diff --git a/modules/reitit-core/src/reitit/impl.cljc b/modules/reitit-core/src/reitit/impl.cljc
index 0ade6c7e..e4426600 100644
--- a/modules/reitit-core/src/reitit/impl.cljc
+++ b/modules/reitit-core/src/reitit/impl.cljc
@@ -201,6 +201,23 @@
                s)
        :cljs (js/decodeURIComponent s))))
 
+(defn form-encode [s]
+  (if s
+    #?(:clj  (-> s
+                 (str/replace #"[^A-Za-z0-9\!'\(\)\*_~.-\\\ ]+" percent-encode)
+                 (^String .replace " " "+"))
+       :cljs (str/replace (js/encodeURIComponent s) "%20" "+"))))
+
+(defn form-decode [s]
+  (if s
+    #?(:clj  (let [s (if (.contains ^String s "+")
+                       (.replace ^String s "+" " ")
+                       s)]
+               (if (.contains ^String s "%")
+                 (URLDecoder/decode s "UTF-8")
+                 s))
+       :cljs (js/decodeURIComponent (str/replace s "+" " ")))))
+
 (defprotocol IntoString
   (into-string [_]))
 
diff --git a/test/cljc/reitit/impl_test.cljc b/test/cljc/reitit/impl_test.cljc
index 782a3435..85526eb4 100644
--- a/test/cljc/reitit/impl_test.cljc
+++ b/test/cljc/reitit/impl_test.cljc
@@ -157,3 +157,15 @@
     "a//" "a//"
     "/path/%C2%ABk%C3%BC%C3%9F%C3%AE%C2%BB" "/path/«küßî»"
     "/path/%E2%80%9C%D0%8C%CF%8D%D0%91%D0%87%E2%80%9D" "/path/“ЌύБЇ”"))
+
+(deftest form-encode-test
+  (are [in out]
+    (= out (impl/form-encode in))
+
+    "+632 905 123 4567" "%2B632+905+123+4567"))
+
+(deftest form-decode-test
+  (are [in out]
+    (= out (impl/form-decode in))
+
+    "%2B632+905+123+4567" "+632 905 123 4567"))