Football Goal Impact on Win Probability
Estimate how a goal changes win probability, given score state and time remaining.
About this calculator
The Football Goal Impact on Win Probability on NumberCals is a free, mobile-friendly tool for anyone needing to estimate how a goal changes win probability, given score state and time remaining. Enter your values in the form below and the result is computed instantly — no sign-up, no installation, no waiting.
Formula used
P(win) = σ(a + b·goal_diff + c·time_remaining_fraction)
What you'll need
- Your Team's Goals (before) (e.g. 1)
- Opponent's Goals (e.g. 1)
- Current Minute (0–90+) (e.g. 70)
- Who Scored?
What you'll get
- Win Probability Before Goal (%)
- Win Probability After Goal (%)
- Win Probability Swing
- Summary
Frequently Asked Questions
How is this calculated? +
A simple logistic model with three inputs: current goal differential, minutes remaining, and which team scored. It's an approximation — real systems use historical match data, xG, and team strength.
Why does an early goal matter less than a late goal? +
More time remaining means more chances for the deficit to be overturned. A 1–0 lead at minute 80 is much safer than a 1–0 lead at minute 20.