Cybersecurity TAM, SAM & SOM calculator.

Build your 12-month scenario.

Enter your own assumptions below. The starting values are fictional examples, not market benchmarks or One Cyber results. Count unique potential customer organizations, not individual contacts.

How the calculation works

1. TAM: broad market accounts × annual contract value.
2. Serviceable accounts: broad market accounts × serviceable share.
3. SAM: serviceable accounts × annual contract value.
4. Potential qualified opportunities: serviceable accounts × qualified opportunity share.
5. Sales capacity: active sellers × annual opportunities per seller.
6. Capacity-capped opportunities: the lower of potential opportunities and sales capacity.
7. Expected wins: capacity-capped opportunities × opportunity-to-win rate.
8. SOM scenario: expected wins × annual contract value.

What the result means

This SOM scenario estimates the annualized contract value of new customers won during a 12-month acquisition period. It is not total company revenue, recognized revenue during that year, or a prediction. It excludes existing customers, churn, expansion, sales-cycle timing, ramp time, and price differences between segments.

Expected account counts can be fractional because the model multiplies probabilities. Results display up to one decimal place for counts and whole dollars for revenue. Calculations use unrounded intermediate values.

Make your assumptions stronger.

Replace the example account count with a deduplicated market segment. Estimate contract value from comparable customers where possible. Use an opportunity-to-win rate with the same qualification definition as your sales team. Run a conservative scenario to see how weaker reach, lower prices, or reduced capacity changes the result.

Read the bottom-up market-sizing guide for a worked example and assumption checklist. Explore the One Cyber buyer database when you are ready to map the people within your target accounts.