Total Value Locked (TVL) is a metric that estimates the total value of digital assets deposited, staked, or otherwise “locked” into a blockchain application, usually a decentralized finance (DeFi) protocol. It is typically expressed in U.S. dollar terms by multiplying deposited token amounts by their current market prices.
What TVL measures on-chain
TVL focuses on assets sitting inside smart contracts, such as tokens supplied to a lending market, liquidity deposited into an automated market maker (AMM), or collateral posted to mint a stablecoin. For example, when users deposit ETH and stablecoins into a DEX liquidity pool, those funds become part of the protocol’s TVL. Similarly, assets supplied to a lending protocol contribute to TVL because they are locked in the protocol’s contracts to facilitate borrowing and interest payments.
Because TVL tracks capital committed to a protocol, it is often used as a proxy for adoption, liquidity depth, and user confidence. It can be calculated at different levels, including per protocol, per blockchain network, or across an ecosystem.
TVL vs. market cap and common caveats
TVL is not the same as market capitalization. Market cap reflects a token’s circulating supply multiplied by its price, while TVL reflects the value of assets deposited in a system. A project can have a high market cap with low TVL, or substantial TVL without a large native token valuation.
TVL also has limitations. It can change due to token price moves even if deposits stay constant, and it can be inflated by double counting when the same collateral is reused across protocols. Despite these caveats, TVL remains a widely cited benchmark for comparing DeFi platforms and gauging real on-chain usage, which matters for assessing liquidity, risk, and overall ecosystem health.