Electronics
Ohm's law, resistor codes, LED calculators, and circuit tools.
208 tools available
555 Timer Calculator (Astable Mode)
Calculator
Electronics
555 Timer Calculator (Bistable Mode)
Calculator
Electronics
555 Timer Calculator (Frequency Divider)
Calculator
Electronics
555 Timer Calculator (Missing Pulse Detector)
Calculator
Electronics
555 Timer Calculator (Monostable Mode)
Calculator
Electronics
555 Timer Calculator (Pulse Stretcher)
Calculator
Electronics
555 Timer Calculator (Schmitt Trigger Mode)
Calculator
Electronics
Active Filter Order Calculator
Calculator
Electronics
ADC Averaging / Oversampling
Tool
Electronics
ADC Resolution Calculator
Calculator
Electronics
Air-Core Inductor Calculator
Calculator
Electronics
Aliased Frequency Calculator
Calculator
Electronics
All-Pass Filter Calculator
Calculator
Electronics
Antenna Gain Calculator
Calculator
Electronics
Antenna Length Calculator
Calculator
Electronics
Antenna Radiation Pattern Visualizer
Viewer
Electronics
Anti-Aliasing Filter Order Calculator
Calculator
Electronics
Audio Equalizer Calculator
Calculator
Electronics
AWG Current Capacity (Ampacity)
Tool
Electronics
Band-Pass Filter Calculator
Calculator
Electronics
Bandgap Reference Calculator
Calculator
Electronics
Battery C-Rate Calculator
Calculator
Electronics
Battery Cell Balance Current Calculator
Calculator
Electronics
Battery Discharge Time
Tool
Electronics
Battery Life Estimator
Estimator
Electronics
Battery Series/Parallel Calculator
Calculator
Electronics
Binary / Decimal / Hex Converter
Converter
Electronics
Bit Error Rate (BER) Calculator
Calculator
Electronics
BJT h-Parameters Calculator
Calculator
Electronics
BJT Power Dissipation
Tool
Electronics
BJT Voltage Divider Bias Calculator
Calculator
Electronics
Boost Converter Duty Cycle
Converter
Electronics
Boost Converter Duty Cycle Calculator
Calculator
Electronics
Buck Converter Calculator
Calculator
Electronics
Buck Input Capacitor RMS Current Calculator
Calculator
Electronics
Buck Output Inductor Ripple Calculator
Calculator
Electronics
Cable Crosstalk Calculator
Calculator
Electronics
CAN Bus Termination & Stub Calculator
Calculator
Electronics
Capacitive Reactance (Xc)
Tool
Electronics
Capacitor Calculator
Calculator
Electronics
Capacitor Charge/Discharge Calculator
Calculator
Electronics
Capacitor Code Decoder
Decoder
Electronics
Chip Select / Address Decoder
Calculator
Electronics
Clock Duty Cycle
Tool
Electronics
CMOS Inverter Delay Calculator
Calculator
Electronics
Coaxial Cable Loss
Tool
Electronics
Colpitts Oscillator Calculator
Calculator
Electronics
Common Collector (Emitter Follower) Calculator
Calculator
Electronics
Common Emitter Amplifier Calculator
Calculator
Electronics
CRC Calculator
Calculator
Electronics
Crest Factor
Tool
Electronics
Crystal Loading Capacitance Calculator
Calculator
Electronics
Current Mirror Calculator
Calculator
Electronics
DAC Output Calculator
Calculator
Electronics
Darlington Pair Calculator
Calculator
Electronics
dBm / mW / W / dBW Converter
Converter
Electronics
DDR Length-Match Budget Calculator
Calculator
Electronics
Decibel Calculator
Calculator
Electronics
Delta–Wye (Y) Conversion
Calculator
Electronics
Depth of Discharge (DoD)
Tool
Electronics
Differential Pair Impedance Calculator
Calculator
Electronics
Differential Termination Calculator
Calculator
Electronics
Diode Clamp Circuit Calculator
Calculator
Electronics
Diode Reverse Recovery Loss
Tool
Electronics
Efficiency Calculator
Calculator
Electronics
EMI Filter Designer
Tool
Electronics
Ethernet PHY Budget Calculator
Calculator
Electronics
Eye Diagram Height & Width Calculator
Calculator
Electronics
Fan CFM – Airflow Requirement
Tool
Electronics
FFT Bin Width
