How to Use the GLP-1 Dose Conversion Calculator
If you already know your peptide concentration in mg/mL, the Dose Volume Converter turns any prescribed mg dose into precise mL and U100 syringe units in two clicks. Faster than the full reconstitution flow when you've already mixed your vial.
1) Two-Input Tutorial
- Step 1 — Enter concentration in mg/mL. Tap a chip (1.0, 2.5, 5.0) or type a custom value. The chips cover the most common reconstitution math.
- Step 2 — Enter dose in mg. Same pattern: tap a chip or type custom. The calculator updates instantly.
- Read the output: injection volume in mL, syringe units on a U100 syringe, and a visual fill guide showing exactly how far to draw.
2) Worked Example
Concentration 2.5 mg/mL. Dose 0.5 mg.
- Volume = 0.5 ÷ 2.5 = 0.2 mL
- Syringe units = 0.2 × 100 = 20 units
- The visual syringe shows the meniscus exactly at unit 20.
When to Use This Tool
- You've already mixed your vial and know the mg/mL
- You changed your prescribed dose mid-vial and need to recalculate units
- You're checking a dose someone else gave you
- You want to compare what 1 mg looks like at 2.5 mg/mL vs 5 mg/mL
When to Use the Reconstitution Calculator Instead
If you're starting with a fresh dry vial, use the Reconstitution Calculator — it computes concentration for you from vial mg + BAC water, then runs the same dose math. Skip the conversion calculator unless you already know your concentration.
Tips
- If your dose needs more units than your syringe holds, the calculator shows a red warning and suggests a larger syringe or split injection.
- Round syringe units to the nearest whole number — fractional units aren't markable on a U100 syringe.
- Sign in with Google to save your concentration so it pre-fills next visit.
Try the dose converter
Concentration + dose → exact syringe units. Free, no sign-up.
Frequently Asked Questions
How many inputs does the GLP-1 dose conversion calculator need?
Two: concentration in mg/mL and dose in mg. Tap a chip for common values like 1.0, 2.5, or 5.0 mg/mL, or type a custom number. The calculator updates instantly with injection volume in mL, syringe units on a U100 syringe, and a visual fill guide.
When should I use the dose converter instead of the reconstitution calculator?
Use the dose converter when you've already mixed your vial and know your concentration, or when you've changed your prescribed dose mid-vial and need to recalculate units. The reconstitution calculator is better for fresh dry vials since it computes concentration from vial mg and BAC water.
Will the dose converter warn me if my dose exceeds my syringe size?
Yes. If your dose needs more units than the syringe holds, the calculator displays a red warning and suggests either using a larger syringe or splitting the dose into multiple injections. The visual fill guide also makes overflow visible at a glance.
Can I save my GLP-1 concentration so it pre-fills next time?
Yes. Sign in with Google to save your concentration value so it pre-fills automatically on your next visit. Without sign-in, the page resets between sessions, though you can also create a share link that encodes your inputs into the URL for bookmarking.
Should I round syringe units to whole numbers?
Yes, always round to the nearest whole unit. U100 insulin syringes only have integer-unit marks, so fractional values like 2.5 units cannot be drawn accurately. If your conversion lands on a fraction, either accept the rounding or dilute to a lower concentration for cleaner math.