How the sales win rate calculator works
Sales win rate answers a specific question: of the opportunities that reached a final outcome, how many did the team win? The denominator contains won and lost deals. Open opportunities have no final outcome and are excluded. This distinction matters when a fast-growing pipeline contains many new deals that have not had time to close.
A closed-period report counts outcomes recorded during the period. A cohort report follows deals created or qualified together until they finish. Both can be useful, but they answer different questions. Choose one approach and preserve it when you compare teams, channels or quarters.
Win rate (%) = won deals ÷ (won deals + lost deals) × 100
Worked example
Start with the example inputs below. The calculator opens with these values; reset the example at any time to compare your own scenario.
| Measure | Value |
|---|---|
| Won deals | 24 |
| Lost deals | 56 |
| Measure | Value |
|---|---|
| Win rate | 30% |
| Loss rate | 70% |
| Closed deals | 80 |
Open deals are excluded. Compare the same period, segment and qualification rules.
How to use the result
Use the result to inspect qualification, competition and handover quality. Split the report by source or segment before changing the whole sales process. A low win rate among broad inbound enquiries may reflect different qualification rules from a high win rate among partner referrals.
Review loss reasons alongside the percentage. Price, timing and product fit call for different responses. Record a final outcome promptly so stale open deals do not disappear from the denominator indefinitely.
Assumptions and common mistakes
This tool calculates win rate by deal count, not revenue. Ten small wins and one large loss can produce a high count-based rate but a low value-based rate. Small samples also swing sharply: one additional win in a four-deal sample changes the result by 25 percentage points.