I made this tool where you can plot your unconfirmed transaction and see how far it is from the next block.
https://bitcoindata.science/bitcoin-fee-size-calculator.html

Additionally, if you didn't make a transaction yet, you can just look at mempool size grouped by fee rate and see how far a transaction with a fee rate selected by you would be from the next block size. It might be useful now, the network is very congested.