Fees is paid in BTC for every bitcoin transaction calculated at rate sat/byte and based on transaction size which mainly depends on number of inputs and outputs
I will try to list few resources which can be helpful in deciding fees so that your transaction gets confirmed in time. Else, you can always pay 1–10 sat/byte fees if you don’t care about the confirmation time of transaction. There are few wallets which also do the estimation for you which may or may not be correct every time.
- https://btc.com/stats/unconfirmed-tx shows mempool stats and best fees for quick transaction
- http://bitcoinfees.earn.com shows an estimation about fees required for quickest transaction
- https://tradeblock.com/bitcoin to know mempool status and details
- https://www.blockchain.com/btc/unconfirmed-transactions to know unconfirmed transactions
- https://blockstream.info explorer shows you how much you saved or could have saved in case of segwit transaction, unconfirmed transaction estimation including number of blocks & mempool depth display
- https://p2sh.info/dashboard/db/fee-estimation?orgId=1 different btc transactions related stats
- https://bitcoinfees.github.io Bitcoin fee estimation program. Unlike fee estimation in Bitcoin Core, Feesim makes use of the current mempool state and transaction arrival rate, allowing it to be responsive to traffic surges
- https://twitter.com/bitcoin_fees
- https://twitter.com/CoreFeeHelper
- https://www.buybitcoinworldwide.com/fee-calculator/ enter number of inputs, outputs and legacy/segwit transaction to check fees for different confirmation times
- https://jochen-hoenicke.de/queue/ Mempool stats
- https://mempool.space another website which shows mempool stats and blocks getting confirmed
I will update this list if I know about more tools to help in fee estimation.
