tirzepatide calculator
30 mg in 3 mL = 10 mg/mL, so 2.5 mg is 0.25 mL = 25 units on a U-100 syringe.
Sizes on sale: 10mg, 15mg, 20mg, 30mg, 60mg, 100mg. Choose a vial, the water and the amount per draw; prices are the lowest current US offers.
mL
doses used in the cited label or trials:
syringe · picked to fit the draw
price, vial size and certificate correction
USD
Lowest current US offer for this size.
mL
Most 2–15 mg vials hold 3 mL.
mg
From the lot certificate; it replaces the label amount.
%
draw 25 units
0.25 mL on a 0.3 mL U-100 syringe
- concentration
- 10 mg/mL
- per unit
- 100 mcg per unit
- full draws per vial
- 12
- cost per draw
- $12.50 · $5.00/mg
the working
- 30 mg ÷ 3 mL = 10 mg/mL
- 2.5 mg ÷ 10 mg/mL = 0.25 mL
- 0.25 mL × 100 = 25 units on a 0.3 mL U-100 syringe
- 30 mg ÷ 2.5 mg = 12 → 12 full draws
- $149.99 × 2.5 mg ÷ 30 mg = $12.50 per draw
If this is a prescription, the dose and volume on your pharmacy label take priority. Ask your pharmacist about any mismatch.
cheapest way to buy it · cost per draw of 2.5 mg
| vendor | size | price | $/mg | per draw | checked | calculate with this vial, or view it |
|---|---|---|---|---|---|---|
| Nova Peptide Supply | 100mg | $349.99 | $3.50 | $8.75 | 2026-11-06 | view, Tirzepatide 100mg at Nova Peptide Supply, opens in a new tab |
| American Peptides | 100mg | $428.00 | $4.28 | $10.70 | 2026-11-06 | view, Tirzepatide 100mg at American Peptides, opens in a new tab |
| Nova Peptide Supply | 60mg | $269.99 | $4.50 | $11.25 | 2026-11-06 | view, Tirzepatide 60mg at Nova Peptide Supply, opens in a new tab |
| Nova Peptide Supply | 30mg | $149.99 | $5.00 | $12.50 | 2026-11-06 | view, Tirzepatide 30mg at Nova Peptide Supply, opens in a new tab |
| LA Peptidesfeatured partnerCOA 30.42 mg | 30mg | $169.99 | $5.67 | $14.17 | 2026-11-03 | view, Tirzepatide 30mg at LA Peptides, opens in a new tab |
| American Peptides | 60mg | $390.00 | $6.50 | $16.25 | 2026-11-06 | view, Tirzepatide 60mg at American Peptides, opens in a new tab |
| LA Peptidesfeatured partnerCOA 15.26 mg | 15mg | $99.99 | $6.67 | $16.66 | 2026-11-03 | view, Tirzepatide 15mg at LA Peptides, opens in a new tab |
| Nova Peptide Supply | 10mg | $69.99 | $7.00 | $17.50 | 2026-11-06 | view, Tirzepatide 10mg at Nova Peptide Supply, opens in a new tab |
In-stock US offers checked in the last 7 days, before shipping. The featured partner is a paid placement and is labelled; order here is by price per mg.
FDA-approved · cited sources
doses of Tirzepatide used in research
FDA-approved as Zepbound (weight reduction, OSA) and Mounjaro (type 2 diabetes); both labels start at 2.5 mg once weekly and step up by 2.5 mg after at least 4 weeks on the current dose, to a maximum of 15 mg weekly. These are the amounts specific labels and studies used, linked to each source. They are references, not recommendations; a prescription label takes priority.
| source | who | amount and schedule | route |
|---|---|---|---|
| Zepbound label (FDA): 2.5 mg start, 2.5 mg steps to 5, 10 or 15 mg weekly FDA label · 2026 · 487cd7e7-434c-4925-99fa-aa80b1cc776b | Adults with obesity, or overweight with at least one weight-related condition; adults with moderate-to-severe OSA and obesity | 2.5 mg → 5 mg → 7.5 mg → 10 mg → 12.5 mg → 15 mg once weekly long-term (chronic) Maintenance is 5, 10 or 15 mg weekly for weight reduction, and 10 or 15 mg for OSA. 15 mg is the label maximum, shown here as the amount; 2.5 mg is for initiation only and is not a maintenance dose. Label revised 8/2026. | subcutaneous |
| Mounjaro label (FDA): type 2 diabetes, 2.5 mg steps to a 15 mg maximum FDA label · 2026 · d2d7da5d-ad07-4228-955f-cf7e355c8cc0 | Adults with type 2 diabetes (glycemic control; CV risk reduction in adults at high CV risk); pediatric patients 10 years and older with type 2 diabetes (maximum 10 mg weekly) | 2.5 mg → 5 mg → 7.5 mg → 10 mg → 12.5 mg → 15 mg once weekly long-term (chronic) The label starts at 2.5 mg weekly and, if more glycemic control is needed, raises the dose in 2.5 mg steps after at least 4 weeks on the current dose. Maximum is 15 mg weekly in adults and 10 mg weekly in pediatric patients. Label revised 8/2026. | subcutaneous |
| Phase 3 SURMOUNT-1 (NEJM 2022): 5, 10 or 15 mg weekly for 72 weeks phase 3 trial · 2022 · PMID 35658024 | 2,539 adults with BMI 30 or higher (or 27 or higher with a weight-related complication), without diabetes | 2.5 mg → 5 mg → 7.5 mg → 10 mg → 12.5 mg → 15 mg once weekly 72 weeks (including a 20-week dose-escalation period) Steps shown are for the 15 mg arm; the 5 mg and 10 mg arms stopped escalating at their target (start 2.5 mg, plus 2.5 mg every 4 weeks, per NCT04184622). Mean weight change at week 72 was -15.0% (5 mg), -19.5% (10 mg) and -20.9% (15 mg), vs -3.1% with placebo. | subcutaneous |
Sources checked Nov 4, 2026.
