Design Tools

Look up wire diameter, cross-sectionalarea, and resistance

Calculate the time constant, charging,and discharging time of an RC circuit.

Easily estimate your coil's physical properties with our online calculator. Calculate wire length, total resistance, winding turns, and coil dimensions instantly. Perfect for inductor and electromagnet design.

Quickly calculate the total resistance of two or more parallel resistors

Calculate parallel plate capacitor capacitance quickly. Input plate area, distance, and dielectric constant (εr) to get accurate results in pF. Essential for PCB design and circuit analysis.

Calculate the output voltage of a resistivevoltage divider circuit.

Equivalent conversion calculation forseries and parallel impedances.

Calculate the required series protective resistor value to drive an LED.

Easily determine bias and feedback resistors for inverting operational amplifier circuits. Calculate R2, R3, and R4 based on gain, Vout, and input voltage offsets.

Calculate feedback and bias resistors for non-inverting operational amplifier circuits. Easily determine R2, R3, and R4 for your circuit design needs.

Calculate skin depth for copper, aluminum, silver, gold, and other conductors across different frequencies. Useful for RF design, PCB traces, transformers, AC resistance, and EMI analysis.

Calculate R1, R2, and output voltage for adjustable voltage regulators, LM317 circuits, LDOs, and DC-DC feedback dividers with Vref and adjust current support.

Calculation of key parameters for SMPS(e.g.,Buck/Boost) topologies.

Calculate air core coil inductance from coil diameter, length, and turns. Useful for RF coils, filters, antennas, oscillators, resonant circuits, and inductor design.

Calculate LC resonant frequency, inductance, or capacitance for tank circuits, RF filters, oscillators, antenna tuning, and frequency-selective circuit design.

Estimate battery charging time from capacity, charging current, charging efficiency, and charging profile factor. Calculate charge time in hours and minutes, effective charging current, C-rate, and refill capacity for rechargeable batteries.

Estimate battery life from capacity, load current, usable capacity, and voltage. Calculate runtime in hours and days, usable mAh, energy in Wh, and average power for battery-powered devices.

Convert MLCC case sizes between imperial EIA codes and metric codes. Quickly find equivalent package codes, nominal dimensions, and popular MLCC sizes for PCB design.

Calculate required decoupling capacitance, target impedance, effective MLCC count, total capacitance, and parallel ESR for IC power rail and PDN design.

Convert MLCC and SMD capacitor codes to capacitance values and vice versa, including 3-digit, 4-digit, R decimal, and tolerance codes.

Calculate the power dissipation of MLCCs based on RMS current and ESR, including duty cycle for pulsed or switching applications.

Calculate MLCC self-resonant frequency from capacitance and ESL, with reactance and minimum impedance estimates for decoupling and RF design.

Calculate the capacitive reactance (Xc) of MLCCs at specified frequencies for RF, filter, and decoupling applications.

Calculate the maximum safe DC voltage for MLCCs to maintain capacitance and avoid breakdown, considering dielectric type and target capacitance.

Calculate the effective capacitance of MLCCs under applied DC voltage, considering DC bias effect for accurate circuit design.

Calculate MOSFET and IGBT gate drive current, gate resistor, gate drive power, and switching time from gate charge, drive voltage, and switching frequency.

Calculate semiconductor power dissipation, temperature rise, junction temperature, thermal margin, and required thermal resistance for SCRs, MOSFETs, IGBTs, diodes, and regulators.

Calculate SCR gate trigger current, pulse width, and gate resistor for reliable SCR switching in power electronics applications.

Calculate required LDO thermal resistance, junction temperature, thermal margin, and allowed temperature rise from power dissipation and ambient conditions.

Calculate adjustable LDO output voltage or required feedback resistor values from Vref, R1, R2, and target output voltage.

Calculate LDO minimum input voltage, dropout headroom, and safety margin from output voltage, dropout voltage, and available input voltage.

Calculate LDO efficiency, input power, output power, voltage drop, and power loss from Vin, Vout, load current, and quiescent current.

Calculate LDO junction temperature, temperature rise, thermal margin, and maximum allowed power from power dissipation, ambient temperature, and θJA.

Calculate LDO power dissipation, efficiency, temperature rise, and junction temperature from Vin, Vout, load current, quiescent current, and thermal resistance.

Calculate buck converter duty cycle, inductor value, ripple current, output capacitor, input current, and power for step-down DC-DC regulator design.

Calculate full-wave, half-wave, quarter-wave, and eighth-wave antenna lengths from frequency with velocity factor adjustment for RF, dipole, monopole, and amateur radio antenna design.

Convert dBm to watts, milliwatts, and microwatts or convert power back to dBm. Useful for RF power, antennas, transmitters, receivers, and link budgets.

Instantly decode resistor color bands and SMD codes (3-digit and 4-digit). A must-have tool for electronics students and PCB designers for quick component identification.

Easily calculate the cutoff frequency for RC low-pass filters. Input your resistor and capacitor values for instant results. Perfect for electronics students and hobbyists.

Calculate microstrip line characteristic impedance (Z0) for high-speed PCB design. Accurate tool for trace width, dielectric height, and dielectric constant analysis. Essential for signal integrity engineers.

Use our professional IPC-2221 based PCB trace width calculator to determine the safe copper width for your electrical currents. Supports 1oz/2oz copper and internal/external layers.

Easily calculate R1, R2, and C values for your 555 timer circuits. Supports both Astable (oscillator) and Monostable (one-shot) modes with instant results. Ideal for electronics hobbyists and engineers.

Find coin and button cell battery equivalents by model number, voltage, chemistry, and size. Search common CR, BR, LR, AG, SR, 377, 364, 395, LR44, AG13, and SR626SW battery replacements in one reference tool.

A simple and accurate online tool to instantly convert temperatures between Celsius and Fahrenheit.