Sq-Ft-Calculator

Sq Ft Calculator or Square Footage Calculator

Area: 0

Discover our Square Footage or Sq Ft Calculator, your essential tool for calculating square footage, square inches, square yards, square meters, or acres for any project—be it a home, building, garden, or construction task. Easily determine the area for landscaping, flooring, carpeting, or tiling projects to estimate material needs. Plus, calculate material costs by entering the price per square foot, square inch, square yard, or square meter.
Enter prices in the provided fields, such as:
$ Price: 4.00 per: 1 square unit: foot (ft²)
This means $4.00 per square foot.
Or:
$ Price: 30.00 per: 1000 square unit: foot (ft²)
This means $30.00 per 1000 square feet, and so on.
Input measurements in US units or metric units, including inches (in), feet (ft), yards (yd), millimeters (mm), centimeters (cm), or meters (m). Decimal values are supported. For instance, a measurement of 8’6” can be entered as 8.5 feet (6” ÷ 12” = 0.5 ft). Similarly, a measurement of 320 cm can be entered as 3.2 m.

Checkout Our Other Calculators

Basic Square Footage & Area Calculators

  1. Square Footage Calculator

  2. Room Square Foot Calculator

  3. House Square Foot Calculator

  4. Apartment Square Foot Calculator

  5. Land Square Foot Calculator

  6. Wall Square Foot Calculator

  7. Floor Square Foot Calculator

  8. Roof Square Foot Calculator

  9. Ceiling Square Foot Calculator

  10. Slab Square Foot Calculator

Construction Material Calculators (based on SQ FT)

11. Paint Calculator (by SQ FT)

12. Tile Calculator (by SQ FT)

13. Carpet Calculator (by SQ FT)

14. Laminate Flooring Calculator

15. Hardwood Flooring Calculator

16. Vinyl Flooring Calculator

17. Drywall Calculator (by SQ FT)

18. Wallpaper Calculator (by SQ FT)

19. Insulation Calculator (by SQ FT)

20. Concrete Calculator (by SQ FT)

Square Footage Calculator

Sq Ft Calculator measures the area of a two-dimensional space in square feet (sq ft), representing how many 1-foot-by-1-foot squares fit within it. It’s a standard unit in the U.S., Canada, and other regions for sizing homes, rooms, or land. The symbol for square feet is “sq ft” or “ft².” Square footage is essential for:

  • Real Estate: To assess property size for buying, selling, or renting.
  • Home Improvement: To calculate materials for flooring, painting, or tiling.
  • Construction: To estimate building costs and material needs.
    Landscaping: To determine areas for lawns, patios, or gardens.
  • Interior Design: To plan furniture layouts and optimize space.

How to Use Sq Ft Calculator?

How to Calculate Square Footage

Calculating square footage depends on the shape of the area. Below are the formulas and steps for common shapes.

1. Rectangle or Square

Formula: Area (sq ft) = Length (ft) × Width (ft)
Steps:

  1. Measure length and width in feet.
  2. Convert inches to feet (divide by 12) or meters to feet (multiply by 3.28084).
  3. Multiply length by width.

Example: A 12 ft × 10 ft room = 120 sq ft.

sq ft calculator rectangular and square image for

2. Triangle

Formula: Area (sq ft) = (Base × Height) ÷ 2
Steps:

  1. Measure the base and height in feet.
  2. Multiply base by height, then divide by 2.

Example: Aస

System: Triangle with a 8 ft base and 5 ft height
Area = (8 × 5) ÷ 2 = 20 sq ft.

triangle

3. Circle

Formula: Area (sq ft) = π × (Radius)², where π ≈ 3.14
Steps:

  1. Measure diameter, divide by 2 for radius.
  2. Square the radius, multiply by 3.14.

Example: A circle with a 6 ft diameter (3 ft radius) = 3.14 × 3² ≈ 28.26 sq ft.

circle

4. Trapezoid

Formula: Area (sq ft) = [(Base1 + Base2) ÷ 2] × Height
Steps:

  1. Measure both bases and height.
  2. Add bases, divide by 2, multiply by height.

Example: A trapezoid with bases 10 ft and 6 ft, height 4 ft = [(10 + 6) ÷ 2] × 4 = 32 sq ft.

trapezoid image for square footage calculator

5. Annulus (Ring Shape)

Formula: Area (sq ft) = π × (Outer Radius)² − π × (Inner Radius)²
Steps:

  1. Measure outer and inner diameters, divide each by 2 for radii.
  2. Calculate outer and inner areas, then subtract.

Example: Outer diameter 10 ft (radius 5 ft), inner diameter 6 ft (radius 3 ft). Area = (3.14 × 5²) − (3.14 × 3²) ≈ 50.24 sq ft.

annulus

6. Sector (Partial Circle)

Formula: Area (sq ft) = (θ ÷ 360) × π × (Radius)², where θ is the angle in degrees
Steps:

  1. Measure the radius and the central angle of the sector in degrees.
  2. Divide the angle by 360, multiply by π, and multiply by the radius squared.

Example: A sector with a 5 ft radius and 90° angle = (90 ÷ 360) × 3.14 × 5² = 0.25 × 3.14 × 25 ≈ 19.63 sq ft.

sector image for sq ft calculator

7. Parallelogram

Formula: Area (sq ft) = Base × Height
Steps:

  1. Measure the base and the perpendicular height in feet.
  2. Multiply base by height.

Example: A parallelogram with a 12 ft base and 7 ft height = 12 × 7 = 84 sq ft

parallelogram

Reference

1 acre = 43,560 square foot
1 square yard = 9 square foot
1 square meter = 10.76 square foot
1 square inch = 0.00064516 square foot

Unit Conversions

Convert measurements to feet before calculating:

  • Inches to Feet: Divide by 12 (e.g., 24 in ÷ 12 = 2 ft).
  • Yards to Feet: Multiply by 3 (e.g., 2 yd × 3 = 6 ft).
  • Centimeters to Feet: Multiply by 0.03281 (e.g., 100 cm × 0.03281 ≈ 3.281 ft).
  • Meters to Feet: Multiply by 3.28084 (e.g., 5 m × 3.28084 ≈ 16.4042 ft).
  • Square Meters to Square Feet: Multiply by 10.764 (e.g., 10 sq m × 10.764 = 107.64 sq ft).

Acres to Square Feet: Multiply by 43,560 (e.g., 0.5 acres × 43,560 = 21,780 sq ft).