Many modern, self-custody software wallets have built-in exchange mechanisms.

You input how much LTC you want to spend, provide your external Bitcoin wallet address, and the platform generates a temporary LTC deposit address. Once they receive your Litecoin, they automatically convert it and shoot Bitcoin straight to your wallet.

You deposit your LTC onto the exchange, find the LTC/BTC trading pair, and place an order to sell your LTC for BTC. Platforms to use: Major exchanges like Coinbase or Kraken . 2. Instant Swap Services

Popular multi-currency wallets like Zengo , Exodus, or Trust Wallet. How to Buy Litecoin LTC Cryptocurrency for Beginners.

Non-custodial platforms like Changelly or ChangeHero . 3. Multi-Currency Wallet Swaps

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If you prefer not to keep your funds on an exchange or want to avoid setting up a full trading account, instant exchange services are highly efficient.