I can't remember if it was haveibeenpwned.com or some other site, but I seem to recall once a few years ago checking my email on a site which also showed you the first two characters of the password which had been compromised. Maybe it has since been discontinued because of security concerns, but I found it really useful at the time because it let me know that the leaked password was an old one that I hadn't used in…
You get a list of corresponding hash suffixes and check if yours is there. https://haveibeenpwned.com/api/v2/#SearchingPwnedPasswordsBy...