How do I read a peptide reconstitution chart?

Find your vial strength down the left side and the amount of bacteriostatic water you added across the top. Where they meet is your concentration in mg per mL. The tables below then convert a dose into units.

What concentration should I aim for?

One that puts your usual dose between roughly 10 and 50 units on the barrel. That range is easy to read and a small misread costs you the least.

Does the chart change for different peptides?

No. The arithmetic is identical for every compound. Only the dose you look up changes, and whether it is written in mg or mcg.

Peptide reconstitution chart

Every common vial strength against every common water volume. Find your two numbers, read the concentration, then use the dose tables underneath.

Concentration, in mg/mL

Vial	1 mL	1.5 mL	2 mL	2.5 mL	3 mL	5 mL
2 mg	2	1.33	1	0.8	0.67	0.4
5 mg	5	3.33	2.5	2	1.67	1
10 mg	10	6.67	5	4	3.33	2
15 mg	15	10	7.5	6	5	3
20 mg	20	13.33	10	8	6.67	4
30 mg	30	20	15	12	10	6
60 mg	60	40	30	24	20	12

Concentration in mg/mL. Find your vial down the left and your water across the top.

IndependentThis site does not sell peptides and is not owned by a vendor. Every other calculator on page one of Google belongs to a shop.

The maths is openThe formula is written out on this page and the code behind it is a single file with an automated test suite covering 24 cases.

How it earnsAffiliate links on one clearly marked page, and nowhere else. Never inside the calculator.

ReviewedDose ranges and half-life figures last checked 29 August 2026.

Dose to units

All tables below assume a standard U-100 insulin syringe, where 100 units is 1 mL. On a U-40 syringe, multiply every number by 0.4.

Units for a 2 mg dose

Vial	1 mL	1.5 mL	2 mL	2.5 mL	3 mL	5 mL
2 mg	100	150	200	250	300	500
5 mg	40	60	80	100	120	200
10 mg	20	30	40	50	60	100
15 mg	13.3	20	26.7	33.3	40	66.7
20 mg	10	15	20	25	30	50
30 mg	6.7	10	13.3	16.7	20	33.3
60 mg	3.3	5	6.7	8.3	10	16.7

Units for a 0.5 mg dose

Vial	1 mL	1.5 mL	2 mL	2.5 mL	3 mL	5 mL
2 mg	25	37.5	50	62.5	75	125
5 mg	10	15	20	25	30	50
10 mg	5	7.5	10	12.5	15	25
15 mg	3.3	5	6.7	8.3	10	16.7
20 mg	2.5	3.8	5	6.2	7.5	12.5
30 mg	1.7	2.5	3.3	4.2	5	8.3
60 mg	0.8	1.2	1.7	2.1	2.5	4.2

Units for a 250 mcg dose

Vial	1 mL	1.5 mL	2 mL	2.5 mL	3 mL	5 mL
2 mg	12.5	18.8	25	31.2	37.5	62.5
5 mg	5	7.5	10	12.5	15	25
10 mg	2.5	3.8	5	6.2	7.5	12.5
15 mg	1.7	2.5	3.3	4.2	5	8.3
20 mg	1.2	1.9	2.5	3.1	3.8	6.2
30 mg	0.8	1.2	1.7	2.1	2.5	4.2
60 mg	0.4	0.6	0.8	1	1.2	2.1

Units for a 500 mcg dose

Vial	1 mL	1.5 mL	2 mL	2.5 mL	3 mL	5 mL
2 mg	25	37.5	50	62.5	75	125
5 mg	10	15	20	25	30	50
10 mg	5	7.5	10	12.5	15	25
15 mg	3.3	5	6.7	8.3	10	16.7
20 mg	2.5	3.8	5	6.2	7.5	12.5
30 mg	1.7	2.5	3.3	4.2	5	8.3
60 mg	0.8	1.2	1.7	2.1	2.5	4.2

If your exact combination is not on the chart, the calculator takes any numbers you like.

Free: The Protocol Pack, 25 printable pages. Including the part no other site writes down: what to do when you have already got it wrong. Wrong water volume, shook the vial, left it out overnight, drew the wrong units. Plus dosing cards for twelve compounds, titration planners and a vial log. Get it free.

Calculators by compound

RetatrutideVial, water and weekly dose to syringe units TirzepatideThe 2.5 to 15 mg ladder, converted SemaglutideThe 0.25 to 2.4 mg ladder, converted BPC-157mcg doses from a 5 or 10 mg vial ReconstitutionHow much water to add, and why it matters Dosing chartsPrintable unit tables for every compound Titration schedulesFull ladders with units at every step Reading a syringeU-100 vs U-40, and the 2.5x error How much water?Pick a volume that lands where you can read it

Common questions

How do I read a peptide reconstitution chart?: Find your vial strength down the left side and the amount of bacteriostatic water you added across the top. Where they meet is your concentration in mg per mL. The tables below then convert a dose into units.
What concentration should I aim for?: One that puts your usual dose between roughly 10 and 50 units on the barrel. That range is easy to read and a small misread costs you the least.
Does the chart change for different peptides?: No. The arithmetic is identical for every compound. Only the dose you look up changes, and whether it is written in mg or mcg.

Read this before you use the numbers. This is a unit-conversion tool. It converts a vial strength and a volume of bacteriostatic water into a concentration, a draw volume and a mark on an insulin syringe. It does not tell you what to take, whether to take it, or whether a compound is safe for you. Most of the compounds listed here are sold for laboratory research use and are not approved for human use. Nothing on this site is medical advice. Dosing decisions belong with a licensed clinician who knows your history. Always confirm the strength printed on your own vial rather than trusting a preset.