Tool
Electronics
FFT Size & Bin Resolution Calculator
Calculator
Electronics
FIR Filter Coefficient Quantization Calculator
Calculator
Electronics
Flicker Index (Approx)
Tool
Electronics
Fourier Series Visualizer
Viewer
Electronics
Frequency ↔ Period
Tool
Electronics
Frequency ↔ Wavelength
Tool
Electronics
Fresnel Zone Calculator
Calculator
Electronics
Friis Free-Space Path Loss Calculator
Calculator
Electronics
Fuse Size Calculator
Calculator
Electronics
Gray Code Converter
Converter
Electronics
Hamming Code Calculator
Calculator
Electronics
Harmonics Distortion (THD)
Tool
Electronics
Hartley Oscillator Calculator
Calculator
Electronics
HDMI TMDS Clock Calculator
Calculator
Electronics
Heatsink Thermal Resistance
Tool
Electronics
Induction Motor Slip
Tool
Electronics
Inductive Reactance (XL)
Tool
Electronics
Inductor DCR Current-Sense Calculator
Calculator
Electronics
Inductor Energy
Tool
Electronics
Inrush Current Calculator
Calculator
Electronics
I²C Pull-up Resistor Calculator
Calculator
Electronics
JFET Self-Bias Calculator
Calculator
Electronics
Junction-to-Case Temperature Rise
Tool
Electronics
Kirchhoff's Laws Reference
Reference
Electronics
kVA ↔ kW Converter
Converter
Electronics
LC Resonant Frequency Calculator
Calculator
Electronics
Lead-Acid Float / Absorb / Equalize Calculator
Calculator
Electronics
LED Matrix Power Calculator
Calculator
Electronics
LED Resistor Calculator
Calculator
Electronics
LFSR Maximal Period Calculator
Calculator
Electronics
Li-ion CC/CV Charge Profile Calculator
Calculator
Electronics
Li-ion SOC from OCV Calculator
Calculator
Electronics
LLC Resonant Converter Calculator
Calculator
Electronics
Load Factor (Electrical)
Tool
Electronics
Logic Gate Simulator
Tester
Electronics
Microstrip Trace Impedance Calculator
Calculator
Electronics
Mixer / Amp IP3 Calculator
Calculator
Electronics
MOSFET Body Diode Loss Calculator
Calculator
Electronics
MOSFET Gate Charge Loss
Tool
Electronics
MOSFET Gate Drive Calculator
Calculator
Electronics
Motor Current Estimator
Estimator
Electronics
Motor Inrush Current Calculator
Calculator
Electronics
Multi-Feedback (MFB) Bandpass Filter Calculator
Calculator
Electronics
Noise Figure Calculator
Calculator
Electronics
Noise Temperature ↔ Noise Figure Converter
Converter
Electronics
Notch Filter (Band-Reject) Calculator
Calculator
Electronics
Nyquist Sampling Check
Tool
Electronics
Ohm's Law Calculator
Calculator
Electronics
Op-Amp Gain Calculator
Calculator
Electronics
Op-Amp Offset Error
Tool
Electronics
Op-Amp Slew Rate Calculator
Calculator
Electronics
Oscillator Frequency Drift Estimator
Estimator
Electronics
Oscilloscope Bandwidth - Rise Time
Tool
Electronics
Parity Bit Calculator
Calculator
Electronics
PCB Stackup Impedance Planner
Calculator
Electronics
PCB Thermal Via Array Calculator
Calculator
Electronics
PCB Trace Width Calculator
Calculator
Electronics
PCB Via Inductance Calculator
Calculator
Electronics
Peukert's Law Runtime
Tool
Electronics
Phase Noise → Jitter Calculator
Calculator
Electronics
Photodiode Sensitivity / TIA Calculator
Calculator
Electronics
Pi / T Attenuator Calculator
Calculator
Electronics
Pierce Crystal Oscillator Calculator
Calculator
Electronics
PLL Loop Filter Calculator
Calculator
Electronics
Power Calculator
Calculator
Electronics
Power Derating with Temperature
Tool
Electronics
Power Factor Calculator
Calculator
Electronics
Power Factor Correction Calculator
Calculator
Electronics
Power Supply Filter Capacitor Calculator
Calculator
Electronics
Propagation Delay (RC)
Tool
Electronics
PWM Duty Cycle
Tool
Electronics
PWM Frequency Calculator
Calculator
Electronics
PWM to Voltage Calculator
Calculator
Electronics
Q Factor Calculator
Calculator
