What is a peptide supply calculator?
A peptide supply calculator estimates how long your peptide inventory will last based on vial size, dosing frequency, and protocol length. It helps identify when you may run out, where waste occurs, and whether your cycle extends beyond safe reconstitution windows.
Stop Guessing When
You'll Run Out
Supply failure doesn’t happen suddenly. It happens quietly — until it stops your protocol.
Your Protocol Details
Enter your vial size, dose, and frequency.
1000mcg = 1mg
This forecast reflects protocol inputs and inventory only. It does not recommend dosing or purchasing changes.
Your Supply Timeline
Days Remaining
0
Days of supply
Estimated End Date
-
Mark your calendar
AI Storage Insights
Unlock Hidden Waste Metrics
See exactly how much product you lose to dead space and degradation.
Wasted Product
You are losing ~0.8mg per vial due to dead space.
Degradation Warning
Supply extends 12 days past safe reconstitution window.
Dosing Inefficiency
Current vial size creates 18% unavoidable waste.
Pro Inventory Planner
PROSupply Risk Factors
Supply Risk Factors
This forecast reflects protocol inputs only. Pro reveals inventory factors like waste and stability windows.
Most People Run Out for the Same Reasons
The “Rough Math” Mistake
Small rounding errors compound over weeks.
The Reconstitution Blind Spot
Loss during mixing and handling shortens supply.
The Mid-Cycle Panic Order
Late reorders increase downtime risk.
One-Off Awareness vs Ongoing Certainty
Free
Single supply calculation
- Accurate supply duration
- Basic date forecast
- No saved timelines
- No alerting
- No protocol context
Supply Continuity
For precise planning
- Saved supply timelines
- Reorder risk visibility
- Inventory overlap awareness
- Fewer interruptions
- Calm planning
What Becomes Obvious When You See the Timeline
"I didn’t realize how close I was to running out until I saw it visualized."
"This stopped my mid-cycle scramble. I order weeks ahead now."
"Planning feels boring now — in a good way. No more surprises."
Common Questions
How long does a peptide vial last?
It depends on vial size and dose. A 5mg vial dosed at 500mcg lasts 10 days.
Does reconstitution affect longevity?
Yes. Once mixed, shelf life drops. If your supply lasts 60 days but stability is 30, you'll need two vials.
Why do I always run out early?
Usually due to 'dead space' waste (liquid left in the needle hub) or slight over-drawing. Losing 0.05ml per shot adds up to a full dose lost every 10-20 injections.
How much peptide is lost per injection?
Standard insulin syringes can trap ~2-5 microliters. With Luer lock syringes, it can be much higher. This calculator's Pro mode estimates this loss.
Does this predict effectiveness?
No. This tool models inventory duration based on your inputs. It does not assess biological outcomes.
Know Your Timeline
Before It Forces a Decision
Educational use only. Not financial or medical advice.