A/B Testing File Size (Annual) Calculator Examples
Worked scenarios showing how A/B test traffic, test schedules and asset sizes affect annual transfer and costs.
Use these examples to understand how different testing patterns affect additional file downloads, annual bandwidth and retained variation-asset storage. The figures are estimates and use decimal GB.
Lightweight monthly experiments
50,000 monthly visitors, 12 tests lasting 28 days, 50% test traffic, three 150 KB files per variation and a $0.09 per GB transfer rate.
Input Summary
Monthly visitors
50,000
Tests and duration
12 tests, 28 days each
Test traffic
50%
Added files
3 files at 150 KB
Bandwidth rate
$0.09 per GB
Calculation Breakdown
- 1Exposed sessions50,000 × 12 × (28 ÷ 365) × 12 × 0.50276,164.38
- 2File downloads276,164.38 × 3828,493.15
- 3Transfer828,493.15 × 150 ÷ 1,000,000124.27 GB
- 4Transfer cost124.27 × 0.09$11.18
Result Summary
Transfer cost
$11.18
A/B Testing File Size (Annual) Calculator
Estimated annual transfer is 124.27 GB, with about $11.18 in transfer charges.
Short campaign with large visual assets
200,000 monthly visitors, four tests lasting 14 days, 40% test traffic, four 500 KB files per variation and a $0.12 per GB transfer rate.
Input Summary
Monthly visitors
200,000
Tests and duration
4 tests, 14 days each
Test traffic
40%
Added files
4 files at 500 KB
Bandwidth rate
$0.12 per GB
Calculation Breakdown
- 1Exposed sessions200,000 × 12 × (14 ÷ 365) × 4 × 0.40147,287.67
- 2File downloads147,287.67 × 4589,150.68
- 3Transfer589,150.68 × 500 ÷ 1,000,000294.58 GB
- 4Transfer cost294.58 × 0.12$35.35
Result Summary
Transfer cost
$35.35
A/B Testing File Size (Annual) Calculator
Estimated annual transfer is 294.58 GB, with about $35.35 in transfer charges.
Always-on experimentation program
1,000,000 monthly visitors, 18 tests lasting 30 days, 75% test traffic, two 80 KB files per variation and a $0.08 per GB transfer rate.
Input Summary
Monthly visitors
1,000,000
Tests and duration
18 tests, 30 days each
Test traffic
75%
Added files
2 files at 80 KB
Bandwidth rate
$0.08 per GB
Calculation Breakdown
- 1Exposed sessions1,000,000 × 12 × (30 ÷ 365) × 18 × 0.7513,315,068.49
- 2File downloads13,315,068.49 × 226,630,136.99
- 3Transfer26,630,136.99 × 80 ÷ 1,000,0002,130.41 GB
- 4Transfer cost2,130.41 × 0.08$170.43
Result Summary
Transfer cost
$170.43
A/B Testing File Size (Annual) Calculator
Estimated annual transfer is 2,130.41 GB, with about $170.43 in transfer charges.
How to Read Your Results
Annual data transfer represents added variation-file traffic, not total page bandwidth.
Annual file downloads estimate extra asset requests generated by sessions exposed to tests.
Bandwidth cost is based only on the rate entered and may exclude other hosting fees.
Retained asset storage is separate from transfer and depends on the number of tests, variants, files and file sizes.
Compare scenarios by changing one assumption at a time, such as file size or traffic allocation.
Assumptions & Important Notes
- Each exposed session downloads each extra file once.
- The examples use decimal GB, where 1 GB equals 1,000,000 KB.
- Traffic is evenly distributed across the year.
- Normal page assets are excluded from the estimates.
Related Examples
Frequently Asked Questions
Can I use these examples for a multivariate test?
Yes. Enter the total share of visitors receiving extra files, the additional files per experience and the number of stored variants.
Why might actual transfer be lower than an example?
Caching, shared files, repeat visitors and incomplete asset loading can reduce real transfer.
What should I use for average file size?
Use the average compressed delivered size of added images, scripts, stylesheets or other variation-specific assets.
Do these examples include requests from the control?
No. They are intended to estimate extra files introduced by variations rather than normal control-page assets.
Ready to calculate your own result?
Use the live calculator with your own inputs, timing, and preferences.