github.io/Molecular-Weight-Calculator-VB6/
+
+# Google Analytics
+google_analytics: G-LXXKP1N66C
diff --git a/docs/_includes/head-custom-google-analytics.html b/docs/_includes/head-custom-google-analytics.html
new file mode 100644
index 0000000..1cd3da8
--- /dev/null
+++ b/docs/_includes/head-custom-google-analytics.html
@@ -0,0 +1,9 @@
+<!-- Global site tag (gtag.js) - Google Analytics -->
+<script async src="https://www.googletagmanager.com/gtag/js?id={{ site.google_analytics }}"></script>
+<script>
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
+
+  gtag('config', '{{ site.google_analytics }}');
+</script>
\ No newline at end of file