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300+ Electronics calculators I calcboy

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All Calculators

All Calculators

Browse all 260+ electronics calculators and tools in one place.

260+ tools
Digital Electronics & Logic Circuit Calculators

Digital Electronics & Logic Circuit Calculators

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.

11 tools
Electrical & Engineering Calculators

Electrical & Engineering Calculators

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.

15 tools
Cable, Wire Gauge & Voltage Drop Calculators

Cable, Wire Gauge & Voltage Drop Calculators

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.

12 tools
PCB Design & Trace Calculators (IPC Standards)

PCB Design & Trace Calculators (IPC Standards)

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.

20 tools
Power Electronics & SMPS Design Calculators

Power Electronics & SMPS Design Calculators

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.

16 tools
RF & Microwave Engineering Calculators

RF & Microwave Engineering Calculators

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.

44 tools
Electronic Color Code Calculators & Charts

Electronic Color Code Calculators & Charts

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.

16 tools
Connector Pinouts & Wiring Diagrams

Connector Pinouts & Wiring Diagrams

Browse connector pinout references for electronics, automotive, industrial, networking, and communication connectors. Find accurate pin diagrams, pin assignments, wiring information, and connector specifications.

6 tools
Development Board Pinouts & GPIO Reference

Development Board Pinouts & GPIO Reference

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.

18 tools
Engineering Utility Tools & Converters

Engineering Utility Tools & Converters

Free engineering utility calculators for everyday technical calculations. Quickly solve unit conversions, percentages, electrical values, geometry, and other common engineering and electronics calculations.

11 tools
Electronics Engineering Resources, Charts & Tables

Electronics Engineering Resources, Charts & Tables

Explore electronics engineering resources, reference guides, formulas, standards, charts, datasheets, engineering tables, design references, and technical documents for engineers, students, technicians, and electronics professionals.

26 tools
Active Component & Semiconductor Calculators

Active Component & Semiconductor Calculators

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.

4 tools
Passive Component Calculators (RLC Circuits)

Passive Component Calculators (RLC Circuits)

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.

23 tools
Analog Electronics & Op-Amp Calculators

Analog Electronics & Op-Amp Calculators

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.

19 tools
Electronic Circuit Diagrams & 555 Timer Projects

Electronic Circuit Diagrams & 555 Timer Projects

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.

8 tools
Electronic Component Packages & Footprint Guide

Electronic Component Packages & Footprint Guide

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.

11 tools

Latest Articles

Electronics tutorials, guides & tips

SAR (Specific Absorption Rate) Calculator: RF Exposure, EMF Safety & FCC Compliance Guide
Calc Boy Team · Aug 03, 2026

SAR (Specific Absorption Rate) Calculator: RF Exposure, EMF Safety & FCC Compliance Guide

Learn how to calculate Specific Absorption Rate (SAR), RF exposure, electric field strength, power density, and tissue energy absorption using accurate engineering formulas and practical wireless communication examples. Understand tissue conductivity, mass density, electric field intensity, frequency, RF safety limits, FCC regulations, ICNIRP guidelines, and electromagnetic energy absorption in biological tissues. Explore applications in smartphones, Wi-Fi devices, 5G networks, wearable electronics, medical RF equipment, antennas, EMC testing, and RF compliance analysis. This complete engineering guide is ideal for RF engineers, communication professionals, electronics students, wireless researchers, compliance engineers, and safety specialists. Use our free SAR (Specific Absorption Rate) Calculator for fast, accurate, and reliable RF exposure assessment.

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RF Field Strength Calculator: Electric Field (E), Magnetic Field (H) & RF Signal Analysis Guide
Calc Boy Team · Aug 03, 2026

RF Field Strength Calculator: Electric Field (E), Magnetic Field (H) & RF Signal Analysis Guide

Learn how to calculate RF electric field strength (E), magnetic field strength (H), power density, antenna gain, EIRP, and free-space propagation using accurate RF engineering formulas and practical communication examples. Understand electromagnetic wave propagation, far-field calculations, antenna radiation, inverse square law, transmitter power, and RF exposure analysis for reliable wireless system design. Explore applications in LTE, 5G, Wi-Fi, microwave links, satellite communication, radar systems, EMC testing, RF safety, and antenna engineering. This complete engineering guide is ideal for RF engineers, communication professionals, electronics students, wireless technicians, and antenna designers. Use our free RF Field Strength Calculator for fast, accurate, and reliable RF field analysis.

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Power Density Calculator: RF Power Flux Density, Antenna Radiation & EM Field Guide
Calc Boy Team · Aug 03, 2026

Power Density Calculator: RF Power Flux Density, Antenna Radiation & EM Field Guide

Learn how to calculate RF power density, power flux density, electric field strength, antenna radiation, and free-space propagation using accurate engineering formulas and practical wireless communication examples. Understand transmitter power, antenna gain, EIRP, distance, inverse square law, electromagnetic field intensity, and RF exposure levels for reliable RF system analysis. Explore applications in satellite communication, radar systems, LTE, 5G, Wi-Fi, microwave links, RF safety assessments, EMC testing, and antenna engineering. This complete engineering guide is ideal for RF engineers, communication professionals, electronics students, wireless technicians, and antenna designers. Use our free Power Density Calculator for fast, accurate, and reliable RF power density analysis.

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MDS (Minimum Detectable Signal) Calculator: Receiver Sensitivity, Noise Floor & RF Link Budget Guide
Calc Boy Team · Aug 03, 2026

MDS (Minimum Detectable Signal) Calculator: Receiver Sensitivity, Noise Floor & RF Link Budget Guide

Learn how to calculate Minimum Detectable Signal (MDS), receiver sensitivity, thermal noise floor, noise figure, bandwidth, and signal-to-noise ratio using accurate RF engineering formulas and practical communication examples. Understand how receiver noise figure, system bandwidth, temperature, gain, and required SNR determine the weakest detectable RF signal in wireless systems. Explore applications in LTE, 5G NR, Wi-Fi, microwave links, satellite communication, SDR, radar, spectrum analyzers, IoT devices, and RF receiver design. This complete engineering guide is ideal for RF engineers, communication engineers, electronics students, wireless researchers, technicians, and spectrum measurement professionals. Use our free MDS (Minimum Detectable Signal) Calculator for fast, accurate, and reliable receiver sensitivity analysis.

Read More
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