A/B Testing Hosting Cost Calculator Examples
Worked examples show how traffic allocation, page size and included bandwidth can affect an A/B test's estimated monthly hosting cost.
These examples use the calculator's bandwidth-based approach: estimate experiment participants and page loads, convert transfer from MB to GB, then add any bandwidth overage to the fixed monthly fee. They are planning illustrations rather than provider invoices.
Small landing-page experiment within the allowance
A product team tests a landing-page headline for 20% of a 20,000-visitor monthly audience.
Input Summary
Monthly site visitors
20,000
Test traffic
20%
Pageviews per test visitor
2
Average tested page size
1 MB
Included bandwidth
25 GB
Overage rate
$0.10 per GB
Fixed monthly fee
$29.00
Calculation Breakdown
- 1Test visitors20,000 × 20%4,000 visitors
- 2Tested pageviews4,000 × 28,000 pageviews
- 3Bandwidth used(8,000 × 1 MB) / 1,0247.81 GB
- 4Overage costmax(0, 7.81 − 25) × $0.10$0.00
- 5Monthly cost$29.00 + $0.00$29.00
Result Summary
Monthly cost
$29.00
A/B Testing Hosting Cost Calculator
Estimated monthly hosting cost is $29.00, with 7.81 GB of test bandwidth and no bandwidth overage.
Medium-traffic checkout experiment with bandwidth overage
An ecommerce team exposes 50% of 100,000 monthly visitors to a checkout layout test.
Input Summary
Monthly site visitors
100,000
Test traffic
50%
Pageviews per test visitor
3
Average tested page size
2 MB
Included bandwidth
100 GB
Overage rate
$0.09 per GB
Fixed monthly fee
$49.00
Calculation Breakdown
- 1Test visitors100,000 × 50%50,000 visitors
- 2Tested pageviews50,000 × 3150,000 pageviews
- 3Bandwidth used(150,000 × 2 MB) / 1,024292.97 GB
- 4Bandwidth overage292.97 − 100192.97 GB
- 5Monthly cost$49.00 + (192.97 × $0.09)$66.37
Result Summary
Monthly cost
$66.37
A/B Testing Hosting Cost Calculator
Estimated monthly hosting cost is $66.37, including about $17.37 in bandwidth overage.
High-traffic, image-heavy experiment
A media site runs a 75% allocation test on a visual article template for 500,000 monthly visitors.
Input Summary
Monthly site visitors
500,000
Test traffic
75%
Pageviews per test visitor
4
Average tested page size
3.5 MB
Included bandwidth
1,000 GB
Overage rate
$0.08 per GB
Fixed monthly fee
$149.00
Calculation Breakdown
- 1Test visitors500,000 × 75%375,000 visitors
- 2Tested pageviews375,000 × 41,500,000 pageviews
- 3Bandwidth used(1,500,000 × 3.5 MB) / 1,0245,126.95 GB
- 4Bandwidth overage5,126.95 − 1,0004,126.95 GB
- 5Monthly cost$149.00 + (4,126.95 × $0.08)$479.16
Result Summary
Monthly cost
$479.16
A/B Testing Hosting Cost Calculator
Estimated monthly hosting cost is $479.16. Estimated cost per test visitor is about $0.0013.
How to Read Your Results
Test bandwidth is the estimated data transfer generated by experiment participants, not necessarily all site traffic.
Bandwidth above allowance is zero whenever estimated test use is less than or equal to the included amount.
The monthly hosting cost combines only the entered fixed fee and calculated bandwidth overage.
Cost per test visitor spreads the total estimated monthly cost over participants; it is helpful for comparing test scale.
Compare the estimated bandwidth result with usage reports after launch to refine future inputs.
Assumptions & Important Notes
- Each example assumes one assigned experience per participant rather than every participant loading both versions.
- Average page size is treated as transferred data for each tested pageview.
- The stated allowance is available for the test and is not already consumed by other workloads.
- The examples use 1,024 MB per GB and do not apply taxes or separate service charges.
Related Examples
Frequently Asked Questions
Can I use these examples for a multivariate test?
Yes, as a bandwidth estimate if you enter the total traffic included and the average transferred page size. More variants may increase page size or operational complexity, which should be reflected in the inputs.
Why can two tests with the same visitor count cost different amounts?
They may have different traffic allocation, pageviews per participant, transferred page size, included bandwidth, fixed fees or overage rates.
What happens if included bandwidth is zero?
All estimated test bandwidth is treated as overage, so the variable cost equals estimated GB multiplied by the entered overage rate.
Should I enter the page size of the control or variation?
Use a representative average transferred size across the experiences participants receive. If one variation is substantially heavier, a weighted estimate can be more useful.
Ready to calculate your own result?
Use the live calculator with your own inputs, timing, and preferences.