What Is a Satoshi?
A satoshi (sat) is the smallest unit of Bitcoin. One Bitcoin equals 100,000,000 satoshis — named after Bitcoin's pseudonymous creator Satoshi Nakamoto. Because Bitcoin's price has risen dramatically over the years, most everyday transactions and Lightning Network payments are now denominated in satoshis rather than whole BTC.
Understanding satoshi denominations is essential for Lightning Network users, on-chain fee calculation, and making sense of small BTC amounts. For example, a transaction fee of 1,500 sats might cost just a few cents at today's prices — far more readable than 0.00001500 BTC.
Use the Crypto Converter to convert between Bitcoin and other cryptocurrencies, or explore stablecoins to understand dollar-denominated crypto assets.