diff --git a/CHANGELOG.md b/CHANGELOG.md
index 48dba14..05d57ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,8 @@
 
+## 0.2.1
+
+- Added missing documentation on new feature
+
 ## 0.2.0
 
 - Added support for creating a `Cardinal()` from a cardinal text, e.g., `Cardinal('one thousand')`
diff --git a/README.md b/README.md
index 9ac9660..c38fd01 100644
--- a/README.md
+++ b/README.md
@@ -15,11 +15,12 @@ Simple package to transform numbers into English numerals without flutter depend
 
 ## Features
 
-Only integer cardinals are currently available, in the non-inclusive range ]-10^66, 10^66[
+Only integer cardinals are currently available, in the non-inclusive range `]-10^66, 10^66[`
 
 
 ## Usage
  
+It can be used to create a `Cardinal` number from `int` or `BigInt`:
 
 ```dart
 final other = Cardinal(999);
@@ -27,3 +28,13 @@ print(other.enUk); // "nine hundred and ninety-nine"
 print(other.enUs); // "nine hundred ninety-nine"
 print(other.toString()); // "nine hundred ninety-nine"
 ```
+
+It can also be used the other way around to convert cardinal text to int and BigInt:
+
+```dart
+final uk = Cardinal("nine hundred and ninety-nine");
+print(uk.toInt()); // "999"
+final us = Cardinal("nine hundred ninety-nine");
+print(us.toInt()); // "999"
+```
+<!-- https://pub.dev/packages/english_numerals/versions/0.2.0 -->
\ No newline at end of file
diff --git a/example/english_numerals_example.dart b/example/english_numerals_example.dart
index 962f63d..0ff0fd7 100644
--- a/example/english_numerals_example.dart
+++ b/example/english_numerals_example.dart
@@ -12,4 +12,9 @@ void main() {
   print(other.enUk); // "nine hundred and ninety-nine"
   print(other.enUs); // "nine hundred ninety-nine"
   print(other); // "nine hundred ninety-nine"
+
+  final uk = Cardinal('nine hundred and ninety-nine');
+  print(uk.toInt()); // "999"
+  final us = Cardinal('nine hundred ninety-nine');
+  print(us.toInt()); // "999"
 }
diff --git a/pubspec.yaml b/pubspec.yaml
index 9816eab..5741df5 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: english_numerals
 description: A package to convert numbers to and from their English written form, with null safety and no dependency on flutter.
-version: 0.2.0
+version: 0.2.1
 homepage: https://github.com/gbassisp/english_numerals
 
 environment: