Technology calculators

Use measured peak traffic and connection hold time to estimate the pool your application needs, then compare it with the database capacity available to every concurrent instance.

Enter the payload, protocol headers, VLAN tags, MTU, and link speed to see the wire-rate packet rate and useful application goodput. The result separates MAC frame bytes from the preamble and interframe gap byte-times that still consume the link.

Enter the LoRa and LoRaWAN packet settings to calculate time on air, hourly duty-cycle use, and the largest payload that still fits your airtime allowance.

Estimate the bytes used by MQTT PUBLISH traffic after QoS acknowledgments, MQTT 5 properties, TCP/IP headers, and TLS record overhead. The result also turns a monthly data allowance into the number of devices it can support at the entered message rate.

Estimate whether a PoE device can run on a proposed copper channel, then see the maximum length allowed by voltage, current, PSE power, and the 100-meter Ethernet channel limit.

Enter the supply, receiver threshold, cable impedance, topology, and node loading. The calculator chooses standard bias resistors and checks the idle voltage, termination correction, unit-load budget, current, and resistor power.

Enter link speed, RTT, packet loss, MSS, overhead, and receive window to estimate single-stream TCP throughput. The calculator also sizes the window, loss budget, and stream count needed for a target utilization.

Enter a realistic client load, PHY rate, retry rate, SSID count, and utilization target to estimate how many client-serving radios and access points the busy hour needs.

Enter a point-to-point wireless path to check both the radio budget and the first-Fresnel clearance at a limiting obstruction. The result shows whether the link meets your target fade margin and how much antenna height would be needed if clearance is short.