A satoshi (sat) is the smallest unit of Bitcoin, equal to 0.00000001 BTC or one hundred millionth of a Bitcoin. It is named after Satoshi Nakamoto, the pseudonymous creator of Bitcoin. Just as the US dollar is divided into 100 cents, Bitcoin is divisible into 100 million satoshis. This small unit size allows Bitcoin to remain divisible and transactable even as the price per BTC increases. In practice, most micropayments and small transactions on the Bitcoin network are denominated in satoshis.
Bitcoin has several recognized units, each serving different purposes. Satoshi (sat) is the base unit (1 sat = 0.00000001 BTC). Millibitcoin (mBTC) equals 100,000 satoshis or 0.001 BTC. Bitcoin (BTC) is the primary unit and equals 100 million satoshis. Understanding these denominations is essential for reading transaction fees, setting payment amounts, and understanding blockchain data.
Bitcoin fees are typically quoted in satoshis per byte (sat/B) or satoshis per vbyte (sat/vB). Understanding satoshi-level conversions is critical for traders, developers, and anyone interacting with the Bitcoin blockchain. As Bitcoin price increases, the satoshi-denominated perspective helps users understand the value of small amounts without dealing with very small decimal numbers. Instead of transacting "0.00001 BTC," users can say "1000 satoshis," which is clearer and more intuitive.
Enter an amount in the input field, select a unit (satoshi, BTC, or mBTC), and the tool instantly converts to all other units and displays the USD equivalent using live Bitcoin prices. Click any preset button to quickly set common amounts. The USD conversion updates whenever the BTC price feed refreshes, ensuring you see current market rates. Click Copy Results to copy all conversions to your clipboard.
This converter fetches live Bitcoin price data from the Binance API through TerminalFeed's secure backend, ensuring accurate USD conversions at all times. Price updates are cached to minimize API calls. If the price feed becomes unavailable, the last known price is used. The live price display at the top of the page shows the current BTC/USD rate in real-time.
This tool runs 100% client-side in your browser. No personal data is transmitted. Your calculations never leave your machine. There are no usage limits, no account required, and no telemetry tracking. Bitcoin price data is fetched from TerminalFeed's API with full CORS support, making the tool accessible from any domain.