Convert between different cryptocurrency denominations for Ethereum and Bitcoin.
Cryptocurrencies use different denominations to represent values ranging from very small to very large amounts. Just as the dollar has cents, cryptocurrencies have their own subunits that make transactions practical at various scales.
Ethereum uses a system based on powers of 10, with Wei being the smallest unit. These units are named after prominent figures in computer science and cryptography.
| Unit | Value in Wei | Value in ETH | Named After |
|---|---|---|---|
| Wei | 1 | 0.000000000000000001 | Wei Dai (B-money creator) |
| Kwei | 1,000 | 0.000000000000001 | Charles Babbage |
| Mwei | 1,000,000 | 0.000000000001 | Ada Lovelace |
| Gwei | 1,000,000,000 | 0.000000001 | Claude Shannon |
| Szabo | 1,000,000,000,000 | 0.000001 | Nick Szabo |
| Finney | 1,000,000,000,000,000 | 0.001 | Hal Finney |
| Ether (ETH) | 1,000,000,000,000,000,000 | 1 | Base unit |
Gwei (Gigawei) is the most commonly used unit in Ethereum, especially for gas prices. When you see "gas price: 20 Gwei," it means each unit of gas costs 20 billion Wei. This denomination is practical because gas prices typically range from 1 to 500 Gwei.
Bitcoin has a simpler system but still uses multiple denominations to handle different transaction sizes. The smallest unit, the Satoshi, is named after Bitcoin's pseudonymous creator, Satoshi Nakamoto.
| Unit | Value in Satoshi | Value in BTC | Common Use |
|---|---|---|---|
| Satoshi (sat) | 1 | 0.00000001 | Smallest unit, microtransactions |
| Microbitcoin (uBTC) | 100 | 0.000001 | Small transactions |
| Millibitcoin (mBTC) | 100,000 | 0.001 | Medium transactions |
| Centibitcoin (cBTC) | 1,000,000 | 0.01 | Rarely used |
| Decibitcoin (dBTC) | 10,000,000 | 0.1 | Rarely used |
| Bitcoin (BTC) | 100,000,000 | 1 | Base unit, large transactions |
A Satoshi is the smallest unit of Bitcoin, representing 0.00000001 BTC. With Bitcoin's high value, Satoshis make it practical to price goods and services. For example, if Bitcoin is worth $50,000, one Satoshi equals $0.0005.
When sending an Ethereum transaction, you set a gas limit and gas price. If a transaction uses 21,000 gas at 50 Gwei:
Bitcoin fees are often displayed in Satoshis per byte (sat/byte). If a transaction is 250 bytes and the fee rate is 10 sat/byte:
Merchants often price items in mBTC or Satoshis for better readability. Instead of pricing something at 0.00025 BTC, it's clearer to say 0.25 mBTC or 25,000 Satoshis.
Cryptocurrency values fluctuate significantly, and their use cases range from microtransactions to large transfers. Multiple denominations provide:
Typical Gas Prices:
Typical Bitcoin Fees: