How to obtain Telegram chat_id for a specific user?

Question

How to obtain user chat_id in Telegram bot API? The documentation says:

Integer | Unique identifier for the message recipient — User or G

Answer 1

There is a bot that echoes your chat id upon starting a conversation.

Just search for @chatid_echo_bot and tap /start. It will echo your chat id.

Another option is @getidsbot which gives you much more information. This bot also gives information about a forwarded message (from user, to user, chad ids, etc) if you forward the message to the bot.