---
title: "dB Calculator - Reviews, Revenue and Downloads in China | Apple App Store"
description: "The dBCalculator software comprises five independent calculation tools:  dBm Calculator: This tools helps to add and subtract an arbitrary number of power levels expressed in units of dBm and watt.  V"
---

# dB Calculator — China

![dB Calculator App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/2a/4e/49/2a4e4981-24e4-6632-135d-4f6b83891457/AppIcon-0-1x_U007emarketing-0-0-GLES2_U002c0-512MB-sRGB-0-0-0-85-220-0-0-0-7.png/400x400bb.png)

**Developer:** [Rohde & Schwarz GmbH & Co](https://apptail.io/developer/rohde-schwarz-gmbh-co-nkxb) (Germany)
**Category:** Productivity
**Rating:** 5.0/5 (6 ratings)
**Price:** Free
**Bundle ID:** com.rohde-schwarz.dbcalculator
**Store:** Apple App Store
**Country:** China
**Version:** 2.3 (released 2019-08-08)
**Original Release:** 2012-01-10

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/cn/app/app/id489100786)
**AppTail Page:** [https://apptail.io/app/db-calculator-FVZc/china](https://apptail.io/app/db-calculator-FVZc/china)

## dB Calculator Description
The dBCalculator software comprises five independent calculation tools:

dBm Calculator:
This tools helps to add and subtract an arbitrary number of power levels expressed in units of dBm and watt.

Voltage Calculator:
This tools helps to add and subtract correlated and uncorrelated voltage levels.

Unit Converter:
This tool calculates for an entry using a unit such as dBm, dBW, mW, W, mV, V, dBV, dBµV and dBu the corresponding values for all other units, for individual impedance values.

dB Converter:
This tool converts linear power and voltage ratios to dB and vice versa.

VSWR Converter:
This tool converts reflection quantities such as Voltage Standing Wave Ratio VSWR, reflection coefficient, reflected power, return loss and mismatch loss.

PLEASE NOTE: Calculations based on correlated vs uncorrelated levels yield very different results. If you see an unexpected result, please verify the uncorrelated/correlated setting of this app first!

The dBCalculator software is based on the application note
1GP77: R&S dBCalculator

by Rohde & Schwarz GmbH & Co. KG
www.rohde-schwarz.com/appnote/1GP77

## dB Calculator Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/ef/ef/dc/efefdc47-ea03-f9e8-bdcb-70f265c19f95/pr_source.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/59/7c/0d/597c0dc0-7cfc-44af-a80a-f18ccc7545ee/pr_source.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/29/d0/4a/29d04aae-41e8-f6e9-456c-ea427dc4feb7/pr_source.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/a7/16/12/a716120b-5f13-4f7f-ff07-19b3338333b5/pr_source.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/a8/e4/7d/a8e47d37-1f4a-e055-9d69-2c64b51a014a/pr_source.png/1242x2688.png)

## dB Calculator Rating Breakdown in China
- 5 stars: 6 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## dB Calculator Reviews in China

### ***** "很不错的软件"
👍
-- alexanderamd, 2020-09-19

### ***** "真的好用"
每次做实验算光功率的时候都用到了 特别赞
-- QAQ不科学, 2020-03-28

[View all dB Calculator reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)




