Also it should be noted chronic methadone admistration and acute methadone admistration have different conversions. Like I mention earlier, it takes a few days of continual use for the methadone to build up to its peak level that you sustain. When converting doses at that point, a lower methadone dose from chronic use = the same dose of another opioid as a higher acute methadone dose. Methadone really isn't something that can easily be converted into another opioid. They have some sites that help you figure it out with morphine (which you then use to convert to other opioids), which you can easily find by googling. The conversion with morphine isn't linear. Its sort of a slope, so if you are using 10mg of methadone, the conversion should be about 30mg of morphine, but when converting 100mg of methadone to morphine, its not gonna be 300mg of morphine, as like I said, its not linear. (opioid conversion calculators SUCK for finding methadone equivalent doses, so don't bother using them. Also trying to calculate how much you should have is not the right way to go. don't look online to see how much you should be taking, let the methadone itself tell you how much you need. So keep going to the clinic and rise your dose based on actual need, not expectation.)
Another thing. You are not supposed to get high on methadone, so when they give you methadone, they are trying to give you enough to be out of WD and eliminate cravings. Not make you feel like you were taking shots of hydromorphone all day.
https://www.compassionandsupport.org/pdfs/professionals/pain/methadone_dose_conversion_guideline.pdf
note - it looks nicer in the pdf, but if people are to lazy to look at the link, here is the info. This is also just one of many sites talking about dose conversions.