Cost Overrun Risk Calculator
Expected value of cost overrun risk.
Work It Out And Get Clear Answers
Expected value of cost overrun risk.
Cost Overrun Risk Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
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Calculate
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Review
Read the breakdown and the explanation.
Adjust
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Cost Overrun Risk Quick Guide
Typical values for reference.
| Budget (£) | Chance of overrun (%) | Typical overrun size (%) | Expected overrun |
|---|---|---|---|
| 100,000 | 30 | 20 | £6,000.00 |
| 50,000 | 30 | 20 | £3,000.00 |
| 200,000 | 30 | 20 | £12,000.00 |
| 100,000 | 15 | 20 | £3,000.00 |
| 100,000 | 60 | 20 | £12,000.00 |
| Rule of thumb: check your inputs, use the result as a guide and round sensibly. | |||
Cost Overrun Risk FAQ
Answers to common questions about this calculator.
Expected overrun = budget × probability × overrun size.
It uses the default inputs shown and the formula described above. Change any value and press Calculate to see how the result moves.
It is an estimate based on the inputs you enter. Check real quotes, labels, product data or official guidance for important decisions.
Yes. Replace each input with your own figures and press Calculate to update the result.