Thunderstorm Sounds
Powerful thunderstorm sounds for sleep or atmosphere. Heavy rain with distant thunder — many people find storms deeply calming.
Free. No sign-up. Runs in your browser.
About Thunderstorm Sounds
Powerful thunderstorm sounds for sleep or atmosphere. Heavy rain with distant thunder — many people find storms deeply calming. CalmLoop generates all sounds in your browser using the Web Audio API — no downloads, no tracking, no sign-up required.
How to Use
Click "Open Mixer" to launch the full sound mixer. Toggle individual sounds on and off, adjust their volume, and create your perfect mix. Set a timer to auto-stop after 15, 30, 60, or 120 minutes — perfect for falling asleep.
Why Ambient Sounds Help
Research shows that consistent background noise can mask distracting sounds, reduce anxiety, and improve focus. White and brown noise in particular have been shown to improve sleep quality and cognitive performance in multiple studies.