Forecast Amazon units
with confidenceA free Excel-based forecasting app built for brands and agencies who want a simple, math-driven anchor for Amazon unit planning.
Input window
0 mo.
unit sales + ad spend
Output charts
0
forecast + variance
Setup time
0 min
quick-start guide
Confidence
0%
interval included
Proof it works
Real results from real brands
See how Amazon brands and agencies use the forecasting model to make better inventory and budget decisions.
Locking In Q4 Inventory Commitments
A brand finalizing FBA purchase orders 90 days out plugged 21 months of historical unit sales and ad spend into the model. The monthly forecast gave them a grounded order quantity for each month of peak season. They entered October right-sized, avoided a stockout, and skipped the post-holiday storage fee spike from the prior year.
YoY units, zero stockouts
Catching an Inventory Outage Before It Happens
A consumables brand replenishing on prior year velocity had been leaving growth on the table. After running the unit forecast, they saw Q2 units projected to outpace the prior year by over 20%. They increased their inbound order before the lead time window closed.
reactive budget cut
Knowing When a Miss Is Actually a Miss
A brand's August units came in below their internal plan. Before cutting budget, they ran the unit forecast and found the result fell inside the model's expected range. The dip was seasonal, not structural. Instead of a reactive spend cut, the team held course and saw the September rebound the model had already projected.
plan built on data
Building a Tops-Down Annual Unit Plan
A brand building their annual operating plan needed a unit baseline before setting ad budgets. They used the model's regression output as the foundation for a tops-down forecast, mapping monthly unit projections to individual ASINs. The result was a budget allocation with a clear methodology their finance team could follow and pressure-test.
Here's what you get when you download it:
Ready-to-use Excel model
Plug in 12 to 25 months of unit sales and ad spend and see your unit forecast in minutes.
Outputs that matter
Forecast curves, coefficients, confidence intervals, and variance charts that highlight outliers.
Quick-start guide + sample data
So you don't get stuck. MixShift customers and demo sign-ups also get a free model walkthrough on one brand.
Use it to:
- Forecast future units with simple, defensible math
- Translate ad spend into expected unit lift
- Plan inventory buys with clearer visibility into future unit demand
- Explain unit beats and misses with data-backed outlier narratives
Want help getting started?
Book a short consult and we will walk through the model on your brand. Or commission a custom ASIN-level unit forecast build. The free version will get you moving today.
Why we share tools like this
Getting your unit forecast right is step one.
Figuring out why you beat or missed it is step two.
That is why we built Report Center 2.0 to make reporting smarter, answering the “what changed” question before you even ask it.
If you have found this Shift valuable, you will want to see what we are doing in beta.