LoRaWAN Airtime Calculator
Calculate LoRaWAN transmission time on air for EU868 region
Parameters
LoRaWAN overhead (13 bytes) added automatically
Auto-enabled when symbol time > 16ms
Results
Time on Air:
0 ms
Total Frame Size:
0 bytes
Symbol Time:
0 ms
Preamble Time:
0 ms
Payload Symbols:
0
Total Symbols:
0
Duty Cycle Info (EU868 1%)
Wait time between transmissions: 0 s
Max transmissions per hour: 0
About LoRaWAN Airtime
The time on air (airtime) is the time the radio transmitter is actually transmitting. In Europe (EU868), devices must comply with a 1% duty cycle, meaning they can only transmit for 36 seconds per hour on most channels.
Key factors affecting airtime:
- Spreading Factor (SF): Higher SF = longer airtime but better range
- Bandwidth (BW): Higher BW = shorter airtime
- Payload Size: More bytes = longer airtime
- Coding Rate: Higher CR = more error correction but longer airtime