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## dB Calculator Available In
- [China](https://apptail.io/app/db-calculator-FVZc/china)
- [Germany](https://apptail.io/app/db-calculator-FVZc/germany)
- [United States](https://apptail.io/app/db-calculator-FVZc/united-states)
- [Netherlands](https://apptail.io/app/db-calculator-FVZc/netherlands)
- [Taiwan](https://apptail.io/app/db-calculator-FVZc/taiwan)
- [Canada](https://apptail.io/app/db-calculator-FVZc/canada)
- [France](https://apptail.io/app/db-calculator-FVZc/france)
- [Japan](https://apptail.io/app/db-calculator-FVZc/japan)
- [Brazil](https://apptail.io/app/db-calculator-FVZc/brazil)
- [India](https://apptail.io/app/db-calculator-FVZc/india)
- [Switzerland](https://apptail.io/app/db-calculator-FVZc/switzerland)
- [Chile](https://apptail.io/app/db-calculator-FVZc/chile)
- [Colombia](https://apptail.io/app/db-calculator-FVZc/colombia)
- [Czechia](https://apptail.io/app/db-calculator-FVZc/czechia)
- [Denmark](https://apptail.io/app/db-calculator-FVZc/denmark)
- [Dominican Republic](https://apptail.io/app/db-calculator-FVZc/dominican-republic)
- [Algeria](https://apptail.io/app/db-calculator-FVZc/algeria)
- [Ecuador](https://apptail.io/app/db-calculator-FVZc/ecuador)
- [Estonia](https://apptail.io/app/db-calculator-FVZc/estonia)
- [Egypt](https://apptail.io/app/db-calculator-FVZc/egypt)
- [Spain](https://apptail.io/app/db-calculator-FVZc/spain)
- [Finland](https://apptail.io/app/db-calculator-FVZc/finland)
- [United Kingdom](https://apptail.io/app/db-calculator-FVZc/united-kingdom)
- [Greece](https://apptail.io/app/db-calculator-FVZc/greece)
- [Hong Kong SAR China](https://apptail.io/app/db-calculator-FVZc/hong-kong)
- [Croatia](https://apptail.io/app/db-calculator-FVZc/croatia)
- [Hungary](https://apptail.io/app/db-calculator-FVZc/hungary)
- [Indonesia](https://apptail.io/app/db-calculator-FVZc/indonesia)
- [Ireland](https://apptail.io/app/db-calculator-FVZc/ireland)
- [Israel](https://apptail.io/app/db-calculator-FVZc/israel)
- [Iceland](https://apptail.io/app/db-calculator-FVZc/iceland)
- [Italy](https://apptail.io/app/db-calculator-FVZc/italy)
- [South Korea](https://apptail.io/app/db-calculator-FVZc/south-korea)
- [Kuwait](https://apptail.io/app/db-calculator-FVZc/kuwait)
- [Kazakhstan](https://apptail.io/app/db-calculator-FVZc/kazakhstan)
- [Lebanon](https://apptail.io/app/db-calculator-FVZc/lebanon)
- [Lithuania](https://apptail.io/app/db-calculator-FVZc/lithuania)
- [Luxembourg](https://apptail.io/app/db-calculator-FVZc/luxembourg)
- [Madagascar](https://apptail.io/app/db-calculator-FVZc/madagascar)
- [North Macedonia](https://apptail.io/app/db-calculator-FVZc/north-macedonia)
- [Mexico](https://apptail.io/app/db-calculator-FVZc/mexico)
- [Malaysia](https://apptail.io/app/db-calculator-FVZc/malaysia)
- [Nigeria](https://apptail.io/app/db-calculator-FVZc/nigeria)
- [Norway](https://apptail.io/app/db-calculator-FVZc/norway)
- [Nepal](https://apptail.io/app/db-calculator-FVZc/nepal)
- [New Zealand](https://apptail.io/app/db-calculator-FVZc/new-zealand)
- [Peru](https://apptail.io/app/db-calculator-FVZc/peru)
- [Philippines](https://apptail.io/app/db-calculator-FVZc/philippines)
- [Pakistan](https://apptail.io/app/db-calculator-FVZc/pakistan)
- [Poland](https://apptail.io/app/db-calculator-FVZc/poland)
- [Portugal](https://apptail.io/app/db-calculator-FVZc/portugal)
- [Romania](https://apptail.io/app/db-calculator-FVZc/romania)
- [Saudi Arabia](https://apptail.io/app/db-calculator-FVZc/saudi-arabia)
- [Sweden](https://apptail.io/app/db-calculator-FVZc/sweden)
- [Singapore](https://apptail.io/app/db-calculator-FVZc/singapore)
- [Slovenia](https://apptail.io/app/db-calculator-FVZc/slovenia)
- [Slovakia](https://apptail.io/app/db-calculator-FVZc/slovakia)
- [Thailand](https://apptail.io/app/db-calculator-FVZc/thailand)
- [Türkiye](https://apptail.io/app/db-calculator-FVZc/turkey)
- [Ukraine](https://apptail.io/app/db-calculator-FVZc/ukraine)
- [Uzbekistan](https://apptail.io/app/db-calculator-FVZc/uzbekistan)
- [Vietnam](https://apptail.io/app/db-calculator-FVZc/vietnam)
- [United Arab Emirates](https://apptail.io/app/db-calculator-FVZc/united-arab-emirates)
- [South Africa](https://apptail.io/app/db-calculator-FVZc/south-africa)
- [Armenia](https://apptail.io/app/db-calculator-FVZc/armenia)
- [Argentina](https://apptail.io/app/db-calculator-FVZc/argentina)
- [Austria](https://apptail.io/app/db-calculator-FVZc/austria)
- [Australia](https://apptail.io/app/db-calculator-FVZc/australia)
- [Azerbaijan](https://apptail.io/app/db-calculator-FVZc/azerbaijan)
- [Belgium](https://apptail.io/app/db-calculator-FVZc/belgium)
- [Bulgaria](https://apptail.io/app/db-calculator-FVZc/bulgaria)
- [Bahrain](https://apptail.io/app/db-calculator-FVZc/bahrain)
- [Brunei](https://apptail.io/app/db-calculator-FVZc/brunei)

---

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