Build a simple 12-month forecast in Google Sheets
Task · Forecasting
Time saved · 1-2 hrs per forecast (estimate, not measured)
Steps
- Open the sheet in Google Sheets
- Open the Gemini side panel
- Enter the prompt
- Verify results against a pivot table or manual check
Prompt / template
Using the monthly revenue history in columns A-B, create a 12-month forecast with a 3-month moving average and a growth-rate scenario, in a new table.
Source · https://support.google.com/docs/answer/14218565
Last checked · 2026-10-16