Tirzepatide 30mg in 3 mL
amount to syringe units
| amount | mL | U-100 units | U-40 units |
|---|---|---|---|
| 100 mcg | 0.01 | 1 | 0.4 |
| 250 mcg | 0.025 | 2.5 | 1 |
| 500 mcg | 0.05 | 5 | 2 |
| 1 mg | 0.1 | 10 | 4 |
| 2 mg | 0.2 | 20 | 8 |
| 2.5 mg | 0.25 | 25 | 10 |
| 5 mg | 0.5 | 50 | 20 |
One unit on a U-100 syringe is 0.01 mL; on a U-40 it is 0.025 mL.
every Tirzepatide vial size on sale
reconstitution chart
| vial | 1 mL water | 2 mL water | 3 mL water | 5 mL water |
|---|---|---|---|---|
| 10 mg | 10 mg/mL 10 units = 1 mg | 5 mg/mL 10 units = 0.5 mg | 3.333 mg/mL 10 units = 0.333 mg | 2 mg/mL 10 units = 0.2 mg |
| 15 mg | 15 mg/mL 10 units = 1.5 mg | 7.5 mg/mL 10 units = 0.75 mg | 5 mg/mL 10 units = 0.5 mg | 3 mg/mL 10 units = 0.3 mg |
| 20 mg | 20 mg/mL 10 units = 2 mg | 10 mg/mL 10 units = 1 mg | 6.667 mg/mL 10 units = 0.667 mg | 4 mg/mL 10 units = 0.4 mg |
| 30 mg | 30 mg/mL 10 units = 3 mg | 15 mg/mL 10 units = 1.5 mg | 10 mg/mL 10 units = 1 mg | 6 mg/mL 10 units = 0.6 mg |
| 60 mg | 60 mg/mL 10 units = 6 mg | 30 mg/mL 10 units = 3 mg | 20 mg/mL 10 units = 2 mg | 12 mg/mL 10 units = 1.2 mg |
| 100 mg | 100 mg/mL 10 units = 10 mg | 50 mg/mL 10 units = 5 mg | 33.333 mg/mL 10 units = 3.333 mg | 20 mg/mL 10 units = 2 mg |
10 units on a U-100 syringe is 0.1 mL. Every cell is exact arithmetic: amount ÷ water.
what the numbers mean · where they come from
terms and sources
- Label amount or measured amount. The calculator starts from the amount printed on the vial. A lot certificate’s measured content (net peptide content, in mg) can replace it for the vial that was tested. HPLC purity is a share of peak area, not a mass, so a purity-only correction is shown as an estimate. See HPLC, certificate of analysis and how to read a peptide COA.
- Concentration. Amount in the vial ÷ water added. Terms: reconstitution, bacteriostatic water, lyophilized.
- Syringe units. A volume: 0.01 mL per unit on a U-100 syringe, 0.025 mL on U-40. Units say nothing about the compound until the concentration is known.
- Cost per draw. Vial price × amount per draw ÷ vial amount, from the price per mg of a current offer. Offers come from the Tirzepatide price comparison; certificates from the COA library.
Arithmetic only, on the numbers entered. Amounts from labels or trials are cited references, not recommendations; PeptideTech does not give personal use instructions and does not test products.
short answers
Tirzepatide calculator questions
How much bacteriostatic water do I add to Tirzepatide 30mg?
Any volume the vial holds; 3 mL gives 10 mg/mL, so 10 units on a U-100 syringe holds 1000 mcg. More water makes each draw read more units. The table below shows 1–5 mL for every Tirzepatide vial size on sale.
What changes the calculated concentration?
Only two inputs: the amount of Tirzepatide in the vial and the water added. 30mg in 3 mL is 10 mg/mL; twice the water halves it, and the amount per draw then reads twice the units. A lot certificate's measured content replaces the label: LA Peptides's 15mg lot 1318 measured 15.26 mg, which in 3 mL is 5.0867 mg/mL. HPLC purity is a share of peak area, not a measured mass, so it is shown only as an estimate.
How many units is 2.5 mg of Tirzepatide?
With 30mg in 3 mL (10 mg/mL) it is 0.25 mL, or 25 units on a U-100 syringe; the vial holds 12 full draws.
What doses of Tirzepatide were used in research?
FDA-approved as Zepbound (weight reduction, OSA) and Mounjaro (type 2 diabetes); both labels start at 2.5 mg once weekly and step up by 2.5 mg after at least 4 weeks on the current dose, to a maximum of 15 mg weekly. The table on this page lists 3 sources with amounts, schedules and links.
What does Tirzepatide cost per mg?
The lowest current US price is $349.99 for 100mg at Nova Peptide Supply (about $3.50 per mg, checked 2026-11-06). The calculator turns any vial price into cost per draw.
How much Tirzepatide is really in the vial?
Lot certificates on file report measured content: for example LA Peptides's 15mg lot 1318 measured 15.26 mg at 99.8% purity. Use the certificate correction to calculate from the measured amount.
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