Conversion and Electronics Calculators
Fast and simple interactive tools for engineering, laboratories, and simulation.
Ohm's Law Calculator
Calculate the relationships between current, voltage, resistance, and power in electrical circuits.
Resistor Color Code Calculator
Decode the value and tolerance of axial lead resistors based on their color bands.
Proteus Transformer Calculator
Calculate mutual inductance, coupling factor, and reactance for Proteus simulation.
Parallel and Series Resistor Calculator
Calculate the equivalent resistance of multiple resistors connected in series or parallel.
Voltage Divider Calculator
Easily calculate the output voltage of a resistive voltage divider circuit.
SMD Resistor Code Calculator
Determine the resistance value of an SMD resistor using 3-digit, 4-digit, and EIA-96 codes.
Low-Pass/High-Pass Filter Calculator
Calculate the -3 dB cutoff frequency for passive RC, RL, and LC filters.
555 Timer Calculator
Determine pulse width, frequency, and duty cycle for astable and monostable 555 timer configurations.
RF Attenuator Calculator
Calculate resistor values for T, Pi, reflection, and bridged-T RF attenuators.
Battery Life Calculator
Estimate battery run time based on battery capacity (mAh) and device load current (mA).
Capacitance Conversion Calculator
Convert capacitor codes to values and convert between units like pF, nF, µF, and F.
Capacitor Safety Discharge Calculator
Calculate the time and resistance required to discharge a capacitor to a safe voltage level.
Current Divider Calculator
Calculate the current passing through any branch of parallel resistors.
dBm to Watts Conversion Calculator
Quickly convert RF power between decibel-milliwatts (dBm) and Watts.
Decimal to Fraction Conversion
Convert decimal numbers to the nearest common fraction for precise physical measurements.
Energy Conversion Calculator
Convert between Joules (J), BTUs, Calories, Kilowatt-hours (kWh), and more.
Force Conversion Calculator
Convert mechanical force units like Newtons (N), Kilonewtons (kN), Kilograms-force (kgf), and Pounds-force.
Frequency to Wavelength Calculator
Calculate wavelength from radio frequency and viceversa.
Inductance Conversion Calculator
Convert between inductance units like Henries (H), millihenries, microhenries, nanohenries, etc.
LED Series Resistor Calculator
Determine the correct series resistor to protect an LED given supply voltage, forward voltage, and current.
Length Conversion Calculator
Convert metric and imperial length units including meters, millimeters, inches, feet, and yards.
Number System Converter
Convert numbers quickly between decimal, hexadecimal, octal, and binary systems.
PCB Trace Width Calculator
Calculate the required trace width for a specified current using IPC-2221 formulas.
Pressure Conversion Calculator
Convert between pressure units like psi, bar, pascals (Pa), atmospheres, and inches of water.
Reactance Calculator
Calculate inductive and capacitive reactance as well as admittance from component values and frequency.
Parallel and Series Capacitor Calculator
Calculate the total capacitance for multiple capacitors connected in series or parallel.
SMD Capacitor Code Calculator
Determine capacitance value and tolerance from 3-digit, 4-digit, or EIA-198 SMD markings.
Temperature Conversion Calculator
Convert temperatures instantly between Celsius, Fahrenheit, Kelvin, and Rankine.
Three-Phase Power Calculator
Estimate real, apparent, and reactive power of three-phase AC systems (delta or wye).
RC Time Constant Calculator
Calculate the resistor-capacitor (RC) circuit time constant (Tau), stored energy, and charge.
PCB Trace Impedance Calculator
Calculate microstrip and stripline characteristic impedance on PCBs using IPC-2141 standard formulas.
Volume Conversion Calculator
Convert volume units including liters, milliliters, gallons, pints, fluid ounces, and quarts.
Weight & Mass Conversion Calculator
Convert weight and mass units including kilograms, grams, pounds, ounces, and metric tons.
Wire Size Conversion Calculator (AWG)
Convert American Wire Gauge (AWG) sizes to diameter and cross-sectional area (inches, mm, CMA).
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