Store Traffic & Conversion Calculator
Calculate your store conversion rate, revenue per visitor, and identify missed revenue opportunities.
About this calculator
This calculator turns raw door-counter traffic into the metrics retail managers actually track: what share of visitors buy, how much each visitor is worth on average, and how much revenue is sitting on the table from visitors who walked out empty-handed. Conversion Rate divides Daily Transactions by Daily Foot Traffic -- Average Basket Size plays no role in it at all, since conversion measures whether people buy, not how much they spend once they do. Revenue Per Visitor instead folds all three inputs together (Daily Transactions times Average Basket Size, divided by Daily Foot Traffic), so it measures something distinct: how much sales revenue the store generates per person who simply walks through the door, converting or not.
Daily Missed Opportunity assumes a fixed 20% of non-converting visitors could realistically be won over with better staffing, merchandising, or service, and multiplies that estimated recoverable visitor count by Average Basket Size -- the 20% figure is this calculator's own illustrative assumption, not a measured industry constant, since actual convertible share varies enormously by store format and season. Daily Transactions can never exceed Daily Foot Traffic in this model (a transaction requires a visitor), so Conversion Rate is capped at 100% even if you enter more transactions than foot traffic. Neither figure accounts for repeat visits by the same shopper within a day, which foot-traffic counters typically cannot distinguish from separate visitors.
Inputs
Results
Conversion Rate
20%
Revenue per Visitor
$9.00
How to Use This Calculator
- Enter daily foot traffic from your door counter.
- Set the number of daily transactions completed.
- Enter your average basket size ($) (transaction value).
- Review conversion rate (%), revenue per visitor, and daily revenue.
- Calculate missed opportunity (visitors who did not convert) to quantify the value of improving conversion.
How the result changes with Daily Foot Traffic
| Daily Foot Traffic | Conversion Rate | Revenue per Visitor |
|---|---|---|
| 250 | 40% | $18.00 |
| 375 | 26.7% | $12.00 |
| 750 | 13.3% | $6.00 |
| 1,250 | 8% | $3.60 |
What each input means
- Daily Foot Traffic
- Average number of people entering the store per day
- Daily Transactions
- Average number of completed purchases per day
- Average Basket Size
- Average dollar amount per transaction
What each result means
- Daily Missed Opportunity
- Estimated lost revenue assuming 20% of non-buyers could convert
How this is calculated
Worked example, using the default values
- Identify Input Parameters3 parametersDaily Foot Traffic = 500, Daily Transactions = 100, Average Basket Size = 45 = 3 input(s) provided
- Calculate Conversion RateConversion Rate20 = 20%
- Calculate Revenue per VisitorRevenue per Visitor9 = $9
- Calculate Daily Missed OpportunityDaily Missed Opportunity3600 = $3,600
- Calculate Daily RevenueDaily Revenue4500 = $4,500
Engine last updated . Checked against 3 independently-derived tests — how we verify calculators. Built by Paul Gunder, a software engineer, not a licensed financial, medical, or legal professional.
Frequently Asked Questions
Why doesn't Average Basket Size affect Conversion Rate?
Conversion Rate is purely Daily Transactions divided by Daily Foot Traffic -- it measures what share of visitors made any purchase at all, regardless of size. Average Basket Size only enters Revenue Per Visitor, Daily Revenue, and Monthly Revenue, which measure how much money changed hands, a separate question from how many people bought something.
What happens if I enter more Daily Transactions than Daily Foot Traffic?
The calculator caps Daily Transactions at your entered Daily Foot Traffic, since a transaction requires a visitor to have walked in. This keeps Conversion Rate from exceeding 100% and keeps Daily Missed Opportunity from going negative -- both of which would be nonsensical for a store where transactions genuinely cannot outnumber visitors.
Where does the 20% figure in Daily Missed Opportunity come from?
It's this calculator's own simplified assumption -- that roughly one in five non-converting visitors could realistically have been won over with changes like better staffing coverage, clearer merchandising, or faster checkout. It is not a measured statistic and the real convertible share varies widely by store type, so treat Daily Missed Opportunity as an illustrative estimate of upside, not a precise forecast.
Why doesn't Daily Foot Traffic usually change Daily Revenue?
Daily Revenue is calculated as Daily Transactions times Average Basket Size -- once you know how many purchases happened and their average size, the total doesn't depend on how many additional non-buying visitors also walked through the door. The one exception is if you enter more Daily Transactions than Daily Foot Traffic, since transactions are capped at foot traffic (a sale requires a visitor); short of that edge case, Daily Foot Traffic instead matters for Conversion Rate and Daily Missed Opportunity, which describe the visitors who did not convert.
How is Revenue Per Visitor different from Average Basket Size?
Average Basket Size is what you enter -- the average dollar amount per completed transaction. Revenue Per Visitor spreads that same sales revenue across every person who walked in, buyers and non-buyers alike, so it is always lower than Average Basket Size whenever Conversion Rate is below 100%. It's a useful number for comparing overall store productivity per unit of foot traffic, independent of conversion rate.
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