How many mg is 20 units of tirzepatide? (and 40, 50, 30…)

Units measure liquid, not drug. 20 units is 0.2 mL — and how much tirzepatide is in 0.2 mL depends entirely on the vial. Find your concentration along the top, read across.

20 units of tirzepatide is 1 mg at 5 mg/mL, 2 mg at 10 mg/mL, 4 mg at 20 mg/mL, 8 mg at 40 mg/mL. The sum is units ÷ 100 × mg/mL.

Tirzepatide: units → mgU-100 syringe

Units drawn

Concentration mg/mL

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Units and the vial's concentration.

The table

Milligrams of tirzepatide delivered by a draw, at each common vial concentration. Red: above the 15 mg maximum — check the label before injecting.
Units	mL	5 mg/mL	10 mg/mL	20 mg/mL	40 mg/mL
5	0.05	0.25	0.5	1	2
10	0.1	0.5	1	2	4
12.5	0.125	0.625	1.25	2.5	5
15	0.15	0.75	1.5	3	6
20	0.2	1	2	4	8
25	0.25	1.25	2.5	5	10
30	0.3	1.5	3	6	12
40	0.4	2	4	8	16 ✗
50	0.5	2.5	5	10	20 ✗
60	0.6	3	6	12	24 ✗
75	0.75	3.75	7.5	15	30 ✗
100	1	5	10	20 ✗	40 ✗

How many mg is 20 units of tirzepatide?

At 5 mg/mL, 1 mg. At 10 mg/mL, 2 mg. At 20 mg/mL, 4 mg. At 40 mg/mL, 8 mg. 20 units is 0.2 mL. It's the starting dose (2.5 mg) at 12.5 mg/mL, which isn't a common vial — so if you were told "20 units", double-check which concentration that was worked out for.

How many mg is 40 units of tirzepatide?

At 5 mg/mL, 2 mg. At 10 mg/mL, 4 mg. At 20 mg/mL, 8 mg. At 40 mg/mL, 16 mg. 40 units is 0.4 mL — 4 mg at 10 mg/mL, 8 mg at 20 mg/mL. Neither is a rung on the standard ladder, which goes 2.5 → 5 → 7.5 → 10, so a prescriber putting you on 40 units has chosen an in-between dose on purpose, or the concentration isn't what you think it is.

How many mg is 50 units of tirzepatide?

At 5 mg/mL, 2.5 mg. At 10 mg/mL, 5 mg. At 20 mg/mL, 10 mg. At 40 mg/mL, 20 mg. Is 50 units a lot? At 10 mg/mL it's 5 mg — a normal second step on the ladder. At 20 mg/mL it's 10 mg, a common landing dose. At 40 mg/mL it's 20 mg, which is above the 15 mg maximum. The number of units on its own tells you nothing; the same 50 is routine in one vial and a stop-and-check in another.

How many mg is 30 units of tirzepatide?

At 5 mg/mL, 1.5 mg. At 10 mg/mL, 3 mg. At 20 mg/mL, 6 mg. At 40 mg/mL, 12 mg. That's 0.3 mL of liquid; the milligrams follow the concentration.

How many mg is 60 units of tirzepatide?

At 5 mg/mL, 3 mg. At 10 mg/mL, 6 mg. At 20 mg/mL, 12 mg. At 40 mg/mL, 24 mg. That's 0.6 mL of liquid; the milligrams follow the concentration.

How many mg is 10 units of tirzepatide?

At 5 mg/mL, 0.5 mg. At 10 mg/mL, 1 mg. At 20 mg/mL, 2 mg. At 40 mg/mL, 4 mg. That's 0.1 mL of liquid; the milligrams follow the concentration.

How many mg is 12.5 units of tirzepatide?

At 5 mg/mL, 0.625 mg. At 10 mg/mL, 1.25 mg. At 20 mg/mL, 2.5 mg. At 40 mg/mL, 5 mg. That's 0.125 mL of liquid; the milligrams follow the concentration.

Why the same units can be a normal dose or a dangerous one

Because the units never change and the vial does. People work out "my dose is 50 units" in month two, draw 50 every week, and then a vial arrives at a different concentration — and 50 units is now twice or four times the milligrams. The mg dose is the thing that stays fixed. The units are what that dose happens to look like in this vial. Re-do the sum whenever a new vial arrives, from the label, every time.

Going forward instead — milligrams to units — is one page per dose: 2.5 mg · 5 mg · 7.5 mg · 10 mg · 12.5 mg · 15 mg. The whole ladder: the tirzepatide chart. Units to mL with no drug involved: here.