The Web Accessibility Impact Calculator is a tool designed to help businesses understand the potential revenue and traffic they could gain by making their websites accessible. Using country-specific disability statistics and real-world conversion improvement data, it provides insights into the business case for web accessibility.
You can read more about the business case for web accessibility and why you should always make it part of your business strategy.
Many businesses view accessibility as merely a compliance requirement or an additional cost. However, the disability market represents:
- Over £274 billion in spending power in the UK
- $490 billion in disposable income in the US
- €150 billion in the EU
- A$54 billion in Australia
- C$55 billion in Canada
By not having an accessible website, businesses are potentially excluding up to 20% of their market, depending on their location.
The calculator takes three key metrics:
- Monthly Website Visitors
- Average Order Value
- Current Conversion Rate
The tool then:
- Applies country-specific disability statistics to estimate potential disabled visitors
- Calculates potential revenue based on:
- Current conversion rates
- Appoximate Industry-standard accessibility improvement factor (15%)
- Average order values
The calculator includes disability statistics for:
- United Kingdom 🇬🇧
- United States 🇺🇸
- European Union 🇪🇺
- Australia 🇦🇺
- Canada 🇨🇦
Potential Monthly Traffic = Monthly Visitors × Country-Specific Disability Percentage Potential Yearly Traffic = Monthly Traffic × 12
Current Revenue = Monthly Visitors × Current Conversion Rate × Average Order Value Potential Revenue = Monthly Visitors × (Current Conversion Rate × 1.15) × Average Order Value Additional Revenue = Potential Revenue - Current Revenue
For each country, we consider people with the following:
- Blindness and low vision
- Deaf and Hard of Hearing
- Mobility
- Cognitive
This calculator is a tool to demonstrate potential impact and should be used as part of a broader business case for web accessibility. Real-world results will vary based on multiple factors.
- UK: Office for National Statistics
- US: CDC and US Census Bureau
- EU: Eurostat
- Australia: Australian Bureau of Statistics
- Canada: Statistics Canada
- Results are estimates based on available data and research
- Actual results may vary based on:
- Implementation quality
- Industry sector
- Current accessibility level
- User demographics
- Geographic location
The 15% improvement factor is based on:
- Industry case studies
- Academic research
- Real-world implementation results
- Conservative estimates to ensure realistic projections
index.html: Main calculator structurestyles.css: Styling and responsive designcalculator.js: Calculation logic and country data
- WCAG 2.2 AA compliant
- Keyboard accessible
- Screen reader friendly
- High contrast ratios
- Clear focus indicators
- Semantic HTML
- ARIA labels where needed
Contributions are welcome! Please read our contributing guidelines and submit pull requests to our GitHub repository. License
Feel free to use, modify, and distribute as needed.
For questions, issues, or feature requests, please:
- Open an issue on GitHub
- Contact us
- Visit our website