How to Calculate the Fee for Transferring SOL?

[ronaldoguedess]

Hi everyone,
I simulated a transaction using the RPC simulateTransaction and received the unitsConsumed value, which is "unitsConsumed": 150.

Is this the correct way to calculate the transaction fee?
Total Fee = 150 * 0.000005 SOL = 0.00075 SOL

Could someone confirm if this formula is accurate or if there's another factor I need to consider?

Additionally, I'm seeing different fee values across different wallets for the same transaction:

Trust Wallet: 0.000006 SOL
Phantom Wallet: 0.003 SOL
My test shows: 0.00075 SOL

Why are these values different? Is there something specific to each wallet's fee structure that I need to be aware of?