BTC to Sats
1,000,000,000,000
Sats to BTC
8e-8
How it works
The Cryptocurrency Unit Converter converts between the common denominations of major cryptocurrencies: BTC, ETH, BNB, SOL, and others. Convert Bitcoin (BTC) to satoshis, ETH to gwei to wei, and view the USD equivalent at the current market rate.
Blockchain transactions are denominated in the smallest unit of a cryptocurrency — a Bitcoin is 100,000,000 satoshis, and 1 ETH is 1,000,000,000 gwei (or 1,000,000,000,000,000,000 wei). When working with smart contracts, gas fees, or on-chain transactions, understanding and converting between these units is a daily task for developers and traders.
Denomination reference: - Bitcoin: 1 BTC = 1,000 mBTC (millibits) = 1,000,000 μBTC (bits) = 100,000,000 satoshis - Ethereum: 1 ETH = 1,000 mETH = 1,000,000 μETH = 1,000,000,000 gwei = 10^18 wei - Gas fee context: Ethereum gas prices are quoted in gwei (e.g., "20 gwei gas price")
How to use it: enter any amount in any unit and all other denominations update instantly. The USD equivalent is calculated using a current market rate (fetched and cached). Switch between BTC, ETH, BNB, SOL, and other supported assets using the currency selector.
Developer use case: when writing Ethereum smart contracts or scripts, amounts are specified in wei (the smallest indivisible unit). Entering a human-friendly ETH amount here and reading the wei value avoids off-by-18-decimal errors that have caused costly bugs.
Privacy: unit conversion is pure math. The only external request is the price feed fetch (optional, disable to work fully offline).
Frequently Asked Questions
- A satoshi is the smallest divisible unit of Bitcoin: 1 BTC = 100,000,000 (100 million) satoshis. Named after Satoshi Nakamoto, Bitcoin's pseudonymous creator. Micro-transactions, Lightning Network payments, and on-chain fees are often quoted in satoshis. 1 satoshi = $0.00057 at a BTC price of $57,000.
- Gwei is a denomination of ETH: 1 ETH = 1,000,000,000 gwei (1 billion). Gas prices are quoted in gwei because the numbers are more human-readable — '20 gwei per gas unit' is easier to work with than '0.00000002 ETH'. Gas fees are set in gwei and fluctuate based on network demand.
- Wei is the smallest unit: 1 ETH = 10^18 wei (1 quintillion wei). Wei is named after Wei Dai, cryptographer and creator of b-money. Smart contracts operate on wei arithmetic — a transfer of 1 ETH in Solidity is written as 1000000000000000000 wei (or 1 ether in Solidity's unit system).
- This tool converts between denominations of the same cryptocurrency (BTC to satoshis, ETH to gwei) — not between different cryptocurrencies. For cross-cryptocurrency conversion, you need a currency exchange calculator using current market exchange rates.