dope math
local only
private hypothetical fentanyl calculator

dope math.

measure your habit, hypothetically. enter how much fentanyl you use, hypothetically, and dope math turns it into a rough read on actual fentanyl per day, then puts that number on the mme comparison scale.

what you enter region, unit, amount, and quality.
what you get a range for milligrams of fentanyl, hospital fentanyl units, mme, and familiar opioid comparisons.
what it is for making tolerance visible, so the scale of your exposure is easier to understand and explain.
data check: the calculator runs entirely on this device. nothing you put into the calculator is saved, sent, logged, or tracked. the optional dope census form is separate and only stores what you choose to type there.

runs entirely on your phone. nothing saved, sent, or tracked. rough by design — real purity swings a lot.
built on the same research methods covered in the new york times.

step 1 · your region

Where are you, roughly?

Just the broad region — we don't ask your city or track anything. It only sets the average purity we start from, since that runs so different across the map.

step 2 · how you buy

How do you buy it?

Why this question matters: a "bag" in one city can mean something totally different somewhere else. Some places talk in points or grams, some in bundles, some in stamp bags, and some do not call it dope at all.

The calculator keeps this part broad and private. The optional Dope Census + Urban Dictionary is where city-specific words, stamps, units, and weights can make the averages better.

step 3 · the quality

How good is it, hypothetically?

Compared to the usual stuff where you are — not the best you've ever heard about. Most people call run-of-the-mill dope a 7 out of 10.

7/10
run-of-the-mill
1 · bunk7 · average10 · fire
route still matters. how you use changes how much of it you absorb. dope math skips that choice here because those numbers are especially uncertain.
your reading
mg of fentanyl a day
Go slow
Especially after any time off. Do a tester. Wait.
Not alone
Use with someone, or Never Use Alone: 800-484-3731.
Naloxone
Keep narcan close; make sure people know where it is.
Check it
You can't see strength. Get it checked if you can.

help make it accurate

Nothing here was tracked. This ran entirely on your phone — nothing you entered was saved or sent, and this part is optional too.

The gauge is only as good as its numbers: what a bag really weighs, what it's called, city to city. None of that is secret — it's common knowledge where you are, nothing that points back to you. If you know your area's, it makes the reading truer for the next person.

Share what you know — anonymously →