B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
20%
20% -- ab test win rate for CRO / A/B testing programmes (2025)
VWO data indicates that most CRO and A/B testing programmes achieve a win rate in the 20% to 30% range.
- Cited secondhand from VWO benchmark data
- Presented as a typical range (20-30%) for A/B testing programmes
Attribution:
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Lighthouse Research Team
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Source verified
Evidence graded
Value
20%
Unit
Percentage
Data Vintage
2025
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
VWO
Primary
Tier C
https://www.weblics.agency/blog/cro-roi-calculation-full-content-package ↗
Source Article
CRO ROI Calculation: The Formula Your CFO Wants
How to Measure CRO ROI Without Lying to Yourself
- The CRO ROI formula, in one line
- What inputs you need before you calculate anything
- Why most CRO revenue calculators lie to you
- The realistic win rate nobody wants to quote
- How to calculate uplift from conversion optimisation
- CRO payback p…
Original Research
VWO
· Original study ↗
Methodology
VWO data shows most programmes land in 20-30% win rate range; midpoint used. Cited secondhand.
Methodology documented
Segmentation
Industrymarketing
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Plain Text
CRO / A/B testing programmes: 20% ab test win rate. Source: VWO (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ab-test-win-rate-vwo
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<blockquote cite="https://lighthousedata.io/data/ab-test-win-rate-vwo" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>20%</strong> -- ab test win rate for CRO / A/B testing programmes<br><small>Source: VWO (2025) · <a href="https://lighthousedata.io/data/ab-test-win-rate-vwo" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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