How to Use This Calculator
For each compound, enter a name, the dose per injection in mcg, injections per day, cycle length in weeks, vial size in mg, price per vial and purity. Add a row for every compound in your cycle. Click Calculate cycle cost to see the vials and cost for each compound, the total cost, and the cost per day and per week.
Why Vial Price Alone Understates the Real Cost
The vial price only tells part of the story. Purity cuts the usable amount in every vial, and rounding up to whole vials means you often pay for more than the cycle uses. Bacteriostatic water, syringes, alcohol swabs and a sharps container usually add around $20 to $50 to an 8-week cycle, so add those on top of the total before you order.
Planning Alongside the Rest of a Protocol
Once the budget is set, the Peptide Vial Yield Calculator works out exactly how many vials a cycle of a given length actually requires at a given dose, which is the number this cost estimate should be built on rather than a rough guess. For cycles running more than one compound at a time, the Multi-Peptide Weekly Schedule Builder lays out the full injection calendar alongside the budget.
Who Should Use This
Researchers budgeting a single or multi-peptide cycle before ordering; anyone comparing vial sizes or prices from different suppliers.
What This Calculator Does
The Peptide Cycle Cost Estimator totals the cost of a research cycle for up to four peptides at once. For each peptide it works out the total micrograms needed, the whole vials to buy after adjusting for purity, and the subtotal, then shows the total cost, cost per day and cost per week.
Formula Used
Total mcg = Dose per injection × Injections per day × 7 × Cycle weeksUsable mcg per vial = Vial size (mg) × 1,000 × (Purity % ÷ 100)Vials = CEILING(Total mcg ÷ Usable mcg per vial)Total cost = Sum of (Vials × Price per vial)Cost per day = Total cost ÷ (Longest cycle in weeks × 7)Example Calculation
Limitations
Rounds up to whole vials but does not add reconstitution loss, syringe dead space, bacteriostatic water, consumables or shipping. Assumes the same dose every day for the whole cycle.
Frequently Asked Questions
How do I calculate the total cost of a peptide research cycle?
Multiply the cost per vial by the number of vials needed for your full cycle. Vials needed = (total dose per week × cycle weeks) ÷ dose per vial. The Cycle Cost Estimator does this math automatically for each compound and totals them across the full cycle.
How many vials of peptide will I need for a typical cycle?
This depends on the compound's potency, the dose, and cycle length. For example: a 500 mcg/day protocol over 8 weeks (56 days) requires 28,000 mcg total. If each vial contains 5,000 mcg, you need 5.6 → 6 vials. The calculator accounts for these variables automatically.
What additional costs should I factor into a peptide cycle budget?
Beyond the peptide cost itself, budget for: bacteriostatic water (BW), insulin syringes, alcohol swabs, sharps disposal containers, and any ancillary compounds. A realistic budget includes these consumables, which typically add $20-50 to an 8-week cycle.
Is it cheaper to run multiple peptides in a stack?
Stacking multiple compounds increases total cost proportionally. However, some research stacks use lower doses of each compound, which can be cost-effective if the combined effect is superior. The Cost Estimator lets you add multiple compounds and see the combined weekly and total spend.
How much does a peptide cycle cost?
It depends on dose, cycle length, vial size and price. The calculator multiplies the vials you need by the price per vial. For example, 250 mcg once a day for 8 weeks needs 3 vials of 5 mg at 99% purity, which is 3 x $35 = $105.
How much does this cost per month?
Take the cost per day from the calculator and multiply it by 30. For example, a cycle that costs $6.88 per day comes to about $206.40 per month.
How much is 500 mg of peptide?
Divide the vial price by the vial size in mg to get the price per mg, then multiply by 500. For example, a 5 mg vial at $35 is $7 per mg, so 500 mg costs $3,500.