Sats/vB Meaning

Sats/vB (Satoshis per Virtual Byte) is the unit used to measure the Gas Price or transaction fee density on the Bitcoin network. Unlike traditional banking where fees are based on the amount of money sent, Bitcoin fees are based on the size of the transaction data in bytes.

A transaction sending $1 million can cost the same as a transaction sending $1, if they both take up the same amount of space on the blockchain.The vB (Virtual Byte) was introduced with the SegWit upgrade to create a fair pricing model for different types of data. SegWit transactions move some data to a separate Witness area, which is cheaper for nodes to store.

To calculate the total fee, you multiply the transaction size by the current market rate in sats/vB. During periods of high demand, users must bid more sats/vB to incentivize miners to include their transaction in the next block.For users, understanding sats/vB is the key to saving money.

By using modern address types (like Native SegWit or Taproot), a user can reduce the Virtual Size of their transaction, allowing them to pay a lower total fee while still offering a competitive sats/vB rate. Most wallets now offer a Fee Estimator that analyzes the current mempool to suggest a sats/vB rate that will result in a confirmation within a certain number of blocks.