Reporting pattern
Interval becomes updates.
Updates per day are calculated from the reporting interval and the number of hours the device actively follows that interval.
FREE ENGINEERING TOOL · IOT SIM DATA PLANNING
IoT SIM Data Usage & Plan Sizing Calculator.
Estimate MB per device per month from reporting interval, payload and overhead. Add your own traffic buffer, then check whether a candidate SIM allowance and monthly price fit the fleet.
No sign-upRuns in your browserNo project-data uploadProvider-neutral plan check
IOT SIM DATA USAGE
Size the data requirement before comparing plans.
The starting values reproduce the previous 24-updates-per-day example as a 60-minute interval over 24 active hours. Replace them with your device and provider facts.
Use at least one device, an interval above zero, 0–24 active hours, non-negative payload/buffer/plan values and an overhead factor of 1 or more.
The 100 MB candidate allowance is an editable example, not a plan recommendation. A 0 plan price leaves cost outputs uncalculated.
DIRECTIONAL PLAN-SIZING MODEL
Updates / device / day—
Base data / device / month—
Planning target / device / month—
Fleet planning data / month—
Candidate allowance check—
Candidate fleet plan cost / month—
Candidate fleet plan cost / year—
Calculation: reporting frequency × payload × overhead × average month, then your additional traffic buffer. The candidate allowance check compares MB only; it does not validate coverage, roaming, pooling, expiry or contract terms.
WHAT THE MODEL INCLUDES
Make the data budget explicit.
Use the simple model to expose assumptions, then replace estimates with measured traffic and provider terms as the project matures.
Traffic
Payload is only the starting point.
The overhead factor lets you include protocol and session traffic. The separate buffer can represent project-specific retries, reconnects, downlinks, diagnostics or other measured extras.
Plan test
Check a real candidate allowance.
Enter a provider's usable monthly MB allowance and price to see whether it covers the modelled target and what that candidate plan would cost across the active fleet.
Important boundary
Actual bills can depend on minimum monthly charges, per-session rounding, pooled versus per-SIM allowances, signalling, SMS, voice, roaming, APN/VPN services, platform fees, taxes and provider-specific rules. Firmware downloads, bulk uploads and other non-routine traffic are excluded unless you deliberately include them in your inputs.
COMMON QUESTIONS
Use the estimate as a planning input, not a carrier promise.
The calculator stays provider-neutral because the commercial rules around IoT SIMs differ by network, geography and contract.
How much data does an IoT SIM use per month?
It depends on how often the device transmits, how large each payload is, protocol and session overhead, retries and other traffic. Use those inputs here rather than a generic device category.
Does this recommend a provider or tariff?
No. It checks the allowance and price you enter. Coverage, pooling, minimum charges, roaming, APN/VPN charges, session rounding and provider terms still need separate verification.
How much extra headroom should I add?
There is no universal percentage. Use field evidence where available and compare multiple buffer scenarios when retry, reconnection, downlink or update traffic is still uncertain.
NEXT STEP · PLANNING OR OPERATIONS
Carry the connectivity assumption into the wider decision.
Use Pro when you need scenario economics. Move into Connected Operations when you need an ongoing asset-status and operational-event workspace for the real fleet.
CONNECTED OPERATIONS · BUY DIRECT
From ZAR 1,200 / user / month
Maintain the asset register, operational status, event history and authorised team access in one secure browser workspace.
Open Connected OperationsCONNECTED-DEVICE ECONOMICS REPORT
ZAR 1,790
Model fleet growth, acquisition, recurring cost, expected benefit, TCO, ROI, NPV, payback and key cost drivers.
Prepare Economics ReportIOT DEPLOYMENT DECISION PACK
ZAR 3,990
Combine fleet economics with directional battery and telemetry assumptions, cross-domain sensitivities, risks and a validation plan.
Prepare Decision PackPro is the direct self-service purchase path. Decision Reports use the existing private MoleculeX order flow for one-project finished outputs.
RELATED ENGINEERING TOOLS
Keep telemetry, power and fleet economics connected.
Use the reporting-interval guide before locking a telemetry policy, then pressure-test its power and fleet-cost consequences.
Engineering guide
IoT reporting interval
Choose transmission frequency from data age, exception latency, battery behaviour and fleet impact.
Read the reporting-interval guide →Free tool · Power planning
Battery-Life Estimator
Pressure-test power assumptions that can drive replacement intervals and field-service cost.
Open Battery-Life Estimator →Free tool · Fleet economics
Fleet Cost Calculator
Put candidate connectivity cost alongside hardware, installation, growth and field-service assumptions.
Open Fleet Cost Calculator →MOLECULEX
Size the data, then choose planning or operations.
Keep the free estimate, use Pro for scenario economics, or move into Connected Operations when the real fleet needs a shared operational record.
NEXT STEP · DEPLOYMENT DECISION
How does this assumption change fleet cost?
Explore the free pilot checklist and see how power, data and costs combine in a documented deployment decision.