Online Guitar Tuner
Professional chromatic tuner using your device's microphone. Supports guitar, bass, ukulele, and other string instruments with multiple tuning modes.
๐ต Chromatic Tuning โข ๐ธ Multiple Instruments โข ๐ง Various Tunings โข ๐ฑ Mobile Ready
Click to allow microphone access
Standard Guitar Tuning (E-A-D-G-B-E)
How to Use the Guitar Tuner
Follow these simple steps to tune your instrument perfectly
1. Allow Microphone
Click "Start Tuning" and allow microphone access when prompted by your browser.
2. Play a String
Pluck a string on your instrument. The tuner will detect the pitch and show the note.
3. Adjust Tuning
Turn the tuning peg until the indicator is centered and shows "Perfect Tune".
Professional Tuner Features
Everything you need for precise instrument tuning
Microphone Tuning
Uses your device's microphone for accurate pitch detection and tuning feedback.
Multiple Instruments
Supports guitar, bass, ukulele, and chromatic tuning for any instrument.
Various Tunings
Standard, Drop D, and other popular tuning modes for different playing styles.
Visual Feedback
Clear visual indicators show exact tuning with flat/sharp detection.
Mobile Friendly
Works perfectly on all devices - desktop, tablet, and smartphone.
100% Free
No registration, no downloads, no limits. Completely free forever.
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How to Tune Your Guitar Online
-
1
Start the Tuner: Click the "Start Tuning" button and allow microphone access when your browser prompts you. This online guitar tuner uses your device's built-in microphone, so no downloads or plugins are required.
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2
Select Your Instrument: Choose from standard guitar (E-A-D-G-B-E), Drop D tuning, bass guitar, ukulele, or chromatic mode. Each instrument preset shows the correct target notes for all strings.
-
3
Pluck a String: Play one string at a time near your device's microphone. The tuner will detect the pitch and display the current note, frequency in Hz, and whether you are flat, sharp, or in tune.
-
4
Adjust Until Perfect: Turn the tuning peg slowly while watching the indicator. When the meter centers and turns green, the string is in tune. Repeat for each string until all six are perfectly tuned.
Key Features
- -Real-Time Microphone Pitch Detection - Uses the Web Audio API to analyze your instrument's sound through your device microphone with high-accuracy frequency analysis.
- -Multiple Instrument Support - Tune a standard guitar, bass guitar, ukulele, or use chromatic mode for any instrument including violin, mandolin, or banjo.
- -Visual Tuning Meter - A clear flat-to-sharp indicator with color-coded feedback (red for out of tune, yellow for close, green for perfect) makes it easy to dial in precise tuning.
- -Drop D and Alternate Tunings - Switch between standard tuning and Drop D with a single click, ideal for rock, metal, and folk players who use alternate tunings frequently.
- -String-by-String Indicators - Six color-coded circles show the tuning status of each string at a glance, so you know exactly which strings still need adjustment.
- -Works on Any Device - This browser-based tuner runs on desktops, laptops, tablets, and smartphones with no app installation needed. It is completely free with no registration.
Frequently Asked Questions
Is this online guitar tuner accurate enough for real tuning?
Yes. This free online guitar tuner uses the Web Audio API's built-in FFT (Fast Fourier Transform) analysis to detect pitch with accuracy comparable to many clip-on tuners. It displays the detected frequency in Hz and measures cents deviation from the target note. For most practice sessions and casual playing, this browser-based tuner provides more than enough precision. Professional studio work may still prefer dedicated hardware tuners, but for everyday guitar tuning online, this tool works reliably.
Can I use this tuner for bass guitar, ukulele, or other instruments?
Yes. The tuner includes dedicated presets for standard guitar (E-A-D-G-B-E), Drop D guitar tuning, bass guitar (E-A-D-G), and ukulele (G-C-E-A). You can also select Chromatic mode to tune any instrument by pitch, including violin, mandolin, banjo, cello, and more. Simply switch the instrument dropdown to match what you are tuning, and the string indicators will update automatically.
Why is my microphone not working with the guitar tuner?
If the tuner cannot access your microphone, first check that your browser has permission to use it. On Chrome and Edge, click the lock icon in the address bar and ensure microphone access is set to "Allow." On Safari, go to Settings > Websites > Microphone. Make sure no other application is using the microphone simultaneously. If you are on a mobile device, try switching to desktop mode or refreshing the page after granting permission. This guitar tuner online no download tool requires only a modern browser and microphone access.