Construction
Square Footage Cost Calculator
Cost of a square area from side length and cost per ft².
Free to use — no sign-up or login.
Area
ft²
Total cost
Amortization schedule
| # | Date | Payment | Principal | Extra | Interest | Balance |
|---|---|---|---|---|---|---|
Square area is the side squared. A 20 ft side is 400.00 ft², and at $5.00 per ft² the cost is $2,000.00.
A rectangle needs two edges. Use the rectangle footage cost calculator.
Area first, then price
A 20 ft side is 400.00 ft². Multiplying by $5.00 per ft² gives $2,000.00, shown in dollars and cents.
Unit price only
If the area is already measured, use the footage cost page and skip the side length. This page only squares one side.
Worked example: square footage cost
Area 400.00 ft² at $5.00/ft² costs $2000.00.
\[ A = 20^{2} \]
Frequently asked questions
What does the Square Footage Cost – Side Squared measure?
Area 400.00 ft² at $5.00/ft² costs $2000.00.
How many decimal places does Square Footage Cost – Side Squared show?
Area 400.00 ft² at $5.00/ft² costs $2000.00. Lengths, areas, volumes, and money use two decimals. Purchase counts are whole numbers.
Does Square Footage Cost – Side Squared include waste?
A square does not add a waste percent. Enter the side you will actually cover.
Can Square Footage Cost – Side Squared mix units?
No. Square Footage Cost – Side Squared expects every input in the unit printed on its label.
Is Square Footage Cost – Side Squared a code or structural check?
No. Square Footage Cost – Side Squared is a quantity estimate. Local rules and site conditions stay outside the formula.
References
Assumptions and limitations
Square cost is side squared times the unit price. Offcuts and openings are left out.