◄ SALESDAMUS

Retail sales forecast calculator

Preloaded with three years of a seasonal retail revenue curve — swap it for your own store's numbers and get a forecast that actually accounts for your yearly cycle.

Retail rarely moves in a straight line — holiday quarters, back-to-school, and category-specific peaks repeat every year. With two or more years of monthly history, Salesdamus backtests a seasonal model against a plain trend and keeps whichever one actually predicted your recent months better, instead of assuming this December will look like an average month.

Shorter history still works — you'll just get a trend-only forecast until you have enough data for the seasonal pattern to backtest reliably.

> DATA FOR ANALYSIS

Paste from Excel (Ctrl+V), import a CSV, or load an example

TRY EXAMPLE:
MONTH ?SALES ?EXPENSES ?CONVERSION % ?
Drop a CSV file anywhere on the table

> WHAT TO FORECAST

> CALCULATION METHOD

> FORECAST HORIZON

How many future periods to project. Confidence intervals widen further out.

3 periods

Press to launch forecast

> REVENUE GOAL

Have a target? See what growth rate it actually needs — checked against your real history.

FAQ

Does it handle multiple store locations?

Forecast total revenue across locations, or run it separately per store — paste whichever series you want projected. It doesn't combine multiple series into one model automatically.

How many years of history for reliable seasonality?

Two full years is the practical minimum; three or more makes the backtest — and the model choice it produces — noticeably more stable.

→ How the forecasting models work