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dB Calc

dB Calc

dB / Neper / Power / Voltage

5 ratings
10 reviews
📚 Education
🔍 Reference
$0.99

Details

Released
January 28, 2009
Updated
July 9, 2025

Features

Developer

Black Cat Systems
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About

This app simplifies RF signal measurement conversions. It handles decibel, neper, power, and voltage ratios, along with RMS waveform calculations for sine, square, and triangle waves. Easily convert between various units like dBmW, dBuV, and watts.

✓Decibel/Neper/Ratio Conversions
✓Decibel/Power/Voltage Calculations
✓Multiple Unit Support (dBmW, dBuV, Watts, Volts)
✓RMS Waveform Conversions
✓Sine, Square, Triangle Waveform Support
✓Resistance Input for Calculations
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What's New in dB Calc

3.0

July 9, 2025

Changes and improvements for new iOS updates.

User reviews

Most RecentHighest RatedLowest Rated

Several year user

Been using for five years for repeater maintainence. Quick and easy to use. An amazing range of tests and scales. I couldn’t work without it since I retired my slide rule. The battery wore out(!).
GGood-Fortune

please

I don’t need any upgrades of function but please fix display forced landscape I still need this app
Mmono326

M

Very handy. I use it all the time to check progress when designing and building tube guitar amps.
Ddjgibson51

Excellent tool for quick calculations

Use the app every day and find it to be very useful and accurate.
TBThe Audio Bug

Perfect

Use it daily.
FFughead
See 5 more reviews

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FAQ

What RF signal units can dB Calc convert between?

dB Calc supports conversions for decibels (dB), nepers (Np), power ratios (mW, W), and voltage ratios (uV, mV, V). It also includes specific units like dBmW and dBuV.

Does dB Calc support waveform conversions?

Yes, dB Calc can convert between RMS, peak, and peak-peak voltage and current values for sine, square, and triangle waveforms, given a user-entered resistance.

What devices is dB Calc available on?

dB Calc is available for iPhone, iPad, and iPod devices.

How often is dB Calc updated?

The latest version of dB Calc was released on July 9, 2025, indicating active development and updates.

What is the age rating for dB Calc?

dB Calc has an age rating of 4+, making it suitable for a wide range of users.

What are the different unit options in dB Calc?

dB Calc offers units such as dBmW, dBuV, dBu (audio), dBV, uW, mW, W, uV, mV, and V for various calculations.

How does dB Calc handle resistance in calculations?

You need to enter the resistance value before performing calculations involving power or voltage ratios, especially for RMS waveform conversions.

What is the price of dB Calc?

dB Calc is a paid application, priced at $0.99.