> ## Site index > Full index of Peptides.build at https://peptides.build/llms.txt. Use it to discover every page. # Insulin Syringe Units to mL: Chart, or Skip It Convert U-100 insulin syringe units to mL with a chart and formula, or skip the math with a prescribed peptide that arrives pre-mixed. URL: https://peptides.build/guides/insulin-syringe-units-to-ml/ Conversion chart 路 U-100 # Insulin syringe units to mL: chart, formula, or skip it Updated October 30, 2026 路 Pure arithmetic, no doses ## The short answer On a U-100 insulin syringe, 100 units equal 1 mL, so 1 unit is 0.01 mL. To convert, divide the units by 100: 10 units is 0.1 mL, 25 units is 0.25 mL and 50 units is 0.5 mL. Going the other way, multiply mL by 100. Units on the barrel measure volume only; how much of a medication is in that volume depends on the concentration printed on the vial label. **100 units**\= 1 mL on a U-100 syringe **1 unit**\= 0.01 mL **mL 脳 100**\= units ![BPC-157 prescription vial](/media/products/bpc-157.webp) US-supervised 路 all 50 states [BPC-157](https://peptides.build/protocols/bpc-157/)Covered by the HHS policy **$158**/mo*$949 billed every 6 months* - 馃嚭馃嚫 Prescribed by a licensed US provider - 馃嚭馃嚫 Made by a licensed US 503A pharmacy - Arrives pre-mixed and labeled - HealthProtect verified Pay over time at checkout![Klarna](/media/payments/klarna.png)![Afterpay](/media/payments/afterpay.png)![Affirm](/media/payments/affirm.png) Prescription required. Your provider decides if it is appropriate. Compounded medications are not FDA-approved. The chart ## U-100 insulin syringe units to mL chart Every value below is the same division: units 梅 100. The third column shows which standard U-100 syringe can hold that volume in one draw. U-100 insulin syringe: units to mL, 1 to 100 units | Units | mL | Fits in | | --- | --- | --- | | 1 unit | 0.01 mL | 0.3, 0.5 or 1 mL | | 2 units | 0.02 mL | 0.3, 0.5 or 1 mL | | 3 units | 0.03 mL | 0.3, 0.5 or 1 mL | | 4 units | 0.04 mL | 0.3, 0.5 or 1 mL | | 5 units | 0.05 mL | 0.3, 0.5 or 1 mL | | 6 units | 0.06 mL | 0.3, 0.5 or 1 mL | | 7 units | 0.07 mL | 0.3, 0.5 or 1 mL | | 8 units | 0.08 mL | 0.3, 0.5 or 1 mL | | 9 units | 0.09 mL | 0.3, 0.5 or 1 mL | | 10 units | 0.1 mL | 0.3, 0.5 or 1 mL | | 15 units | 0.15 mL | 0.3, 0.5 or 1 mL | | 20 units | 0.2 mL | 0.3, 0.5 or 1 mL | | 25 units | 0.25 mL | 0.3, 0.5 or 1 mL | | 30 units | 0.3 mL | 0.3, 0.5 or 1 mL | | 35 units | 0.35 mL | 0.5 or 1 mL | | 40 units | 0.4 mL | 0.5 or 1 mL | | 45 units | 0.45 mL | 0.5 or 1 mL | | 50 units | 0.5 mL | 0.5 or 1 mL | | 55 units | 0.55 mL | 1 mL | | 60 units | 0.6 mL | 1 mL | | 65 units | 0.65 mL | 1 mL | | 70 units | 0.7 mL | 1 mL | | 75 units | 0.75 mL | 1 mL | | 80 units | 0.8 mL | 1 mL | | 85 units | 0.85 mL | 1 mL | | 90 units | 0.9 mL | 1 mL | | 95 units | 0.95 mL | 1 mL | | 100 units | 1 mL | 1 mL | Values in between follow the same rule: 12 units is 0.12 mL, 33 units is 0.33 mL, 68 units is 0.68 mL. Prescribed, pre-mixed ## Or skip the mixing: prescribed and pre-mixed US-supervised 路 all 50 states [BPC-157](https://peptides.build/protocols/bpc-157/)Covered by the HHS policy **$158**/mo*$949 billed every 6 months* Pay over time at checkout![Klarna](/media/payments/klarna.png)![Afterpay](/media/payments/afterpay.png)![Affirm](/media/payments/affirm.png) Prescription required. Your provider decides if it is appropriate. Compounded medications are not FDA-approved. US-supervised 路 all 50 states [Wolverine Peptide Stack](https://peptides.build/protocols/wolverine-stack/)Blend: outside the HHS policy **$183**/mo*$1,099 billed every 6 months* Pay over time at checkout![Klarna](/media/payments/klarna.png)![Afterpay](/media/payments/afterpay.png)![Affirm](/media/payments/affirm.png) Prescription required. Your provider decides if it is appropriate. Compounded medications are not FDA-approved. The formula ## How do you convert units to mL? - **Units to mL:** mL = units 梅 100. Example: 35 units 梅 100 = 0.35 mL. - **mL to units:** units = mL 脳 100. Example: 0.2 mL 脳 100 = 20 units. - **Why 100:** "U-100" means the syringe is scaled for 100 units in every milliliter. It is printed on the package and usually on the barrel. - **U-40 is different:** U-40 syringes hold 40 units per mL, so 1 unit is 0.025 mL. Mixing up U-40 and U-100 changes the volume by two and a half times. Never read one with the other's chart. Units on the barrel never tell you how much active ingredient you are drawing. That depends on the concentration of the liquid in the vial, which is why a vial you mix yourself from powder adds a second calculation. Our [peptide calculator](https://peptides.build/tools/peptide-calculator/) does that arithmetic from the numbers on a label; it does not suggest a dose. Syringe sizes ## Which insulin syringe size shows which units? Standard U-100 insulin syringe sizes | Syringe | Holds | Line spacing | Good for | | --- | --- | --- | --- | | 0.3 mL (3/10 cc) | 30 units | Usually every 1 unit; some have half-unit marks | Small volumes, easier to read | | 0.5 mL (1/2 cc) | 50 units | Usually every 1 unit | Volumes up to 0.5 mL | | 1 mL (1 cc) | 100 units | Usually every 2 units | Volumes up to 1 mL | Line spacing varies by brand; read the scale printed on your own syringe. Reading the barrel ## How do you read an insulin syringe? 