Convert from decimal to binary and back again quickly and easily. This application was designed specifically for those planning to use it during the setup of DMX lighting fixtures. This app is free and contains no ads. To keep it that way, maybe you could give it a good rating... I don't know, just a suggestion.

Added: Now when when you're in landscape mode, you can enter the number of addresses a fixture uses and easily see what the next fixture's address will be. Thanks to Huw for suggesting this feature.