Peptide Calculator
Select your peptide, enter the vial amount, prepared solution volume, and target dose — get your exact U-100 syringe units with a visual draw guide. No sign-up, no math errors.
Three inputs. One transparent result.
How it works
The calculator follows the same unit-conversion path every time, so you can inspect the numbers instead of trusting a black box.
Enter vial amount
Use the total peptide amount printed on the vial label, in milligrams.
Add volume and dose
Enter the liquid volume already added and the target dose from your source.
Verify every output
Review concentration, mL, U-100 units, warnings, and the formula before saving.
The numbers you need, without the guesswork
Built for clarity
A focused calculator experience that keeps inputs, results, warnings, and units in one place.
Live results
Every result updates as you type, with concentration, mL, syringe units, and estimated doses shown together.
Reverse dose check
Start with a known concentration and drawn U-100 units to verify the corresponding mL, mcg, and mg.
U-100 visual guide
Compare the calculated units with 30, 50, or 100-unit syringe capacities before recording a result.
Transparent formulas
See the exact relationships between mg, mcg, mL, concentration, and U-100 units.
Input warnings
Capacity, low-volume, vial-size, and impossible-dose checks help catch common entry mistakes.
Private saving
Calculate anonymously. Sign in only when you want to save a result to your private dashboard.
Worked example
5 mg vial + 2 mL liquid + 250 mcg dose
This reference example is also the calculator default, making it easy to verify the formula before entering your own values.
Concentration
2.5 mg/mL
Dose volume
0.1 mL
U-100 syringe
10 units
Estimated doses
20
Every conversion, shown plainly
Formula
The calculator normalizes the dose to milligrams, then applies concentration and U-100 volume relationships.
FORMULA 1
Concentration
vial mg ÷ liquid mL = mg/mLFORMULA 2
Dose volume
dose mg ÷ concentration = mLFORMULA 3
Syringe units
dose mL × 100 = U-100 unitsPeptide calculator questions
FAQ
Clear answers about formulas, units, privacy, and the limits of this educational tool.
Keep useful calculations in one place
The calculator is free and anonymous. Create an account only when you want to save and revisit a result.
Open calculatorImportant safety disclaimer
This calculator provides mathematical conversions only. It does not verify a product, recommend a dose, or provide medical advice. Confirm the vial label, concentration, syringe type, and instructions with a licensed clinician or pharmacist.
Read the full disclaimer