Purpose-first content
Each page is built around a specific musician task, such as tuning an instrument, identifying a chord, learning finger positions, or understanding a scale.
Our Standards
Editorial Policy
ChordTools publishes practical music utilities and supporting educational guides. This policy explains how we evaluate accuracy, usefulness, transparency, and corrections.
Last reviewed: July 31, 2026
Musical review
We check note names, tuning frequencies, chord formulas, scale intervals, fingerings, and transposition behavior against established music-theory conventions.
Tool testing
Interactive tools are tested for their core workflow on modern desktop and mobile browsers. Microphone tools are also checked for clear permission and privacy behavior.
Updates and corrections
We update pages when a tool changes, when clearer guidance is needed, or when a reader reports an error. Material updates are reflected in our sitemap dates.
How pages are created
We begin with the musical task a visitor needs to complete. The interactive experience comes first, followed by concise instructions, reference data, troubleshooting guidance, and links to the next relevant practice resource.
Reusable diagrams and theory calculations may share tested code, but each published page must provide a clear purpose and a working result. We do not intentionally publish placeholder pages or pages designed only to attract search traffic.
Accuracy and sources
Reference values use standard equal temperament with A4 = 440 Hz unless a page says otherwise. Chord and scale tools use conventional interval formulas, while instrument pages identify the tuning system or written-pitch convention they use.
Music has alternate spellings, fingerings, tunings, and teaching traditions. When more than one answer is common, we aim to label the convention instead of presenting one version as universal.
Corrections and feedback
If you find an incorrect note, fingering, frequency, broken interaction, or unclear explanation, please tell us which page and what you observed. We review actionable reports and prioritize corrections that affect a tool result.
Report an issueFunding and independence
ChordTools is free to use and may be supported by advertising. Advertising partners do not choose our musical answers, rankings, or editorial conclusions. Sponsored or affiliate relationships will be disclosed where they apply.