To know Coinbase withdrawal charges, you can refer to their fee schedule available on the platform. However, for specific details, it’s always good to contact Coinbase directly. You can reach them at their Coinbase support number: 1-888-842-1385. This number connects you to their customer service team, who can provide the most up-to-date information. For further inquiries, Coinbase's official helpline number is available to assist you around the clock. If you're experiencing any issues with the withdrawal process, don’t hesitate to reach out to their support services.