diff --git a/src/js/index.js b/src/js/index.js
index 1e86c91..1f2f0fd 100644
--- a/src/js/index.js
+++ b/src/js/index.js
@@ -291,6 +291,7 @@
         showPending();
         adjustNetworkForSegwit();
         var phrase = DOM.phrase.val();
+        var seed = DOM.seed.val();
         if (phrase != "") {
             // Calculate and display for mnemonic
             var errorText = findPhraseErrors(phrase);
@@ -302,6 +303,11 @@
             var passphrase = DOM.passphrase.val();
             calcBip32RootKeyFromSeed(phrase, passphrase);
         }
+        else if (seed != "") {
+          bip32RootKey = libs.bitcoin.HDNode.fromSeedHex(seed, network);
+          var rootKeyBase58 = bip32RootKey.toBase58();
+          DOM.rootKey.val(rootKeyBase58);
+        }
         else {
             // Calculate and display for root key
             var rootKeyBase58 = DOM.rootKey.val();