Calculate interface timing: setup time, hold time, clock-to-output, margins, etc!

Calculate parallel resistances and standard resistor values.

Calculate cutoff frequency and response of a single-pole RC lowpass filter.

Resistance Calculator

Parallel Resistance

Given two resistors, calculate their parallel resistance.

R1:			?
R2:			?

Inverse Parallel Resistance

Given a resistor and a (lower) target value, calculate the parallel resistance required to hit that value.

R1:			?
Target:			?

Standard Values

Given a resistance and tolerance, calculate the nearest standard values.

R:			?