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IoT Data Usage Calculator

Estimate cellular or LPWAN data per day, month, and year from payload size, overhead, message rate, and device count.

Overhead is the per-message headers/handshake on top of your payload (TCP/IP + TLS is often 40–100+ bytes; a raw LPWAN frame far less).
Data per message–
Per device / day–
Fleet / month–
Fleet / year–
Data plan usage / month–

Estimating IoT data

A device's data bill is driven as much by overhead as payload: each message carries protocol headers, and for chatty transports the handshake can dwarf a few bytes of sensor data. This calculator totals both across your message rate and fleet size.

per message = payload + overhead

fleet / month ≈ per message × messages/day × devices × 30.44

Cutting message frequency, batching readings, or using a leaner transport (CoAP/UDP or a raw LPWAN frame instead of TCP+TLS) are the usual levers. Data here uses decimal units (1 kB = 1000 B), as mobile plans do.

Related

Pair this with the battery life calculatorto trade off how often a device reports against how long it runs.

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