Nic Patterson Studio

Free · Studio · 2026-10-12

Chord Chart Transposer

For Church pianist, teacher or accompanist. A singer needs a new key but the roots and slash basses must be changed consistently.

Local processing with no account or payment. No AI connection or automated sending. Save is optional and unencrypted on this browser/device; use non-sensitive references.

Your inputs

Use it well

Enter chord symbols with standard C–B roots, # or b accidentals and optional slash bass. Positive shifts move upward. Chord quality stays unchanged; review spelling and voicings for the new key. No audio or notation rendering is implied.

  1. Load the fictional example to understand the format.
  2. Replace it with your own non-sensitive inputs.
  3. Generate, review notes, then download the output.
  4. Save explicitly on your device or export a portable JSON backup.
Download offline application Download app, instructions & example ZIP

Offline download uses the same deterministic calculations and document generation. Browser storage may be limited for local files. Keep JSON backups. It does not use cloud AI, synchronize a team, or transmit your data.