BTC Unit Converter

Convert between BTC, mBTC, bits, and satoshi. Type an amount into any field and the rest update instantly — computed with exact integer arithmetic entirely in your browser, nothing is sent anywhere.

Convert

BTC (bitcoin)

mBTC (millibitcoin)

bits (microbitcoin)

sat (satoshi)

1 BTC = 1,000 mBTC = 1,000,000 bits = 100,000,000 satoshi.

How to use

Type an amount into any one of the BTC, mBTC, bits, or satoshi fields.
The other three fields update instantly, converted with exact integer arithmetic — no floating-point rounding, and nothing is sent over the network.
Keep editing any field to recalculate the rest, or press "Clear" to reset all four and start over.