What is Cryptocurrency Unit Converter?

The Cryptocurrency Unit Converter converts between denominations of popular cryptocurrencies. Go from Bitcoin to Satoshi, Ether to Wei, or Gwei to Ether without memorizing conversion factors.

Supported networks include Bitcoin (BTC, mBTC, µBTC, Satoshi), Ethereum (Ether, Finney, Szabo, Gwei, Mwei, Kwei, Wei), BNB Smart Chain (BNB, Gwei, Wei), Avalanche (AVAX, nAVAX, Wei), Solana (SOL, Lamport), Cardano (ADA, Lovelace), Polkadot, XRP, Dogecoin, and Litecoin. There's also a Custom token mode where you set the decimal precision yourself — 6 for USDC and USDT, 8 for WBTC, 18 for most ERC-20 tokens — and switch between the human-readable amount and the raw on-chain integer. Conversions use the exact base-unit multipliers defined by each protocol, so the figure you copy matches what a wallet or smart contract expects.

How to use

1. Select the cryptocurrency (Bitcoin, Ethereum, etc.) and choose the source unit — for example, BTC or Satoshi.
2. Enter the amount you want to convert and pick the target unit from the dropdown.
3. Every result is editable: type into any denomination card to convert in reverse, and copy any value straight into a wallet or smart contract.

When to use

• Setting gas limits in a Solidity transaction where the field expects raw Wei.
• Reading Satoshi values in a Bitcoin block explorer and converting them back to BTC.
• Reviewing a fee that's quoted in Gwei before approving a swap in MetaMask.

Result

A developer converts 0.005 ETH to Wei and gets 5,000,000,000,000,000 — the exact value needed for a Solidity function call.

FAQ

Why does Ethereum need three different units?

Wei is the smallest indivisible unit, so smart contracts work in Wei to avoid floating-point errors. Gwei (10^9 Wei) is the common scale for gas prices. Ether (10^18 Wei) is what humans actually quote. The older Solidity denominations Finney (10^15 Wei), Szabo (10^12 Wei), Mwei (10^6 Wei), and Kwei (10^3 Wei) still show up in legacy contracts and geth output, which is why this tool includes them all.

What's a Satoshi and why are there 100 million of them per Bitcoin?

Bitcoin was designed with 8 decimal places, so 1 BTC = 100,000,000 Satoshis. The unit is named after Satoshi Nakamoto. Lightning Network and on-chain fees are usually quoted in Satoshis because BTC prices are too small to read cleanly.

Does this tool fetch fiat (USD/EUR) prices?

Not from a price feed. To get a ballpark figure, type today's spot price into the USD price field — the result card will then show the approximate USD value next to the denomination. The number is informational only; for accurate accounting use a live source.

Are the conversion factors correct for new tokens that fork?

The multipliers for listed coins come straight from each network's protocol spec and match the reference implementations as of the build. For an arbitrary ERC-20 token with non-standard decimals, switch to Custom token mode and type the token's decimal count — the tool then converts between the readable amount and the raw integer a contract stores, no separate entry needed.

Why do Lamports use 9 decimals and Lovelaces 6?

Each chain picks its own divisibility. Solana settled on 1 SOL = 10^9 Lamports for fee precision. Cardano went with 1 ADA = 10^6 Lovelaces. Picking the right unit means matching the chain's native API, not guessing.

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