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Is Free Hz Generator completely free?
Yes — 100% free, forever. No subscriptions, no premium tiers, no ads.
Do I need to create an account?
No. The site works instantly in any modern browser with zero sign-up required.
Can I download the tones I generate?
Yes. Use the WAV export button on the Tone Generator to download a lossless 16-bit or 32-bit WAV file of your tone.
Why isn't my tone playing?
Most browsers require a user gesture (click/tap) before allowing audio playback. Make sure you click "Play" after setting your frequency. Also check your system volume and that no other application is blocking audio output.
Is the frequency output accurate?
Our generator uses the Web Audio API OscillatorNode which targets 0.001 Hz precision. Actual output accuracy depends on your operating system's audio stack and hardware drivers.