To convert USDT from ERC20 (Ethereum network) to TRC20 (TRON network), you need to use a trusted cryptocurrency exchange or bridge that supports both networks. Start by transferring your ERC20 USDT to an exchange like Binance, KuCoin, or OKX. Once the USDT is deposited, initiate a withdrawal and select TRC20 as the network for the USDT transfer. This process effectively converts your USDT from ERC20 to TRC20, often with lower fees and faster transactions on the TRON network.