Free sales calculator

Sales Forecast Calculator

This sales forecast calculator estimates how much pipeline may close in your chosen period. You set each probability and scenario change.

It measures weighted pipeline expected in a selected period, three user-controlled scenarios, and the base gap to target.

Revenue target for this period

Enter the revenue target for the forecast period.

Forecast period

Enter the number of days in the period you want to forecast.

Early-stage value expected in this period

Enter early-stage pipeline that could close in this period.

Middle-stage value expected in this period

Enter middle-stage pipeline that could close in this period.

Late-stage value expected in this period

Enter late-stage pipeline that could close in this period.

Customize calculation

Early-stage probability

Enter your probability for the early stage.

Middle-stage probability

Enter your probability for the middle stage.

Late-stage probability

Enter your probability for the late stage.

Conservative probability change

Optional. Enter a negative percentage-point change, such as -10 for ten points lower.

Optimistic probability change

Optional. Enter a positive percentage-point change, such as 10 for ten points higher.

Formula and assumptions

How this calculation works

Only pipeline that could close in the selected period belongs here. Scenario changes add or subtract percentage points from each entered stage probability, then stay within 0% and 100%.

Weighted forecast = sum of each stage value × its probability
Scenario forecast = sum of each stage value × its visitor-adjusted probability
Gap = greater of zero or target minus base weighted forecast

It does not prove what will close. It does not add hidden stage probabilities or industry rates.

Fictional aggregate example

This made-up forecast shows the math. It does not promise that revenue will close.

Made-up inputs

$100,000 target for a 90-day period
$80,000 at 20%, $60,000 at 50%, and $40,000 at 80%
Conservative change of -10 points and optimistic change of 10 points

Example result

$78,000 base forecast
$60,000 conservative and $96,000 optimistic
$22,000 base gap

Questions