Calculators

Number-crunching for electronics, construction, climate, and everyday math. Runs locally, in your browser.

Electronics

Resistor Color Lab

LED Resistor

Capacitor by Ripple

Power & Thermal

Consumption & Runtime

ADC Divider (ESP32)

RC Filter

RL Filter

RCL Series

Amplifier Gain (Non-inverting)

I2S Clocks (ESP32 / DAC)

Ohm's Law

Construction

Paint

Climate

Cooling (BTU)

Everyday

Rule of three

Resistor Color Lab

Nominal value2.20 kΩ±5% · Tolerance range: 2.09 kΩ - 2.31 kΩ

Target value (Ω)

Band 1

Red (2)

Band 2

Red (2)

Multiplier

Red (x100)

Tolerance

Gold (±5%)

Package Type

Through-Hole · Axial 1/4W (Carbon Film)

Wattage