Sales forecast (trend)
Extend the trend of your past sales to estimate the coming months.
How it works
Linear regression (least squares): sales = a + b × month. The line is then extended to the next months. Use it as a ballpark, not a certainty.
Results are for guidance only and do not replace professional advice.
Worked example
With the default values:
- Past monthly sales (one per line)18200 · 19100 · 18700 · 20400 · 21300 · 21900 · 22800
- Months to forecast6
you get:
- Forecast in 6 months27,414
- Next month23,486
- Trend per month+786 (+3.9 %)
- Total forecast over the period152,700
Frequently asked questions
How does the “Sales forecast” tool work?
Linear regression (least squares): sales = a + b × month. The line is then extended to the next months. Use it as a ballpark, not a certainty.
What do I need to enter?
Just fill in: past monthly sales, months to forecast. The result updates as you type.
Can you give an example?
Past monthly sales (one per line): 18200 · 19100 · 18700 · 20400 · 21300 · 21900 · 22800; Months to forecast: 6 → Forecast in 6 months: 27,414; Next month: 23,486.
Is this calculator free, and is my data private?
Yes. HOD Calc is completely free with no sign-up. The calculation runs in your browser: nothing you type is sent or stored.