Privacy Policy
We believe web tools should respect your confidentiality. At Deck Stair Calculator, our service is architected to perform mathematical engineering directly in your browser without tracking your activity or selling your data.
Privacy Summary (TL;DR)
All calculations (rise, run, stringer notches, lumber BOMs) happen entirely on your device. We do not transmit, log, or store your project measurements on our servers. We do not use third-party marketing tracking pixels or sell information to third-party data brokers.
1. Architecture of Client-Side Computing
Deck Stair Calculator (accessible at deckstaircalculator.com) is engineered as a static, multi-page web application (MPA). When you input total vertical rise, target tread depth, deck thickness, or stringer material:
- The trigonometric algorithms, 2026 IRC code validation checks, and SVG graphic rendering execute in JavaScript locally inside your web browser.
- Your dimensions, project names, and stringer cut blueprints are never transmitted to our web servers or any external cloud database.
2. Information We Do Not Collect
Unlike many online services, we do not require account registration, passwords, payment details, or personal profiling. We do not collect:
- Job site addresses or property owner information
- Custom tape measurements or architectural schematics
- Financial or credit card details (our tools are 100% free)
- Cross-site tracking identifiers for targeted advertising
3. Information We May Collect
We only receive personal information when you explicitly choose to provide it:
- Contact Inquiries: When you send us a message through our Contact form or email, we receive your name, email address, and message contents so we can respond to your request.
- Server Diagnostic Logs: Like virtually all web servers, standard access logs (such as IP address, browser user-agent, requested page, and timestamp) are collected automatically for basic security diagnostics, DDoS attack prevention, and server health. These logs are purged periodically.
4. Local Storage and Cookies
We do not use advertising or third-party profiling cookies. We use standard browser Local Storage solely for your user convenience:
localStorage.getItem("theme"): Stores your display theme choice ("light" or "dark") so your visual preference persists across visits without a flash of unstyled content.
You can clear local storage or cookies at any time via your browser settings without affecting the core mathematical calculations of the website.
5. Third-Party Service Providers
We utilize select infrastructure providers to securely serve our website:
- Google Fonts: We load the Geist and Geist Mono font families from Google Fonts CDN to ensure optimal typography and readability on job sites.
- Cloud Hosting & CDN: Our static pages are delivered globally via secure Content Delivery Networks with SSL/TLS encryption.
6. Your Legal Privacy Rights (GDPR & CCPA/CPRA)
Depending on your location (including the European Economic Area, United Kingdom, California, and other US states), you possess rights regarding your data:
- The right to know what personal information is processed
- The right to request deletion of any contact messages you have sent us
- The right to non-discrimination for exercising your privacy rights
Because we do not maintain accounts or store calculation datasets, we do not have personal data profiles associated with your web visits.
7. Contacting Us Regarding Privacy
If you have any questions or concerns regarding this Privacy Policy or our client-side data handling, please reach out to us:
Deck Stair Calculator - Privacy Officer
Email: privacy@deckstaircalculator.com