# Decibel calculator

> Utilities

Canonical page: [https://chrome-stats.com/d/id496124114](https://chrome-stats.com/d/id496124114)

## Overview

- **ID:** `id496124114`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** ZPP
- **Category:** Utilities
- **Version:** 2.2.1
- **Last updated:** 2025-12-14
- **First published:** 2012-01-26
- **Size:** 1.43 MB
- **Data as of:** 2026-09-21
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/decibel-calculator/id496124114)
- **Privacy policy:** [https://sites.google.com/view/db-calc-home-page](https://sites.google.com/view/db-calc-home-page)

## Description

Sound levels are usually expressed in a logarithmic scale called the decibels (dB). The decibels cannot be added or subtracted directly.
Each operation between decibel values requires to convert the sound level back to a linear scale using an antilog function.
The dB calculator app allows the direct addition or subtraction of dB levels. The app uses the following formula:

A + B = 10*LOG10(10^(A/10) + 10^(B/10)) 

For instance, 5dB + 5dB returns 8dB (3dB is added when doubling the sound level)  or 1dB + 2dB = 4.5dB.

## Rankings

- #1,026,492 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id496124114)