Chord-Calculator.com is committed to making its tools and educational content accessible to the widest possible range of users, including people with disabilities. This statement explains our current accessibility status, what we have implemented, any known limitations, and how to contact us if you encounter a barrier.
Our Commitment
We believe that anyone interested in music theory, chord construction, interval relationships, or harmonic analysis deserves access to tools and information that support that interest — regardless of disability, device, or technical setup.
Chord-Calculator.com aims to conform to the Web Content Accessibility Guidelines (WCAG) 2.1 at Level AA — the internationally recognised standard for web accessibility published by the World Wide Web Consortium (W3C).
Accessibility is an ongoing commitment. Identified barriers are addressed through our own review or user feedback.
Current Accessibility Status
Chord-Calculator.com is substantially conformant with WCAG 2.1 Level AA. Substantially conformant means the tools and content meet the standard in all major areas, with minor known gaps disclosed below.
This site has the most accessible core tool set of any music tool site, because all tools operate through typed or selected text input and return results as structured text. No audio input or output is involved. No microphone access is required. No hearing is required to use any tool on this site.
What We Have Implemented
Keyboard navigation. Core site navigation — menus, links, and page structure — is fully accessible via keyboard. Tab key to navigate, Enter to activate links and buttons.
Tool input accessibility. All tool input fields — note name selectors, chord quality selectors, and text inputs — have associated labels, are keyboard accessible, and work with screen readers. You can operate the Chord Calculator, Chord Finder, and Interval Calculator entirely without a mouse.
Result accessibility. All tool results are returned as structured text — note names, interval names, chord quality descriptions, and inversion lists. These results are fully accessible to screen readers and do not require vision or hearing to interpret.
Text readability. Body text at minimum 16px with sufficient line spacing. Heading levels (H1, H2, H3) follow correct hierarchical order throughout, allowing screen readers to navigate content structure logically.
Colour contrast. Text and background colour combinations meet or exceed the WCAG 2.1 Level AA minimum contrast ratios — 4.5:1 for normal text, 3:1 for large text.
Descriptive link text. Links describe their destination — no generic “click here” or “read more.”
Alt text on images. Meaningful images include descriptive alt text. Decorative images use empty alt attributes.
Responsive design. The site adapts to all screen sizes without horizontal scrolling at 200% zoom.
No auto-playing media. No audio plays automatically without user action.
Page titles. Every page has a unique, descriptive title tag.
Skip navigation link. A “Skip to content” link is available at the top of every page.
The Tools Are Fully Accessible Without Audio or Voice
Unlike audio-based music tools, the tools on Chord-Calculator.com require no audio input, no microphone, and no hearing. This means they are fully usable by:
- Users who are deaf or hard of hearing
- Users who cannot produce vocal sound
- Users who do not have a microphone
- Users in any acoustic environment
The Chord Calculator, Chord Finder, and Interval Calculator all operate from typed or selected note and chord names and return text results. Screen reader users receive the same complete chord information — note names, intervals, inversions — as sighted users.
Known Limitations
Visual Chord Diagrams
If the site includes visual chord diagram representations — such as piano keyboard diagrams or guitar chord fingering charts — these are currently visual-only representations. Text equivalents listing the notes in each chord are present alongside any diagrams, providing equivalent information for screen reader users. We are reviewing whether additional ARIA descriptions would improve the experience for screen reader users who benefit from a more detailed description of the visual layout.
Complex Interval and Chord Tables
The How It Works page and educational articles include tables with multiple rows and columns presenting interval formulas and chord structures. Tables include proper header markup and are navigable by screen readers using standard table navigation commands (Tab, arrow keys in some screen readers). For very large tables, navigation may require additional keystrokes. We are reviewing the table structure to ensure the most efficient screen reader navigation experience.
Third-Party Content
If advertising or third-party content is added to this site in future, the accessibility of those elements will depend in part on third-party providers and will be outside our direct control. Any such addition will be reviewed for accessibility impact before implementation.
Educational Content Accessibility
All educational articles on Chord-Calculator.com — covering chord construction, interval theory, harmonic function, scale theory, and music theory fundamentals — are written as text-based content fully accessible to screen readers and keyboard navigation. No audio is required to access any educational content on this site.
Assistive Technology Compatibility
Tested with:
- Screen readers: NVDA with Chrome (Windows), VoiceOver with Safari (macOS and iOS)
- Keyboard-only navigation: Chrome and Firefox on Windows
- Browser zoom: Content tested at 200% zoom without loss of functionality
- High contrast mode: Core content remains readable in Windows High Contrast mode
We recommend Chrome or Firefox with your preferred assistive technology for the most consistent experience.
Feedback and Contact
If you experience a barrier on any page or tool — a field that cannot be reached by keyboard, a result not accessible to your screen reader, a table that is difficult to navigate, or any other accessibility issue — please contact us.
Contact: chord-calculator.com/contact
Include the page or tool, the assistive technology and browser, and what you expected versus what happened. We respond to all accessibility feedback personally within 7 business days.
Formal Complaints
If you are not satisfied with our response, you may contact the relevant national enforcement body in your country.
Review Schedule
This statement is reviewed and updated at least once per year, or whenever significant changes are made to the site’s tools or structure.
Related Pages
- How It Works — how each tool calculates results
- Chord Calculator FAQ — common questions
- Contact — report an accessibility barrier
This Accessibility Statement is written and maintained by Liam, founder of Chord-Calculator.com. Last updated: June 2026.