How to use the conversion rate and AOV calculator
The page has three tools. Conversion & AOV measures a period that has already happened. Revenue goal works backwards from a target. What-if shows how improvements in traffic, conversion and order value combine.
- Enter sessions for the period from your analytics tool. A session is one visit; one person can make several.
- Enter orders and revenue from your store platform for exactly the same dates. Count orders, not items: an order with three products is one order.
- For a goal, enter the revenue you want and your current order value and conversion rate. Add today’s traffic to see how far each lever would have to move on its own.
- For the what-if, enter the percentage change you think each lever could make. These are relative changes: 10% on a 2.5% conversion rate means 2.75%, not 12.5%.
The formulas
Average order value (AOV) = Revenue ÷ Orders
Revenue per visitor (RPV) = Revenue ÷ Sessions = Conversion rate × AOV
Revenue = Sessions × Conversion rate × AOVUse one period for all three inputs. Sessions needed for a goal = Target revenue ÷ (AOV × Conversion rate).
The last line is the useful one. Revenue is a product of three numbers, so any of them can be the lever, and changes multiply rather than add.
A worked example
A store had 40,000 sessions last month, took 1,000 orders and made $85,000 in revenue.
The conversion rate is 2.50%: about one order every 40 sessions. The average order value is $85.00, and each session was worth $2.13 on average. Lifting conversion by a tenth of a percentage point, with the same traffic and order value, would add $3,400 a month.
To reach $120,000 at the same rates, the store needs 56,471 sessions, 41% more than today. With its current traffic it could instead raise conversion to 3.53% or the order value to $120.00.
Why conversion rate alone can mislead
Imagine a second store with the same traffic and the same revenue, but only 500 orders. Its conversion rate is 1.25%, half the first store’s, which looks like a problem. Yet its average order value is $170.00, and revenue per visitor is identical at $2.13.
Conversion rate and AOV often move in opposite directions. Discounts and cheap entry products lift conversion while pulling order value down; bundles and minimum spends for free shipping do the reverse. Revenue per visitor is the number that captures both, and it is also the ceiling on what you can pay for a visit: if ads cost more per click than a session is worth, they lose money before you even count product costs.
Small gains multiply
Because revenue is sessions × conversion × AOV, three modest improvements compound. In the what-if example, 10% more of each lifts revenue by 33.1%, not the 30.0% you would get by adding them, an extra $2,635 a month. The effect grows with the size of the changes:
| Improvement in each lever | Sum of separate gains | Combined gain |
|---|---|---|
| 5% | +15.0% | +15.8% |
| 10% | +30.0% | +33.1% |
| 25% | +75.0% | +95.3% |
The same arithmetic works against you when traffic and conversion fall together.
Common measurement mistakes
- Mixing periods or sources. Sessions and orders from different tools or dates produce a rate that is quietly wrong.
- Sessions versus users. A conversion rate per user is higher than one per session. The two cannot be compared.
- Ignoring refunds. If many orders are returned, gross AOV overstates what you keep.
- Averages that hide channels. Email, paid search and social traffic usually convert at very different rates. A blended rate can fall just because the channel mix changed.
What this calculator does not include
The results describe revenue, not profit. They ignore product costs, shipping, payment fees and the cost of getting the traffic. Use the e-commerce profit calculator for margins and the ROAS calculator to judge paid campaigns. The what-if tool also assumes each lever can move without affecting the others, which in practice is rarely true.