Resistor

• ToolsResistors 2 Oct 2026 Resistor colour code calculator: enter a value in ohms to see its colour bands, with an explanation of how to read resistors with 4 and 5 bands.
• ToolsResistors in series 2 Oct 2026 Resistors in series calculator: enter the resistor values to get the total resistance when they are connected one after another.
• ToolsResistors in parallel 2 Oct 2026 Resistors in parallel calculator: enter the resistor values to get the total resistance when they are connected side by side.
• ToolsResistor for an LED 7 Oct 2026 Calculator for the resistor that limits the current through an LED