Electronics
Quantization Error Calculator
Calculator
Electronics
Quantization Noise Power
Tool
Electronics
Radar Range Equation Calculator
Calculator
Electronics
RC Filter Cutoff
Tool
Electronics
RC Phase Shift Calculator
Calculator
Electronics
RC Rise/Fall Time
Tool
Electronics
RC Time Constant Calculator
Calculator
Electronics
Receiver Sensitivity Calculator
Calculator
Electronics
Rectifier DC Output Calculator
Calculator
Electronics
Resistor Color Code
Reference
Electronics
Resistor Power Dissipation
Tool
Electronics
Return Loss Calculator
Calculator
Electronics
RF Link Budget Calculator
Calculator
Electronics
Ripple Voltage Calculator
Calculator
Electronics
RL Filter Calculator
Calculator
Electronics
RMS Calculator
Calculator
Electronics
RS-485 Bias & Termination Calculator
Calculator
Electronics
Sallen-Key High-Pass Filter Calculator
Calculator
Electronics
Sallen-Key Low-Pass Filter Calculator
Calculator
Electronics
Schmitt Trigger Threshold Helper
Tool
Electronics
SEPIC Converter Calculator
Calculator
Electronics
Serpentine Length-Match Calculator
Calculator
Electronics
Setup & Hold Time Margin
Tool
Electronics
Short-Circuit Current Calculator
Calculator
Electronics
Signal Wavelength in Cable
Tool
Electronics
Signal-to-Noise Ratio (SNR) Calculator
Calculator
Electronics
SINAD ↔ ENOB Calculator
Calculator
Electronics
Single-Phase Power Calculator
Calculator
Electronics
Skin Depth Calculator
Calculator
Electronics
SMPS Efficiency Estimator
Estimator
Electronics
Solar Panel Sizing Tool
Tool
Electronics
Sound Pressure Level (SPL)
Tool
Electronics
SPI Timing Budget Calculator
Calculator
Electronics
State-Variable Filter (KHN) Calculator
Calculator
Electronics
Stripline Trace Impedance Calculator
Calculator
Electronics
Supercapacitor Energy
Tool
Electronics
SWR Calculator
Calculator
Electronics
Temperature Coefficient Calculator
Calculator
Electronics
Thermal Resistance Chain
Tool
Electronics
Thermistor Resistance vs Temperature
Tool
Electronics
Thermocouple Reference Calculator
Calculator
Electronics
Thevenin / Norton Converter
Calculator
Electronics
Three-Phase Power Calculator
Calculator
Electronics
Total Harmonic Distortion (THD)
Tool
Electronics
Transformer Efficiency
Tool
Electronics
Transformer Inrush Current Calculator
Calculator
Electronics
Transformer Turns Ratio (Dedicated Tool)
Tool
Electronics
Transformer Turns Ratio Calculator
Calculator
Electronics
Transistor Base Resistor
Tool
Electronics
Transmitter Harmonics & Spur Calculator
Calculator
Electronics
Twin-T Passive Notch Calculator
Calculator
Electronics
Two's Complement Calculator
Calculator
Electronics
UART Baud Rate Calculator
Calculator
Electronics
UPS Runtime Calculator
Calculator
Electronics
USB Power Delivery Profiles Calculator
Calculator
Electronics
Voltage Divider
Calculator
Electronics
Voltage Drop Calculator
Calculator
Electronics
Voltage Unbalance Calculator
Calculator
Electronics
Wheatstone Bridge Calculator
Calculator
Electronics
Wien Bridge Oscillator Calculator
Calculator
Electronics
Wire Gauge Reference
Reference
Electronics
Zener Diode Biasing
Tool
Electronics
Ćuk Converter Calculator
Calculator
Electronics
λ/4 Impedance Matching Stub Calculator
Calculator
Electronics
Other Categories
Text & Encoding
Encoders, decoders, hashing, formatters, and string tools.
Numbers & Math
Unit converters, base converters, calculators, and math utilities.
Media & Files
Image, audio, video tools and file inspection utilities.
Image Converters
Convert between hundreds of image formats — client-side, no upload.
Color & Design
Color pickers, palette generators, contrast checkers, and gradient builders.
Web & Dev
JSON/XML formatters, URL tools, regex testers, and HTTP utilities.