# Snap Decibel Meter

> Free, browser-based decibel meter and noise reference library. Measure sound levels with your phone or laptop microphone — no app, no signup, audio processed locally.

Snap Decibel Meter (snapdecibelmeter.com) provides a real-time online sound level meter plus an editorial library of noise-level guides covering everyday sounds, hearing safety thresholds (OSHA, NIOSH, WHO, CDC), and practical noise reduction advice. Audio is analyzed in the browser via the Web Audio API and never recorded, stored, or transmitted.

## Core tools

- [Noise Meter](/tool): Real-time decibel meter with 0–100 Noise Score, history graph, and shareable result cards.
- [Decibel Chart](/decibel-chart): Color-coded visual chart of 50+ everyday sounds from 0–140 dB with safe exposure times.
- [Sound Comparison](/sound-comparison): Interactive ranked comparison of 30+ sounds, filterable by category.
- [Noise Calculator](/noise-calculator): Inverse-square-law calculator estimating how loud a source is at a given distance.
- [How Loud Is...?](/how-loud-is): Hub of noise-level guides for 100+ specific sounds with safety badges.

## Reference

- [Articles](/articles): Editorial guides on noise measurement, hearing safety, and acoustics.
- [How It Works](/how-it-works): How the Web Audio API is used to estimate decibels in the browser.
- [FAQ](/faq): Accuracy, calibration, microphone limits, privacy, and browser support.
- [Microphone Help](/microphone-help): Troubleshooting microphone permissions across OS and browsers.
- [Editorial Standards](/editorial-standards): How content is sourced (OSHA, NIOSH, WHO, CDC) and reviewed.
- [About](/about): Mission and design philosophy.

## Featured guides

- [Complete Guide to Noise Levels and Decibels](/articles/complete-guide-noise-levels-decibels)
- [Safe Noise Levels for Daily Exposure](/articles/safe-noise-levels-daily-exposure)
- [How Loud Is a Lawn Mower? (2026 dB Guide)](/articles/how-loud-is-a-lawn-mower)
- [Concert and Festival Noise Levels](/articles/concert-festival-noise-levels)
- [Phone as a Noise Meter — Accuracy](/articles/phone-as-noise-meter)

## Optional

- [Privacy Policy](/privacy)
- [Terms of Service](/terms)
- [Disclaimer](/disclaimer)
- [Cookie Policy](/cookie-policy)
- [Contact](/contact)