dB Calc
dB / Neper / Power / Voltage
$0.99
2.0for iPhone, iPad and more
Age Rating
dB Calc Screenshots
About dB Calc
Need to quickly convert between various RF signal measurement units? dB Calc performs lots of decibel related conversions:
Decibel / Neper / Ratio Conversions:
Enter in either the dB, Np (nepers), power or voltage ratio, and the other values will be calculated.
Decibel / Power / Voltage Calculations:
Enter in the one known value, and the others will be calculated. Select the correct units before entering in the value. You can change the units of the displayed (calculated values) by selecting the new units. Enter in the resistance before entering in the known value.
The following units are available:
dBmW - dB ref to 1 mW power
dBuV - dB ref to 1 uV
dBu - dB ref to 0.7746 V (audio)
dBV - dB ref to 1 V
uW - microwatts
mW - milliwatts
W - watts
uV - microvolts
mV - millivolts
V - volts
RMS Waveforms Conversions:
Conversion between rms, peak, peak-peak voltage and current values for a user entered resistance. Sine, square, and triangle waveforms are supported.
Get your copy of dB Calc today, and take the hassle out of dB related conversions.
Decibel / Neper / Ratio Conversions:
Enter in either the dB, Np (nepers), power or voltage ratio, and the other values will be calculated.
Decibel / Power / Voltage Calculations:
Enter in the one known value, and the others will be calculated. Select the correct units before entering in the value. You can change the units of the displayed (calculated values) by selecting the new units. Enter in the resistance before entering in the known value.
The following units are available:
dBmW - dB ref to 1 mW power
dBuV - dB ref to 1 uV
dBu - dB ref to 0.7746 V (audio)
dBV - dB ref to 1 V
uW - microwatts
mW - milliwatts
W - watts
uV - microvolts
mV - millivolts
V - volts
RMS Waveforms Conversions:
Conversion between rms, peak, peak-peak voltage and current values for a user entered resistance. Sine, square, and triangle waveforms are supported.
Get your copy of dB Calc today, and take the hassle out of dB related conversions.
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What's New in the Latest Version 2.0
Last updated on May 4, 2022
Old Versions
Updates for latest iOS
Show More
Version History
2.0
May 4, 2022
Updates for latest iOS
1.6
May 9, 2017
Updates for iOS 10.3
1.5
Oct 28, 2013
Updates for iOS 7
1.4
Jan 4, 2013
Updates for iOS 6
1.3
Jun 26, 2010
Added RMS (root mean squared) calculations for sine, square, and triangle waveforms.
Universal app for the iPad.
Universal app for the iPad.
1.2
Sep 2, 2009
Changing the resistance will now update the power, voltage, and decibel fields.
1.1
Apr 30, 2009
Added conversions to and from dBmV
1.0.0
Jan 27, 2009
dB Calc FAQ
Click here to learn how to download dB Calc in restricted country or region.
Check the following list to see the minimum requirements of dB Calc.
iPhone
Requires iOS 9.0 or later.
iPad
Requires iPadOS 9.0 or later.
iPod touch
Requires iOS 9.0 or later.
dB Calc supports English