diff --git a/README.md b/README.md
index b2557652..5f94e70c 100644
--- a/README.md
+++ b/README.md
@@ -682,6 +682,8 @@ Reveal.getConfig();
 // Fetch the current scale of the presentation
 Reveal.getScale();
 
+Reveal.getComputedSlideSize(); // Returns object with width, height keys, and (scaled) presentationWidth and presentationHeight.
+
 // Retrieves the previous and current slide elements
 Reveal.getPreviousSlide();
 Reveal.getCurrentSlide();
diff --git a/js/reveal.js b/js/reveal.js
index cba1d288..71f5e275 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -6576,6 +6576,7 @@
 		getScale: function() {
 			return scale;
 		},
+		getComputedSlideSize: getComputedSlideSize,
 
 		// Returns the current configuration object
 		getConfig: function() {