diff --git a/src/plugins/network/RequestDetails.js b/src/plugins/network/RequestDetails.js
index d56c0108a..f40dc6cc3 100644
--- a/src/plugins/network/RequestDetails.js
+++ b/src/plugins/network/RequestDetails.js
@@ -62,7 +62,7 @@ function decodeBody(container: Request | Response): string {
   if (!container.data) {
     return '';
   }
-  const b64Decoded = atob(container.data);
+  const b64Decoded = decodeURIComponent(escape(atob(container.data)));
 
   return getHeaderValue(container.headers, 'Content-Encoding') === 'gzip'
     ? decompress(b64Decoded)
diff --git a/src/plugins/network/index.js b/src/plugins/network/index.js
index 6e1622281..bd90c2478 100644
--- a/src/plugins/network/index.js
+++ b/src/plugins/network/index.js
@@ -490,7 +490,7 @@ class SizeColumn extends PureComponent<{
     if (lengthString != null && lengthString != '') {
       length = parseInt(lengthString, 10);
     } else if (response.data) {
-      length = atob(response.data).length;
+      length = decodeURIComponent(escape(atob(response.data))).length;
     }
     return length;
   }