Website enquiry break-even calculator
Estimate the additional enquiries needed to cover your monthly website cost.
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Your inputs stay in your browser. An estimate, not a quote.
How the calculation works
Expected monthly sales needed = website cost ÷ contribution per sale. Expected enquiries needed = sales needed ÷ (conversion percent / 100), rounded up. Contribution means revenue left after variable fulfilment costs, not total sale price. Enter a conversion rate above zero and at most 100, and positive contribution. Results are scenarios, not revenue forecasts; actual sales vary.
Before you decide
Run a low, expected and high-cost scenario. Confirm contract terms and what is excluded, then keep the assumptions alongside your result. A precise calculation is only as useful as the figures you put into it.
Read the planning guides →Use the number as a decision aid.
Define contribution correctly
Contribution is the amount left from a completed sale after the variable cost of delivering it. It is not total revenue and it is not accounting profit. If a $200 service requires $60 of directly attributable labour and materials, the planning contribution is $140 before fixed overhead.
A worked scenario
With a $50 monthly website cost and $100 contribution per completed sale, the long-run break-even requirement is 0.5 sales per month. At a ten-percent enquiry-to-sale rate, that equals five enquiries. Real months cannot contain half a sale, so use the result as an average across a longer period rather than a monthly promise.
Use a measured conversion rate
An assumed conversion rate is useful for planning but not evidence. Once the site receives enquiries, count valid enquiries and completed sales over a defined period. Exclude spam and internal tests. Recalculate when pricing, traffic sources or qualification rules change because those changes can alter the rate.
What break-even does not predict
The tool does not forecast demand, search traffic, customer lifetime value or payment timing. It also does not prove that extra website spending will create extra sales. Use low, expected and high scenarios, then compare them with actual results in a monthly review.