The ATM machine uses mBTC to show an easier way of showing the amount of BTC the user is purchasing or selling. In this way, it avoids showing the unnecessary long string of digits but instead, the ATM screen shows you a whole a number for a better and easier visual.
The conversion rate for mBTC to BTC is as follows:
1. 1 mBTC = 0.001 BTC
e.g. 1270 mBTC = 1.27 BTC
2. 1 BTC = 1000 mBTC
e.g. 10.12 BTC = 10120 mBTC
For a quick mBTC to BTC calculator, click here!