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16 categories with 200+ tools
Browse all 200+ electronics calculators and tools in one place.
Free digital electronics calculators for engineers, students, PCB designers, embedded developers, and technicians. Calculate logic circuits, binary, hexadecimal, flip-flops, counters, timing, digital communication, and other digital electronics parameters.
Professional engineering calculators for electronics, electrical, RF, industrial, and technical applications. Perform accurate engineering calculations, conversions, thermal analysis, reliability calculations, and other essential engineering tasks using free online tools from CalcBoy.
Free cable and connector calculators for engineers, technicians, installers, and networking professionals. Calculate cable loss, wire size, voltage drop, connector compatibility, impedance, coaxial cables, and transmission parameters.
Free PCB design calculators for engineers, PCB designers, students, and electronics professionals. Calculate PCB trace width, current capacity, impedance, copper thickness, via size, thermal relief, and other PCB design parameters.
Free power electronics calculators for engineers, technicians, students, and power system designers. Calculate power supplies, DC-DC converters, AC circuits, batteries, transformers, motors, efficiency, power factor, and electrical power parameters.
Free RF and microwave calculators for engineers, technicians, students, and wireless professionals. Calculate antennas, transmission lines, impedance, VSWR, wavelength, RF power, coaxial cables, filters, and microwave systems.
Instant color code calculators for 3, 4, 5, 6-band resistors, SMD codes, ceramic capacitors, and inductors with printable color charts on CalcBoy.Decode resistor, capacitor, inductor,diode,tentalium capacitor,ic, mosfet,disk type capacitor, wire, and electronic component color codes quickly and accurately.
Browse connector pinout references for electronics, automotive, industrial, networking, and communication connectors. Find accurate pin diagrams, pin assignments, wiring information, and connector specifications.
Browse development board pinouts for Arduino, ESP32, ESP8266, Raspberry Pi Pico, STM32, Teensy, NodeMCU, and other embedded development boards. Find GPIO maps, pin functions, power pins, communication interfaces, and hardware references.
Free engineering utility calculators for everyday technical calculations. Quickly solve unit conversions, percentages, electrical values, geometry, and other common engineering and electronics calculations.
Explore electronics engineering resources, reference guides, formulas, standards, charts, datasheets, engineering tables, design references, and technical documents for engineers, students, technicians, and electronics professionals.
Free active electronic components calculators for engineers, students, technicians, and circuit designers. Calculate transistor, MOSFET, BJT, JFET, SCR, TRIAC, optocoupler, regulator, and other active electronic component parameters.
Free passive electronic component calculators for engineers, students, technicians, and PCB designers. Calculate resistors, capacitors, inductors, transformers, RC circuits, RL circuits, filters, impedance, and other passive electronic parameters.
Free analog electronics calculators for engineers, students, technicians, and circuit designers. Calculate op-amp circuits, filters, amplifiers, ADC, DAC, voltage references, analog signals, and other essential analog electronics parameters.
Browse electronic circuit diagrams for power supplies, amplifiers, microcontrollers, RF circuits, filters, battery chargers, sensors, communication systems, and other electronics projects with clear schematics and references.
Explore electronic component packages used in PCB design and electronics manufacturing. Find package dimensions, footprints, pin layouts, and package information for ICs, transistors, diodes, resistors, capacitors, and other components.