Math Calculators
Free calculators for exact age between dates and the square footage of rooms and houses, with step-by-step methods.
Two everyday measurement problems, done exactly. One is about time: how old someone is, to the day, between any two dates. The other is about area: how much floor, paint or material a space actually needs. Both pages show the method step by step so you can reproduce the answer with a pencil.
🎂 Age CalculatorExact age in years, months and days from a date of birth, or the age on any chosen past or future date.
📐 Square Footage CalculatorRooms and whole houses, including L-shaped, triangular and circular spaces, with a multi-room builder and cost estimator.
Which tool do I need?
Age Calculator. for forms, eligibility cut-offs and milestones where an exact age in years, months and days matters.
Square Footage Calculator. to measure a room or home for flooring, paint or materials, including what to include and exclude in a house measurement.
If your measurement is lumber rather than floor area, the Board Feet Calculator in Other Calculators is the companion tool.