IoT & IIoT Tools

Test MQTT publish and subscribe flows from the browser for IoT debugging and quick integration checks.

Free sensor unit converter online - Convert sensor readings between different units instantly. Temperature (Celsius, Fahrenheit, Kelvin), pressure, humidity, and more. Perfect for IoT developers, engineers, and data analysis. Multiple sensor types, accurate conversions, completely free.

Free Modbus encoder decoder online - Encode and decode Modbus RTU/TCP packets instantly. Convert between hex, binary, and structured formats. Perfect for industrial automation, PLC programming, and Modbus communication. Fast, accurate, completely free Modbus tool.

Free serial data parser online - Parse and simulate serial data streams instantly. Convert between hex, ASCII, binary, and structured formats. Perfect for embedded systems, IoT development, and serial communication debugging. Real-time parsing, completely free tool.

Free IoT JSON formatter online - Format and validate IoT JSON payloads instantly. Structure sensor data, device telemetry, and MQTT messages. Perfect for IoT development, data analysis, and API integration. Syntax highlighting, validation, completely free IoT tool.

Look up BLE service and characteristic UUIDs to identify device capabilities faster.

Free OPC-UA NodeID generator online - Generate and parse OPC-UA NodeIDs instantly. Convert between numeric, string, GUID, and byte string formats. Perfect for industrial automation, SCADA systems, and OPC-UA development. Fast, accurate, completely free OPC-UA tool.

Free Ohm's Law calculator online - Calculate voltage, current, resistance, and power using Ohm's Law instantly. Perfect for electronics, electrical engineering, and circuit design. Multiple calculation modes, step-by-step solutions, completely free. Essential tool for engineers and students.

Free resistor color code decoder online - Decode resistor color bands to get resistance value, tolerance, and temperature coefficient instantly. Supports 4, 5, and 6-band resistors. Perfect for electronics, circuit design, and component identification. Visual guide, completely free tool.

Free battery life calculator online - Calculate battery runtime based on capacity, current draw, and voltage instantly. Perfect for IoT devices, wearables, portable electronics, and battery selection. Accurate calculations, multiple battery types, completely free. Essential IoT tool.

Free RF antenna frequency calculator online - Calculate frequency, wavelength, and antenna length instantly. Perfect for RF design, wireless communication, IoT antenna sizing, and radio frequency planning. Multiple frequency bands, accurate calculations, completely free. Essential RF tool.

Free PCB trace width calculator online - Calculate PCB trace width based on current, temperature rise, and copper thickness instantly. Perfect for PCB design, power routing, and circuit board layout. IPC-2221 compliant, accurate calculations, completely free. Essential PCB design tool.

Free LED resistor calculator online - Calculate the resistor value needed for LEDs based on supply voltage, forward voltage, and current instantly. Perfect for LED circuit design, Arduino projects, and electronics. Multiple LED configurations, accurate calculations, completely free. Essential LED tool.

Free voltage divider designer online - Design voltage divider circuits instantly. Calculate output voltage, resistor values, current, and power dissipation. Perfect for analog circuit design, sensor interfacing, and voltage regulation. Step-by-step design, completely free. Essential electronics tool.

Free power consumption estimator online - Estimate power consumption and energy costs instantly. Calculate daily, monthly, and yearly electricity costs based on device power ratings. Perfect for energy planning, cost estimation, and device selection. Accurate calculations, completely free. Essential energy tool.

Free CoAP packet builder online - Build CoAP (Constrained Application Protocol) packets instantly. Create CoAP messages with headers, tokens, options, and payloads for IoT communication. Perfect for IoT development, M2M communication, and CoAP testing. Fast, accurate, completely free CoAP tool.

Free PLC timer calculator online - Calculate PLC timer values for TON (Timer On Delay), TOF (Timer Off Delay), and RTO (Retentive Timer On) instantly. Perfect for industrial automation programming, ladder logic, and PLC development. Multiple timer types, accurate calculations, completely free.

Free RPM to linear speed calculator online - Convert rotational speed (RPM) to linear speed instantly. Calculate linear velocity based on diameter, radius, or circumference. Perfect for motor calculations, conveyor systems, and mechanical engineering. Accurate conversions, completely free. Essential engineering tool.

Free conveyor speed calculator online - Calculate conveyor belt speed, throughput, and capacity instantly. Perfect for material handling, production line design, and industrial automation. Multiple calculation modes, accurate results, completely free. Essential manufacturing and logistics tool.

Free sensor debounce calculator online - Calculate debounce time for proximity sensors and PLC input filtering instantly. Prevent false triggers and ensure reliable sensor readings in industrial applications. Perfect for automation, sensor design, and noise filtering. Accurate calculations, completely free.

Free pneumatic cylinder force calculator online - Calculate pneumatic cylinder force based on pressure, cylinder diameter, and efficiency instantly. Perfect for pneumatic system design, cylinder selection, and automation. Accurate calculations, multiple cylinder types, completely free. Essential pneumatic tool.

Free industrial motor power calculator online - Calculate motor power, torque, efficiency, and current instantly. Perfect for motor selection, sizing, and performance analysis in industrial applications. Multiple motor types, accurate calculations, completely free. Essential industrial automation tool.