Enter stock and sales inputs
Add units currently in stock, your average daily sales rate, and the aging threshold in days that counts as "too long" in the warehouse for this SKU.
INVENTORY AGING ANALYSIS
InventoryAge
Enter units in stock, average daily sales rate, and an aging threshold to see days-of-inventory-on-hand and whether stock is aging past your threshold.
- Uses your inputs in a transparent calculation
- Instant result with practical next steps
- No signup required
Planning guidance only. Validate important decisions with customer evidence and your delivery team.
YOUR INPUTS
Build your result
Complete every field. The result updates only when you choose Calculate.
How it works
We calculate days-of-inventory-on-hand
Days-on-hand is units in stock divided by average daily sales rate, then compared directly against your aging threshold.
Get an aging verdict and days over threshold
The result flags whether stock is within a healthy range, aging, or aged, and shows exactly how many days over threshold it currently sits.
Continue learning: MVP development checklist · Which MVP metrics matter?
Frequently asked questions
Does InventoryAge connect to my warehouse management system?
No. InventoryAge computes results only from the figures you enter — it does not connect to a live WMS, ERP, or inventory database. It is a quick planning calculator.
What sales rate should I use if demand is seasonal?
Use a recent average that reflects the period you care about — for example, the last 30 days for near-term aging risk, or a longer average if you want a smoother baseline.
What aging threshold should I set?
This depends on your category — perishables might use 7-14 days, general retail 60-90 days, and slow-moving industrial parts could be 180+ days. Use your own shelf-life or obsolescence policy.
Why does the tool use a 1.5x threshold multiplier for the middle tier?
It is a simple, transparent way to separate "just crossed the line" stock from stock that is meaningfully aged and needs action, without requiring a complex model.
Is this the same as an inventory turnover ratio?
It is related — days-on-hand is the inverse of turnover expressed in days. This tool focuses on aging against a threshold rather than a turnover ratio benchmark.
How We Compare
| Feature | MVPHub | Cin7 | Fishbowl |
|---|---|---|---|
| Instant single-SKU aging calculation | Included | Limited | Limited |
| Live multi-warehouse inventory sync | Not included | Included | Included |
| No signup required to try the calculation | Included | Not included | Not included |
| Automated reorder and purchasing workflows | Not included | Included | Included |
Cin7 and Fishbowl provide full inventory management with live multi-warehouse sync and purchasing automation. MVPHub gives a fast, transparent aging check from figures you enter, with no setup.
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