Finds the closest parallel combination of two standard resistors.
In series, total resistance is the sum of all resistors. In parallel, the reciprocal of total resistance equals the sum of reciprocals. This tool supports smart unit input (e.g., 10k, 1M) and can find the closest standard resistor combination for a target value.
1/R_total = 1/R1 + 1/R2 + ... + 1/Rn. The total is always less than the smallest resistor.
E12, E24, etc. define standard resistor values based on tolerance. E24 has 24 values per decade (5% tolerance).
Yes, the calculator supports k (kilo), M (mega), and R (ohms).