// reference · mcs rate calculator
802.11 MCS Rate Calculator
Select standard, channel width, spatial streams, MCS index, and guard interval. Get the exact data rate, modulation type, minimum RSSI, and the full IEEE-spec calculation showing every step of the math.
— Shankar K. · Rates per IEEE 802.11-2020 / 802.11be-2024
// data rate
—
Mbps
// modulation
—
Coding rate —
// min rssi
—
dBm minimum
signal requirement
-90 dBm -40 dBm
// field note
// how this rate is calculated — ieee 802.11 spec
// all mcs —
| MCS | Modulation | Code | Data Rate | Min RSSI |
|---|
// read mcs in wireshark
radiotap.mcs.indexMCS index — 802.11n frames
radiotap.vht.mcs.0MCS index — 802.11ac frames
radiotap.he.data_rateData rate — 802.11ax frames
radiotap.dbm_antsignalRSSI — compare to min above
See MCS per frame in a real PCAP
Upload a capture — WiFi Analyser decodes MCS index, spatial streams, RSSI, and guard interval per frame automatically.
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SK
— Shankar K., Wi-Fi engineer, Irving TX
Building WiFi Analyser V2 · CWNA-109 in progress · one post every two weeks
Building WiFi Analyser V2 · CWNA-109 in progress · one post every two weeks
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