Amazon Deadstock Calculator (Free, 2026) — Find Dead SKUs in 60 Seconds
TL;DR
Your dashboard shows revenue. It does not show that 30–40% of your cash is buried in SKUs that will never sell at current velocity. The formula is one line. Below is the math, a worked example, and a free deadstock calculator that does it for you in 60 seconds.
Most Amazon sellers I talk to in India and globally know they have a deadstock problem. Few can name a number. Fewer can name the SKUs. Almost none can show the formula their tool uses.
That's the gap this post closes. By the end, you'll have the exact deadstock formula used inside SLM, a worked example on five real-looking SKUs, and a calculator you can use right now.
The formula (one line)
deadValue = deadUnits × COGS
daysToClear = stock / (units30d / 30)
In plain English: take your 30-day sales velocity, project it forward another 30 days to find a "safe cover window," and everything beyond that window is deadstock. The 30 here is a cover-days parameter you can dial — we default to 30 because that's what most healthy FBA sellers operate at.
Worked example: 5 SKUs
Below are five SKUs that look "fine" in Seller Central. Same revenue tier, same category. Watch what happens when we apply the formula:
| SKU | Stock | Units sold (30d) | Velocity/day | Dead units | Verdict |
|---|---|---|---|---|---|
| shoe-A | 420 | 30 | 1.0 | 390 | Critical (93% dead) |
| bag-B | 180 | 120 | 4.0 | 60 | Healthy |
| tee-C | 900 | 25 | 0.83 | 875 | Critical (97%) |
| cap-D | 60 | 90 | 3.0 | 0 | Healthy |
| belt-E | 1,200 | 8 | 0.27 | 1,192 | Critical (99%) |
Same seller, ~₹6L of revenue per month, looks profitable. But of 2,760 units in stock, 2,517 are deadstock. At ₹250 average COGS, that's ₹6.3 lakh of cash trapped in inventory that will not sell.
Why Seller Central won't show you this
Amazon's Inventory Health dashboard is closer than most reports, but it still doesn't compute deadstock per SKU. It tells you "Sell-Through Rate" — units sold ÷ inventory at period start — but that ratio collapses two SKUs that need very different actions into the same bucket.
A SKU at 0.1 sell-through with 50 units is a discount-and-move problem. A SKU at 0.1 sell-through with 2,000 units is a liquidation problem. The dashboard treats them the same.
The deadstock-units number tells you the gap in units. The deadstock-value number tells you the gap in rupees. That's the actionable signal.
Try it on your own SKUs
We built a free calculator that does the math above. Paste 5 to 10 SKUs, get a per-SKU verdict in 60 seconds. No signup, no card, no email.
→ Open Free Deadstock Calculator
What to do once you have the number
Three actions, in priority order:
- For SKUs >50% dead with positive velocity: discount 15–25% for 14 days. Re-check velocity. If it moves, repeat. If not, escalate.
- For SKUs >50% dead with near-zero velocity (< 0.3/day): bundle with a fast-mover, or remove inventory to off-Amazon channels.
- For SKUs aged >180 days: liquidate via Amazon Liquidations or B2B bulk. Holding past 271 days = storage surcharge ≥ recovery value.
Beyond deadstock: 12 more loss patterns
Deadstock is one of ~13 ways an Amazon seller's P&L silently bleeds. The other 12 — return loss, BE-ACOS drift, fee leak, buy-box theft, coupon-clipper attack, cash-conversion drag, etc. — compound on top of each other.
SLM (the product behind this calculator) scans all 13 in one upload and ranks your top 10 losing SKUs with one recommended action each. See how it works →
Related reading
- How to Spot Dead Stock in Amazon Seller Central (India)
- Break-Even ACOS Calculator for Amazon India Sellers
- Hidden Amazon Fees Indian Sellers Miss
Free · No signup · Works for FBA + FBM