A/B Test Revenue Impact Calculator
Estimate how much additional revenue a winning A/B test could generate for your business on a monthly and annual basis.
Projected Revenue Impact
Current Monthly Revenue
$262,500
New Monthly Revenue
$294,000
Monthly Revenue Increase
+$31,500
Annual Revenue Increase
+$378,000
Because this projection assumes traffic, lift, and order value stay stable, treat it as an upside estimate. If you are weighing outside help, compare common engagement costs before deciding whether the potential return clears the fee.
You just ran the numbers. Where will the result live?
A calculator answers one question and forgets it. GrowthLayer keeps each test your team saves — the hypothesis, the numbers, and the decision — so future planning can start from a reviewable record.
- Structured history of saved experiments
- Import results from CSV in one step
- Program summaries across saved tests
- Free to start — no card required
Methodology
This calculator estimates the revenue impact of implementing an A/B test winner.
The formulas are:
Current monthly conversions = monthly traffic x baseline conversion rate
Current monthly revenue = current monthly conversions x average order value
New conversion rate = baseline conversion rate x (1 + lift% / 100)
New monthly conversions = monthly traffic x new conversion rate
New monthly revenue = new monthly conversions x average order value
Incremental monthly revenue = new monthly revenue - current monthly revenue
Incremental annual revenue = incremental monthly revenue x 12
This is a straightforward projection model. It assumes:
- Traffic volume remains constant month-over-month
- The observed lift holds steady over time (no novelty effects or regression)
- Average order value remains stable
- The conversion rate improvement applies to all traffic equally
For the most accurate projections, we recommend using a conservative lift estimate (50-80% of observed lift) and updating projections quarterly with actual performance data.
Frequently Asked Questions
How is revenue impact calculated?▾
Revenue impact is calculated by comparing your current conversion rate with the expected new conversion rate after applying the test lift. Current monthly revenue = monthly traffic x baseline conversion rate x average order value. The incremental revenue is the difference between the new projected revenue and the current revenue.
Should I use observed lift or a conservative estimate?▾
It is best practice to use a conservative estimate. Observed lifts from A/B tests tend to be inflated due to regression to the mean and winner's curse. A common approach is to use 50-80% of the observed lift for revenue projections, especially for smaller sample sizes.
Does this account for seasonal variation?▾
This calculator assumes a constant monthly traffic and conversion rate. In reality, most businesses see seasonal fluctuations. For more accurate projections, calculate revenue impact for each month or quarter using period-specific traffic and conversion data.
What is average order value (AOV)?▾
Average order value is the mean revenue per transaction. Calculate it by dividing total revenue by the number of orders in a given period. If you sell subscriptions, you can use average revenue per user (ARPU) or customer lifetime value (LTV) instead for a more complete picture.
Can I use this for non-ecommerce sites?▾
Yes. Replace 'average order value' with the monetary value of a conversion for your business. For SaaS, this might be average contract value. For lead generation, it could be average deal value multiplied by close rate. The formula works the same way regardless of business model.
Updated for 2026. Built by GrowthLayer — built for evidence-aware experimentation teams.