Crypto Unit Converter
Convert between BTC and satoshis, ETH and gwei, or ETH and wei instantly. A simple crypto unit converter with a reference table.
For informational purposes only. Not financial advice. Calculations are estimates and may not reflect your exact situation. Consult a qualified financial adviser for personalised guidance.
About Crypto Unit Converter
Quickly convert between common crypto denominations. Switch between BTC and satoshis, ETH and gwei, or ETH and wei with instant bidirectional conversion and a handy reference table.
Supported Conversions
The converter handles three unit pairs: BTC to satoshis (1 BTC = 100,000,000 sats), ETH to gwei (1 ETH = 1,000,000,000 gwei), and ETH to wei (1 ETH = 10^18 wei). Type in either field and the other updates instantly. The large-number arithmetic uses integer math to avoid floating point errors that would otherwise creep in with 18-digit values.
When You Need This
Gas fees on Ethereum are priced in gwei. Lightning Network invoices often show amounts in satoshis. Smart contract interactions deal in wei. This converter saves you the mental gymnastics of counting zeros. If you are looking to calculate profit on a crypto trade, the Crypto Profit Calculator handles that with fee support.
Reference Table
Each conversion mode includes a quick-reference table showing common amounts. This is handy for sanity-checking values or quickly understanding the scale. For other number system conversions like hex or binary, check the Number Base Converter. All conversions happen locally in your browser.
Frequently Asked Questions
How many satoshis are in 1 Bitcoin?
There are 100,000,000 (100 million) satoshis in 1 Bitcoin. A satoshi is the smallest unit of Bitcoin, named after Bitcoin's pseudonymous creator Satoshi Nakamoto.
How many gwei are in 1 ETH?
There are 1,000,000,000 (1 billion) gwei in 1 ETH. Gwei is the unit most commonly used for Ethereum gas prices.
How many wei are in 1 ETH?
There are 1,000,000,000,000,000,000 (10^18) wei in 1 ETH. Wei is the smallest denomination of Ether, similar to how a satoshi is the smallest unit of Bitcoin.
Why are crypto units so large?
Cryptocurrencies use very small base units to allow for precise transactions. When BTC costs tens of thousands of dollars, you need small units like satoshis to transact amounts worth a fraction of a cent. The same applies to ETH gas fees measured in gwei.
Is this converter accurate for very large numbers?
Yes. The converter uses precise integer arithmetic instead of floating point math, so it handles the full range accurately. This matters especially for ETH-to-wei conversions where numbers can be 18 digits long.