$ETH A coin pair with ETH (Ethereum) represents a trading pair on a cryptocurrency exchange where Ethereum is one half of the pair, such as ETH/BTC or ETH/USDT. This allows users to trade ETH against another cryptocurrency or stablecoin. The first coin (ETH) is the base currency, and the second is the quote currency. For example, in ETH/USDT, you buy or sell Ethereum priced in Tether. ETH pairs are widely used due to Ethereum’s strong market presence and liquidity. Traders often use ETH pairs for arbitrage, portfolio diversification, or transitioning between altcoins and major crypto assets.