I am using Flow Javascript Library to send Crypto Currency from One Wallet Address to another.
How do I calculate Gas Estimation?
If you start the emulator with --transaction-fees it will use the same gas fee algorithm as testnet/mainnet so then you can run the transaction locally and see the result there first?
If you are only doing a simple send FT the gas/fee will be very small. Here is an example https://flowscan.org/transaction/227b752908136da94f3006b5c14ef31495fc0ca27bae73732d68b8ef879fe23f
This uses 68 gas and the fee is 0.00000439 flow