Cryptocurrency Unit Calculator

A cryptocurrency unit calculatorconverts between the different denominations of a blockchain's native currency. Every major blockchain uses integer arithmetic internally — Bitcoin stores balances in satoshis, Ethereum stores all values in wei, and Solana stores balances in lamports. Our cryptocurrency unit calculator converts between all denominations for Bitcoin, Ethereum, and Solana using BigInt arithmetic to avoid the floating-point precision errors that affect standard JavaScript number calculations. Live USD prices are fetched from the CoinGecko API so you can see the current market value of any denomination instantly.

1. 1. Select a Cryptocurrency: Choose Bitcoin (BTC), Ethereum (ETH), or Solana (SOL) from the cryptocurrency selector. The unit options update automatically to show all denominations for that blockchain.
2. 2. Enter Your Value and Unit: Select the input unit (e.g. Gwei, satoshi, lamport) and enter your amount. You can enter any decimal value — our BigInt engine handles full precision without floating-point rounding errors.
3. 3. View All Denominations and USD Value: Click Convert Units to see your amount expressed in every denomination for that blockchain. If live CoinGecko prices are available, the current USD value is shown at the top of the results.

• Bitcoin (BTC) 1 BTC = 100,000,000 satoshis — The primary unit used for large transactions and portfolio values.
• Millibitcoin (mBTC) 1 mBTC = 100,000 satoshis — Used in some exchanges and payment processors for mid-range amounts.
• Microbitcoin (μBTC) 1 μBTC = 100 satoshis — Also called "bits" — used for small payments and tipping.
• Satoshi (sat) 1 sat = 0.00000001 BTC — The smallest Bitcoin unit, named after creator Satoshi Nakamoto. Used in Lightning Network.

• Ether (ETH) 1 ETH = 10¹⁸ wei — The primary Ethereum unit used for transactions and DeFi.
• Gwei 1 Gwei = 10⁹ wei — The standard unit for Ethereum gas prices (e.g. "20 Gwei gas price").
• Mwei 1 Mwei = 10⁶ wei — Megawei — rarely used in practice but part of the denomination hierarchy.
• Kwei 1 Kwei = 10³ wei — Kilowei — used in some older Ethereum tooling.
• Wei 1 wei = 10⁻¹⁸ ETH — The smallest Ethereum unit. All EVM values are stored as wei integers.

• Solana (SOL) 1 SOL = 1,000,000,000 lamports — The primary Solana unit used for staking, DeFi, and NFT transactions.
• Milli-SOL 1 mSOL = 1,000,000 lamports — Used in some Solana tooling for mid-range amounts.
• Lamport 1 lamport = 0.000000001 SOL — The smallest Solana unit, named after Leslie Lamport. All on-chain balances are stored as lamports.

Standard JavaScript Number can only represent integers exactly up to 2⁵³ (about 9 quadrillion). Since 1 ETH equals 10¹⁸ wei, values above ~9 ETH would lose precision with regular arithmetic. Our cryptocurrency unit calculator uses JavaScript BigInt for all conversions, which handles arbitrarily large integers with exact precision — critical for smart contract development and on-chain balance verification.