• Home
  • Electronics calculators
Find the right tool faster

Electronics Calculators Hub

Precise online tools for engineers, students, and hobbyists. Simplify your design process with instant calculations for circuits, filters, and components.

Stop doing manual math or fighting excel sheets. From basic Ohm's Law to complex Impedance analysis, select the right tool below and get results immediately.

22

calculators available

5

main categories

IPC

practical, engineering-focused tools

Browse by category

Use the groups below to jump directly to the calculators that match what you are working on.

Basic Circuits 9 Filters & Impedance 5 OP AMPs 3 Regulators & Control 3 PCB Layout 2

Calculator group

Basic Circuits

9 calculators

Ohm's Law diagram
Ohm's Law Calculator

Calculate voltage, current, resistance, and power using Ohm's law.

Voltage divider circuit diagram
Voltage Divider Calculator

Compute the output voltage of a resistor voltage divider.

Decibel conversion chart
Decibels & Unit Converter

Convert between dB, power ratios, and voltage ratios with ease.

Resistor combination diagram
Equivalent Resistance Calculator

Calculate equivalent resistance for series, parallel, and a simple mixed resistor topology.

LED circuit diagram
LED Calculator

Determine the correct resistor value for safely powering an LED.

Resistor color code chart
Resistor Color Code Calculator & Chart

Decode 4, 5, and 6-band resistor color codes with an interactive calculator and reference chart.

SMD resistor code calculator with examples for 3-digit, 4-digit, and EIA-96 markings
SMD Resistor Code Calculator

Decode 3-digit, 4-digit, and EIA-96 SMD resistor markings into resistance values.

Timer 555 circuit diagram
Timer 555 Calculator

Calculate times, duty cycle, and frequency for 555 timer circuits.

Common-emitter transistor calculator graph
Common-Emitter NPN Transistor Calculator

Explore load lines, Q-points, and transistor regions in a common-emitter NPN stage.

Calculator group

Filters & Impedance

5 calculators

Capacitor impedance frequency plot
Capacitor Impedance Plot Calculator

Plot capacitor impedance versus frequency including ESR, ESL, and resonance.

Low-pass filter graph
Low-Pass Filter Calculator

Design RC low-pass filters and visualize their frequency response.

Capacitor symbol
Capacitor Impedance Calculator

Calculate the impedance of a capacitor at a given frequency.

Inductor symbol
Inductor Impedance Calculator

Calculate the impedance of an inductor at a given frequency.

RC circuit diagram
RC Circuit Time Constant Calculator

Find tau, 5τ, and charging or discharging curves for RC circuits.

Calculator group

OP AMPs

3 calculators

Inverting Schmitt trigger comparator schematic
Schmitt Trigger Calculator

Calculate comparator hysteresis thresholds and visualize how positive feedback prevents output chatter.

Non-inverting OP AMP circuit
Non-Inverting OP AMP Gain Calculator

Compute gain and resistor values for non-inverting OP AMP circuits.

Inverting OP AMP circuit
Inverting OP AMP Gain Calculator

Calculate gain and resistor ratios for inverting OP AMP configurations.

Calculator group

Regulators & Control

3 calculators

LM317/LM1117/AMS1117 regulator schematic
Adjustable Voltage Regulator Calculator

Design adjustable voltage regulators with LM317, LM1117, and AMS1117.

Loop compensation block diagram
Control Loop Compensator Calculator

Analyze and design loop compensators for control systems.

DC/DC converter loop stability Bode plot
DC/DC Loop Stability Calculator

Plot compensator and complete loop gain for VM or PCM buck, boost, forward, flyback, half-bridge, full-bridge, and push-pull converters in CCM or DCM.

Calculator group

PCB Layout

2 calculators

PCB Trace Width Calculator
IPC-2221 PCB Trace Width Calculator

Calculate required PCB trace width, voltage drop, and power loss using IPC-2221 standard.

PCB Via Current Calculator
PCB Via Current Calculator

Calculate the current carrying capacity of a PCB via based on IPC-2221 standards.