What it helps you decide
Blend sales trend and recent demand into a forward unit forecast.
Sales forecasting
Turn recent sales history into a practical demand forecast.
Use a linear trend and recent moving average to project the next periods, while making sales volatility visible before purchasing or scheduling production.
Start with the example
The values already filled in are a working example—not a recommendation.
- 1Choose the closest starting point.
- 2Replace the example with your real details.
- 3Read the live result and its important limits.
Your numbers
Historical unit sales
Use the filled example first. Then replace each field with a measured value or your best current estimate.
Step 1Answer one question at a time. Your example values stay available.
Important limit
A statistical trend does not know what changes next.
Adjust for promotions, lost sales, stockouts, holidays, weather, new accounts, churn, pricing, distribution changes, seasonality, and known one-time orders. Use separate histories for products with different demand patterns.
Want to keep working with these numbers?
Sales Forecast Spreadsheet
Use reusable product assumptions to forecast units and revenue, then compare actual sales and variance.
About this free sales & demand tool
How to use the Demand Forecast Calculator
Blend sales trend and recent demand into a forward unit forecast. The calculator runs privately in your browser and is designed to make the assumptions behind the answer visible.
What to have ready
Use a clean sales history, note promotions or stockouts, and separate unusual events from demand you reasonably expect to repeat.
Key inputs: Period entries; Periods to forecast; Periods in recent average; Trend forecast weight.
How to use the result
Use the forecast as a planning range, then adjust for inventory on hand, lead time, shelf life, capacity, and the cost of being over or under stock.
Ready for the connected version?
Turn the calculation into a repeatable workflow.
Batch Scale connects recipes, materials, costs, inventory, production, sales, and your storefront in one workspace.