I want to send $533 to a company. I have $443.25 in my Coinbase account. And $110.56 balance in my Electrum account. Total of $553.81.
$553.00
- 533.00
$20.81
I believe the BTC transfer fee is around $20.00. How do I determine how much the transfer fees are from both Electrum and Coinbase to calculate or determine I'm sending the guy the correct amount of $533.00?
Most probably you don't have dollars at Coinbase, you clearly have no dollars in Electrum and probably you don't have to send dollars to that company, so let's talk in bitcoin/satoshi.
What I would do is:
1. Withdraw from Coinbase to Electrum
2. When [1] whas confirmed, enter that 533 or whatever dollars into
http://preev.com/ and see how much Bitcoin that is. Maybe round up
a tiny bit to make sure you are OK (555$?)
3. Copy the preev bitcoin amount into Electrum's amount in the send page. Fill the other fields too (recipient address).
4. Check the recommended fee/vByte at
https://mempool.space/ and set that for sending. And send.
Electrum will send the money to "that company" and will also send back to you the remaining change, which may even be the equivalent of some 15-20$, depending on Bitcoin price fluctuation and how full the mempool (network) is.