Engineering Tools & Calculators

This tool is used to decode information for color banded axial lead resistors. Select the number of bands, then their colors to determine the value and tolerance of the resistors.

Calculate the total series and parallel resistance of a circuit using the Parallel and Series Resistor calculator.

This temperature calculator converts Celsius values to Fahrenheit values and Fahrenheit values to Celsius values.

Use this tool to calculate relationships between current, voltage, resistance, and power in resistive circuits.

The Battery life calculator uses battery capacity (mAh) and device consumption (mA) to calculate estimated hours of battery life.

This length conversion calculator converts metric and imperial units including kilometers, meters, centimeters, millimeters, miles, yards, feet, and inches.

The Attenuator Calculator is used to determine the resistance values for Tee, Bridged Tee, Reflection and Pi Attenuators given the impedance of the circuit, and the desired attenuation.

Use the capacitance conversion chart and calculator to perform conversions between code to capacitor value and capacitance units from pF, µF, nF, and F.

Given a capacitance value as well as beginning and end voltages, this calculator solves for either time or resistance.

Calculate the current going through any branch in a parallel circuit using the Current Divider calculator.

Converts RF power between decibel-milliwatts (dBm) and Watts.

Converts decimal numbers to their closest fractional value.

Converts British Thermal Units (BTU) to Joules (J) and vice versa.

Calculates equivalent values for mechanical force units like Newton, Kilonewton, and kilogram-force.

Converts frequency to wavelength and filters ITU primary allocation.

Converts inductance measurements (e.g., henry to kilohenry, microhenry to picohenry).

Helps identify the correct series resistor for an LED based on supply voltage, forward voltage, and forward current.

Calculates the -3dB cutoff frequency of RC and RL circuits for both Low and High Pass filters.

Converts Decimal to Hex, Octal, and Binary numbers, and performs binary bit shift operations.

Calculates the required trace width for a specified current.

Converts various pressure units (e.g., psi, bar, kgf/cm2, pa, mmH2O, inches H2O, psf, atmosphere).

Figures inductive and capacitive reactance and admittance.

Calculates the overall capacitance value for multiple capacitors connected either in series or in parallel.

Determines the capacitance value and tolerance of surface mount capacitors by inputting 3/4 digit or alphabetical codes (EIA or EIA-198 formats).

Determines the resistance value of surface mount resistors using markings found on the device, supporting three-digit EIA, four-digit EIA, or EIA-96 code formats.

Estimates the real, apparent, and reactive power for either delta or wye (star) configured 3-phase AC systems.

Calculates the resistor-capacitor (RC) time constant of a circuit by entering voltage, capacitance, and load resistance values.

Calculates the PCB trace impedance for microstrips and striplines, with formulas based on IPC2141, providing a baseline for circuit layout design.

Quickly determines the output voltage of a divider circuit given the input voltage and resistor values.

Converts volume and mass units, including milliliters, ounces, liters, gallons, pints, quarts, and gallons.

Converts weight units such as kilograms to grams, kilograms to pounds, tons, metric tons, and ounces.

Converts American Wire Gauge (AWG) to diameter and area values in inches, millimeters, or circular mil area (CMA).

Compare and select the best 3D printing material for your project based on properties, applications, and requirements.