Average Deal Size Calculator
Average Deal Size: Average deal size = total won value ÷ number of won deals. Methodology stated, your own inputs only.
In short
Average Deal Size: Average deal size = total won value ÷ number of won deals. Methodology stated, your own inputs only.
Formula: Average deal size = total won value ÷ number of won deals.
What this calculator does
Average Deal Size: Average deal size = total won value ÷ number of won deals. Methodology stated, your own inputs only. Worked example, questions and limitations included.
Use it to turn Currency (symbol only, never converted), Total value of won deals, Number of won deals into a checked result you can compare, copy, or rerun with different assumptions.
The page shows the formula, a numeric worked example, and the assumptions that affect this sales calculation.
Inputs and what they mean
- Currency (symbol only, never converted)
- — choice value.
- Total value of won deals
- — number value.
- Number of won deals
- — number value.
How to use it
- Enter each value in the unit shown next to the box (use the unit converter first if your numbers are in other units).
- Check the breakdown to see every intermediate step.
- Read the limitations before relying on the result.
Formula
Methodology: arithmetic mean of closed-won deals in the period.
A few very large deals pull the mean up; check the median in your CRM if sizes vary a lot.
Use contract value consistently (first-year or total).
Average deal size = total won value ÷ number of won deals.
Inputs used: Currency (symbol only, never converted), Total value of won deals, Number of won deals.
Worked example
A month
- 360,000 ÷ 18 = $20,000.
Reading the result
The headline figure is the main answer. Any breakdown underneath shows the parts that make it up, so you can check the working and see what changes when you adjust an input.
Limitations and assumptions
- Mean only.
- Sensitive to outliers.
- Results are educational estimates built only from the figures you enter. They are not personalised investment, tax, legal or accounting advice. Rates, growth and discount assumptions are always yours to choose.
- The result depends on the values you enter for this average deal size calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.
Reference: OpenStax
Last reviewed:
Common questions
Include lost deals?
No — only won deals. Check the formula, example, and limitations on this page before using the result for a real sales decision.
First-year or total contract value?
Either, but don't mix them. ACV uses first-year or annualised value.
Is there a good benchmark?
Benchmarks vary widely by market, deal size and sales motion. This page shows only your own figure and does not judge it.
How do I use the Average Deal Size Calculator?
Enter the required values for Currency (symbol only, never converted), Total value of won deals, Number of won deals. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.
What formula does the Average Deal Size Calculator use?
Average deal size = total won value ÷ number of won deals. The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone.
Can the Average Deal Size Calculator be used for exact decisions?
Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.
Sources
Method based on OpenStax.
Cite this page
Free Calculator. (2026, October 15). Average Deal Size Calculator. https://freecalculator.tech/tools/average-deal-size-calculator
"Average Deal Size Calculator." Free Calculator, 15 Oct. 2026, https://freecalculator.tech/tools/average-deal-size-calculator.
Average Deal Size Calculator — Free Calculator, https://freecalculator.tech/tools/average-deal-size-calculator
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