Home
Lost Reg Code?
News
Online KiwiSDRs
macOS Software
Windows Software
Ham Radio iPhone/iPad
Linux Software
Support/FAQ
Update Policy
USB Icom CI-V Interface
Radio Hobbyist Products
22m Programmable Beacon Kit
22m Part 15 Beacon Kit
CW Keyer For Beacons Kit
Jellyfish Transformer
Cyclops Antenna Transformer
General Interest Programs
Atomic Mac/PC
Audiocorder
Audio Toolbox
Black Cat Timer
Diet Sleuth
iUnit
Graffikon
Graph Paper Maker
Health Tracker
Image Resizer
Knitting Wizard
Label Wizard
Prog Audio Gen
Sound Byte
Synth 76477
Amateur Radio Programs
AirSpyHF+ Server
Audiocorder
Black Cat Absolute ACARS
Black Cat ACARS
Black Cat ALE
Black Cat ALE Vacuum Cleaner
Black Cat NetFinder
Black Cat GMDSS
Black Cat HF Fax
Black Cat SSTV
Black Cat NAVTEX SITOR-B
Carrier Sleuth
Cocoa 1090
Cocoa RTL Server
DGPS Decoding
DX Toolbox
Elmer
MatchMaker
KiwiKonnect
KiwiSDR Monitor
KiwiSDR Sound Client
MININEC Pro
Morse Mania
MultiMode
sdrRewind
RF Toolbox
SDRuno Plugin
SDRuno Equalizer Plugin
SelCall
Sonde
iPhone/iPad Apps
ALE
Atoms To Go
dB Calc
Clik Trak
DGPS Decoder
Drill Calc
DX Toolbox
Elmer Extra
Elmer General
Elmer Tech
Feld Hellschreiber
Field Strength Calc
Function Generator Pad
GMDSS
Godafoss
HF Weather Fax
iAttenuate
iFunctionGenerator
iSoundex
iSoundByte
iSweep
iUnit
Morse Mania
ACARS Pad
Morse Pad
NAVTEX Pad
Packet Pad
PSK31 Pad
SSTV Pad
Photon Calc
Rad Map Tracker
RF Link Calc
SelCall Tone Gen
Sound Byte
Sound Byte Control
Spectrum Pad
SWBC Schedules
Synth 76477
Synth Motion
Transmission Line Calc
Weather Calc
Wire Calc
iPhone/iPad Bundles
RF Calculator Apps
Ham Radio Decoder Apps
Audio Utility Apps
Shortwave Weather Apps
Ham Radio Exam Study Apps
Shortwave Decoder Apps
About Black Cat Systems
Site Map
Our software for Mac OSX
Privacy Policy
Press/Media
HFunderground
Apple /// Emulator
Macintosh Links
Shortwave Radio
Pirate Radio
Spy Numbers Stations
Science and Electronics
Ham Radio Software
dB Calc FAQ
iPhone Software to Perform dB / Neper / Power / Voltage 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 referenced to 1 mW power
dBuV - dB referenced to 1 uV
dBu - dB referenced to 0.7746 V (used in audio applications)
dBV - dB referenced to 1 V
uW - microwatts
mW - milliwatts
W - watts
uV - microvolts
mV - millivolts
V - volts