Online Tone Generator
Audio & Video ToolsPlay sine, square and saw tones at any Hz
FreePrivateInstant
440 Hz
Frequency (20 – 20000 Hz)
440 Hz
Wave
Volume
30%
Start at low volume — high or very low tones can be uncomfortable in headphones.
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History
All history →Online Tone Generator — at a glance
Play sine, square and saw tones at any Hz.
440 Hz · sine
Play
A4 note
How to use it — step by step
Just your input — nothing to install or sign up for.
1
Open or add your file
Add your file or start from the controls on the page.
2
Adjust settings
Change the options and see the preview update.
3
Run it
Press the main button to create your result.
4
Download
Save the result to your phone or computer.
Pro tips
Small things that make the result better.
✦440 Hz is the standard tuning note A4.
✦Keep volume low when testing headphones.
Quick facts
Freeno signup, no limit
Instantresult in a moment
Privatenothing is uploaded
Any devicephone, tablet or PC
Frequently Asked Questions
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.
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