Question: are all faucet aerators the same size?
Answer: Size: Aerators typically come in one of two sizes: regular (usually 15/16” Male or 55/64” Female) and junior (usually 13/16” M or 3/4” F). ... If your faucet is roughly the size of a nickel, it needs a regular-size aerator. If your faucet is roughly the size of a dime, it will use a junior-size aerator.