1. **Check the U number** on the package: U-100 or U-40. 2. **Check the size**: 0.3, 0.5 or 1 mL, and how many units each small line is worth. 3. **Read at the plunger's top edge**, the flat edge nearest the needle, not the tip of the cone. 4. **Remove air bubbles** before reading; a bubble takes up volume. 5. **Follow your prescription label.** The volume to draw comes from your prescriber or pharmacist, never from a chart. Or skip it ## Or skip it: a pre-mixed, labeled vial Units-to-mL math often starts with a vial of powder: mix it with bacteriostatic water, then work out what to draw. A prescription removes the mixing step. At Peptides.build a licensed US provider reviews a five-minute intake, and a licensed 503A pharmacy ships the protocol cold-chain, already reconstituted and labeled with the concentration: BPC-157 from $158/mo on 6 months. See [pre-mixed peptides](https://peptides.build/pre-mixed-peptides/) and [BPC-157 pricing](https://peptides.build/pricing/bpc-157/). Why Peptides.build ## Prescribed by a provider. Made by a pharmacy. Verified. **Prescribed**A licensed US provider reviews your intake and prescribes only if it is appropriate. Physician oversight by Arora Health & Aesthetics, LLC. **Pharmacy-made**A licensed US 503A pharmacy compounds it for you and ships it directly, cold-chain. Nothing is mixed by us, and nothing is mixed by you. **Verified**Peptides.build is a HealthProtect verified telehealth brand. Check the public register entry yourself. Common questions ## FAQ ### How many mL is 10 units on an insulin syringe? 0.1 mL on a U-100 syringe. Divide the units by 100: 10 梅 100 = 0.1. ### Is 10 units equal to 1 mL? No. On a U-100 syringe, 10 units is 0.1 mL. It takes 100 units to make 1 mL. ### Is 20 units 0.5 mL? No. 20 units is 0.2 mL on a U-100 syringe. 0.5 mL is 50 units. ### Is 50 units the same as 0.5 mL? Yes, on a U-100 syringe. 50 梅 100 = 0.5 mL, which also fills a 0.5 mL syringe to its top line. ### Is 5 units 0.5 mL? No. 5 units is 0.05 mL. 0.5 mL is 50 units, ten times more. ### Is 40 units equal to 1 mL? Only on a U-40 syringe, which is marked for 40 units per mL. On the far more common U-100 syringe, 40 units is 0.4 mL. Check the U number printed on the syringe package before you read the barrel. ### Is a milligram the same as a unit on the syringe? No. A unit on the barrel is a measure of volume (0.01 mL on U-100). A milligram is an amount of a substance. Converting one to the other needs the concentration on the vial label, so ask the prescriber or pharmacist, or use a calculator with the label in front of you. ### What are the different insulin syringe sizes? The common U-100 sizes are 0.3 mL (30 units), 0.5 mL (50 units) and 1 mL (100 units). The smaller the syringe, the more space between each line, which makes small volumes easier to read. ### Can I skip the units math entirely? With a prescribed, pre-mixed vial, much of it. At Peptides.build a licensed 503A pharmacy ships the protocol already reconstituted and labeled with its concentration, so there is no powder to mix. BPC-157 is $163 month to month or $158/mo on 6 months. Your prescriber's instructions still tell you what to draw. Prescribed, not mixed at home ## Or skip the math: pre-mixed A licensed US provider reviews a short online intake. If a prescription is appropriate, a licensed US 503A pharmacy fills it and ships it cold-chain, already reconstituted and labeled with the concentration. - [BPC-157: plans, who it is for, FAQ](https://peptides.build/protocols/bpc-157/) - [Wolverine Stack: plans, who it is for, FAQ](https://peptides.build/protocols/wolverine-stack/) - [Every protocol price, side by side](https://peptides.build/pricing/) - [Our pharmacies and provider](https://peptides.build/pharmacy-providers/) - By state: [California](https://peptides.build/states/california/) 路 [Florida](https://peptides.build/states/florida/) 路 [Texas](https://peptides.build/states/texas/) 路 [Nevada](https://peptides.build/states/nevada/) 路 [Maryland](https://peptides.build/states/maryland/) Sources ## Where these facts come from 1. [MedlinePlus (U.S. National Library of Medicine): Giving an insulin injection](https://medlineplus.gov/ency/patientinstructions/000660.htm) 2. [MedlinePlus: Drawing medicine out of a vial](https://medlineplus.gov/ency/patientinstructions/000530.htm) 3. [Learning About Diabetes: Reading a syringe (PDF)](https://learningaboutdiabetes.org/wp-content/uploads/pdfs-medicine/ReadingaSyringeEN.pdf) 4. [HHS 503A peptide enforcement-discretion policy (510(k) syringe condition)](https://www.hhs.gov/sites/default/files/hhs-503a-peptide-enforcement-discretion-policy-appendix-b.pdf) This page is educational and is not medical advice. Compounded medications are not FDA-approved. No results are implied or guaranteed. A licensed provider decides whether any protocol is appropriate for you, and sets any dose.