Sales Forecast Calculator
Build a weighted sales forecast from your pipeline. See best case, worst case, and expected revenue based on deal amounts and close probabilities.
Probability by Stage
Forecasting Tips
- • Update probabilities weekly
- • Be honest — wishful thinking kills accuracy
- • Calibrate against historical actuals
- • Remove stale deals from pipeline
- • Track forecast accuracy over time
FAQ
What is a weighted sales forecast?+
A weighted forecast multiplies each deal's value by its probability of closing, then sums the results. A $100K deal at 50% probability contributes $50K to the weighted forecast.
What is best case vs. worst case?+
Best case sums all deal values regardless of probability. Worst case only includes deals with probability above 75%. The weighted forecast (expected) falls between these extremes.
How do I set deal probabilities?+
Use your historical win rates by stage. For example: Discovery = 10%, Demo = 25%, Proposal = 50%, Negotiation = 75%, Verbal Commit = 90%.
How accurate are weighted forecasts?+
They are more accurate than gut-feel estimates but depend on honest probability assignments. Most teams over-estimate probabilities. Calibrate by comparing forecasts to actual outcomes each quarter.
Should I include early-stage deals?+
Include them for a complete pipeline view, but assign realistic (low) probabilities. A deal in discovery at 10% barely impacts the weighted forecast but matters for pipeline health.
AI-Powered Forecasting with Dewx
Dewx uses historical data and AI to predict close probabilities, flag at-risk deals, and generate forecasts that actually match reality.
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