Domain and Range Calculator

The domain of a function is the complete set of input values (x) for which the function is defined and produces a real output. The range is the complete set of output values (y)

The calculator uses the standard published formula for function domain. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: 1/expression: domain excludes values where expression = 0. Each step in the calculation is shown so you can verify the result manually.