# RF Wireless World

## Home of RF and Wireless Vendors and Resources

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## LoRa Sensitivity Calculator | LoRa Sensitivity Formula

This page mentions LoRa Sensitivity calculator. It mentions LoRa Sensitivity calculation Formula. LoRa Sensitivity calculator takes spreading factor, bandwidth and noise figure as inputs and provides Sensitivity as output.

Following table is used in this calculator.

SF (Spreading Factor) Chips/Symbol SNR limit Time on Air for 10 byte packet (ms) Bit Rate (bps)
7 128 -7.5 56 5470
8 256 -10 103 3125
9 512 -12.5 205 1758
10 1024 -15 371 977
11 2048 -17.5 741 537
12 4096 -20 1483 293

### LoRa Sensitivity Calculator

Spreading Factor, 'SF' (7/8/9/10/11/12) (input1) :

Bandwidth, 'BW' in KHz (7.8 / 10.4 / 15.6 / 20.8 / 31.25 / 41.7 / 62.5 / 125 / 250 / 500) (input2) :

Noise Figure, 'NF' in dB (input3) :

*Note: Enter values in INPUT boxes and Press CALCULATE button to check OUTPUTS.

LoRa Sensitivity in dBm (Output):

EXAMPLE of LoRa Sensitivity Calculator:
INPUTS : SF = 12, BW =125 KHz, NF = 6dB, (Calculator internally gives SNR of -20 dB according to SF entered)
OUTPUTS: LoRa Sensitivity = -137 dBm

### Formula/Equations used in LoRa Sensitivity Calculator

Following LoRa Sensitivity formula/equation is used in this LoRa sensitivity calculator.

Also refer LoRa tutorial and LoRa technology basics which mentions LoRa system features, protocol stack, physical layer, MAC layer, frequency bands, LoRa Classes, LoRa transceiver etc.

### LoRa Calculators

The LoRa Wireless tutorial covers following sub topics:
Main page LoRa tutorial   LoRa Frequency Bands   LoRa protocol stack   LoRa MAC layer   LoRaWAN classes   LoRa features   LoRa Transceiver module   LoRaWAN wireless transceiver vendors

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