How much will it cost me through airport taxi from Beijing Capital T3 to Capital Hotel?

It's about CNY 90 - 100 by taxi from the airport to the hotel. If it's a bit expensive for you, you can take the shuttle bus line 3 and get off at the Chaoyangmen Station. Then take a taxi to your destination. The bus fare is about CNY 21 and the taxi fare is about CNY 8 -12.