DollarWise

Online Guitar Tuner — E A D G B E with Live Needle Gauge

October 16, 2026 · 2 min read · By the DollarWise team

No tuner app, no problem. Allow microphone access and play a string — this tuner listens through your mic, detects the pitch with autocorrelation, and shows exactly how many cents sharp or flat you are on a live needle gauge. Your audio is analyzed in real time and never recorded, stored, or uploaded.

Online Guitar Tuner

Play a string — the needle shows sharp or flat in real time. E A D G B E.

100% Free Forever No Sign-up No Credit Card Private — files never leave your browser Unlimited Use

1 Enable your microphone

Your browser will ask for microphone permission. Audio is analyzed live and never recorded, stored, or uploaded.

2 Pick a string (or auto-detect)

3 Tune to the needle

-50¢-25¢0+25¢+50¢

🎸 Live pitch

Press "Enable Microphone", then play a string.
🎉 Free forever. No sign-up. No credit card. No limits.

Tune as often as you like — nothing is ever recorded or uploaded.

How it works

  • Step 1 — Tap “Enable Microphone” and allow access when your browser asks.
  • Step 2 — Leave auto-detect on, or lock to a specific string (E A D G B E).
  • Step 3 — Play a string clearly. The needle swings sharp (right) or flat (left); turn green at ±5 cents and the readout confirms you’re in tune.

Everyday uses

  • Beginners — tune up before every practice session.
  • Gigging players — quick tune check with no app install.
  • Teachers — a tuner that works on any classroom computer.
  • Travelers — tune on any device with a browser and a mic.

Rule of thumb: pluck the string with your thumb near the 12th fret for the cleanest reading, and tune up to the note (tightening) rather than down — it holds tuning better.

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