diff --git a/CHANGELOG.md b/CHANGELOG.md
index 017ca9b295..4f45202351 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,9 @@
 ## 4.2.2
 
 * `Versions`:
-  * `MicroUtils`: `0.16.0` -> `0.16.1`
+    * `MicroUtils`: `0.16.0` -> `0.16.1`
+* `Core`:
+    * Fix of [#694](https://github.com/InsanusMokrassar/TelegramBotAPI/issues/694): add opportunity to create `ChatId` and `ChatIdWithThreadId` from `IdChatIdentifier`
 
 ## 4.2.1
 
diff --git a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/ChatIdentifier.kt b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/ChatIdentifier.kt
index 9b8eedeb5e..625b8eaa4c 100644
--- a/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/ChatIdentifier.kt
+++ b/tgbotapi.core/src/commonMain/kotlin/dev/inmo/tgbotapi/types/ChatIdentifier.kt
@@ -54,6 +54,13 @@ value class ChatIdWithThreadId(val chatIdWithThreadId: Pair<Identifier, MessageT
 val ChatIdentifier.threadId: MessageThreadId?
     get() = (this as? IdChatIdentifier) ?.threadId
 
+fun IdChatIdentifier.toChatId() = when (this) {
+    is ChatId -> this
+    is ChatIdWithThreadId -> ChatId(chatId)
+}
+
+fun IdChatIdentifier.toChatWithThreadId(threadId: MessageThreadId) = IdChatIdentifier(chatId, threadId)
+
 /**
  * https://core.telegram.org/bots/api#formatting-options
  */