Convert acres to square feet instantly. Enter a size in acres and see it in square feet, square yards, and square meters — using the exact conversion (1 acre = 43,560 sq ft).
Uses the exact survey conversion: 1 acre = 43,560 square feet.
One acre is exactly 43,560 square feet, so multiply acres by 43,560. For example, 0.5 acres is 0.5 × 43,560 = 21,780 square feet.
Square feet = acres × 43,560
Exactly 43,560 square feet. Half an acre is 21,780 sq ft and a quarter-acre is 10,890 sq ft.
87,120 square feet (2 × 43,560).
Related: square feet to acres · square feet to square meters · price per square foot.
Yes. The Acres to Square Feet Calculator is completely free, runs in your browser, and never asks for a signup, email, or download. Enter your numbers and the result updates instantly.
It uses standard formulas and recalculates the moment you change a value, so the math is exact for the inputs you enter. Treat the result as a reliable planning estimate; for decisions with legal or tax consequences, confirm the figures with a qualified professional.
Yes. The calculator is mobile-friendly and works on any phone, tablet, or computer — there is no app to install and nothing to save.
Yes. Scroll to “Add this free calculator to your site” above and copy the embed snippet to place the live calculator on your blog or website for free.
Last reviewed: September 2026. Free to use, no signup — Acres to Square Feet Calculator by ToolWise Digital.
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