Global
Logic Modules
A centralized directory of 48 high-precision instruments engineered for rapid circuit verification and component analysis.
Basic Circuit
Ohm's Law Calculator
Solve voltage, current, resistance, or power
Voltage Divider Calculator
Loaded and unloaded divider output voltage
Current Divider Calculator
Branch current in a parallel resistor network
Electrical Power Calculator
Calculate watts, voltage, current, or resistance
Resistors
Capacitors & Filters
Series and Parallel Capacitor Calculator
Equivalent capacitance from a capacitor list
Low Pass / High Pass Filter Calculator
-3 dB cutoff for RC and RL filters
Reactance Calculator
Inductive and capacitive reactance
Time Constant Calculator
RC and RL transient constant
Capacitor Energy & Charge Calculator
Stored energy, charge, and time constant
LC Resonant Frequency Calculator
Tank circuit resonant frequency
Power & Battery
Battery Life Calculator
Estimate runtime from capacity and load current
Three Phase Calculator
Real, apparent, and reactive power
Transformer Turns Ratio Calculator
Voltage, current, and impedance transformation
LDO Voltage Regulator Calculator
Dropout, power dissipation, and thermal analysis
Buck/Boost Converter Calculator
Duty cycle, inductor, and ripple sizing
Solar Panel Energy Calculator
Daily energy yield and battery charging
PCB & Wiring
Analog & Signal
Digital & Embedded
555 Timer Calculator
Monostable and astable timing
I²C Pull-Up Resistor Calculator
Optimal pull-up for bus speed and capacitance
UART Baud Rate Error Calculator
Clock divider and baud rate accuracy
ADC/DAC Resolution Calculator
LSB size, ENOB, and dynamic range
Crystal Oscillator Load Capacitor Calculator
External capacitor selection for crystal accuracy
Procurement & BOM
Unit Conversions
Capacitance Conversion
Unit conversion and basic capacitor code decoding
Inductance Conversion
Picohenry to henry conversion
Temperature Conversion
Celsius, Fahrenheit, and Kelvin
Length Conversion
Metric and imperial distance units
Energy Conversion
BTU and joules
Force Conversion
N, kN, kgf, and lbf
Pressure Conversion
Pressure measurement units
Volume Conversion
Liquid volume units
Weight Conversion
Mass conversion units
Number Conversion
Binary, octal, decimal, hexadecimal, and shifts
Decimal Fraction Conversion
Closest fractional approximation
Reference Tables
Capacitor Safety Discharge Calculator
Solve discharge time or resistor value
Resistor Color Code Calculator
Decode 4, 5, or 6 band axial resistors
SMD Resistor Code Calculator
3-digit, 4-digit, and EIA-96 markings
SMD Capacitor Code Calculator
3/4 digit and EIA-198 capacitor markings
Electrical Plug Reference Calculator
Country plug compatibility reference
Wire Size Conversion Calculator
AWG to diameter and area