Peptide Cost Calculator
Enter what you paid, how many vials it bought and the amount in each. The calculator gives the cost per mg and per mcg, including shipping and tax if you add them, and the cost per portion when you enter an amount. Prices are only ever what you type.
Peptide Cost Calculator
Cost calculator
Enter the price, the number of vials and the amount in each.
Arithmetic only: it never suggests or assesses an amount. Nothing you type leaves your browser.
How cost per mg is worked out
total = price + shipping + taxcost per mg = total ÷ (vials × mg per vial)Example: $45 for one 10 mg vial is $4.50 per mg, or $0.0045 per mcg. A 250 mcg portion is about $1.13.
Money is worked in whole cents with exact decimals, and shown with sub-cent precision where it matters ($0.0045 per mcg).
Comparing offers fairly
- Compare cost per mg, not price per vial: vial sizes differ.
- Include shipping and tax. A cheaper vial with high shipping can cost more per mg.
- Only compare the same form (a vial with a vial, a capsule with a capsule). Different forms aren’t the same product.
Peptide Library’s Shop compares listed prices per mg across vendors, per compound and form.
Frequently asked questions
How do I calculate the cost per mg?
Divide the total you paid (including shipping and tax) by the total mg you bought: vials × mg per vial.
Does the calculator know prices?
No. It only uses the numbers you enter, and nothing you type is sent anywhere.
Related calculators and guides
- CalculatorReconstitution calculatorWork out concentration after adding bacteriostatic water, then the mL and U-100 units for any amount.
- CalculatorUnit converterConvert peptide units exactly: mg to mcg, concentrations (mg/mL to mcg/mL), and syringe volumes between mL, U-100 and U-40 units.
- CalculatorPeptide calculatorFree online peptide calculator for reconstitution, concentration, blends and mcg to mL.
- GuideHow to Use a Peptide CalculatorA step-by-step guide to using a peptide calculator: the three numbers you need, how to read the result, and how to check the answer yourself in under a minute.
Powered by Peptide Library
Keep a record, not just a result
Peptide Library is the free research and tracking platform behind this calculator, on the web, iPhone and Android.
- Schedules and remindersPlan entries and get reminded, with a calendar of past and upcoming ones.
- Logs and journalA history of every entry, with notes and check-ins.
- InventoryWhat’s left in each vial, with run-out and reorder dates.
- Research libraryProfiles for 200+ peptides, side-by-side comparison and human evidence summaries.
Get the app: App Store (tracking, no calculator) · Google Play (tracking and calculators)
Last reviewed · How the calculations work