Modulation Index
Calculate AM envelope modulation index or FM modulation index with Carson bandwidth. The formulas are kept explicit for communication-system lab checks and satellite/RF link education.
Modulation index
0.500
AM m
Modulation
50.0%
Envelope depth
Classification
Valid
First-order lab classification
Modulated waveform
Envelope depth changes amplitude
Open Source and Easy to Use Elsewhere
This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.
Open source: review the implementation and see how the results are produced.
Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.