Area Calculator - Calculate Area of Any Shape with Unit Conversion 2025

Select Shape

Measurement Units

Input Unit

Output Unit

Enter Dimensions

Length (m)

Width (m)

10 m

8 m

Rectangle

Cost Calculator (Optional)

Price per m² (₹)

Area

m²

Perimeter

36.00 m

Formula Used

Area = Length × Width

Area = 10 × 8 = 80.00 m²

Quick Conversions

Square Feet

861 sq ft

Square Meters

80.00 m²

Square Yards / Gaj

95.68 sq yd

Acres

0.0198

What is an Area Calculator?

An Area Calculator is a versatile tool that helps you calculate the area of various geometric shapes and convert between different units of measurement. This calculator supports:

7 Geometric Shapes: Rectangle, Square, Circle, Triangle, Trapezoid, Ellipse, and Parallelogram
Room/House Mode: Add multiple rooms to calculate total floor area
12 Output Units: Including Indian units like Gaj, Marla, and Bigha
Cost Estimation: Calculate flooring, tiling, or painting costs based on area
Quick Conversions: Instantly see area in sq ft, sq m, sq yd, and acres

How to Use This Calculator

Select a Shape

Choose from Rectangle, Square, Circle, Triangle, Trapezoid, Ellipse, Parallelogram, or Room mode.

Choose Units

Select your input unit (meters, feet, etc.) and desired output unit.

Enter Dimensions

Input the required measurements (length, width, radius, etc.).

View Results

See calculated area, formula used, and quick conversions. Add price for cost estimation.

Area Formulas Reference

Shape	Formula	Variables
Rectangle	A = l × w	l = length, w = width
Square	A = s²	s = side length
Circle	A = π × r²	r = radius, π ≈ 3.14159
Triangle	A = ½ × b × h	b = base, h = height
Trapezoid	A = ½ × (a + b) × h	a, b = parallel sides, h = height
Ellipse	A = π × a × b	a = semi-major, b = semi-minor
Parallelogram	A = b × h	b = base, h = height

Area Unit Conversions

Square Feet to Square Meters

1 sq ft = 0.0929 sq m

1 sq m = 10.764 sq ft

Acres & Hectares

1 acre = 0.4047 hectares

1 hectare = 2.471 acres

Indian Units

1 Gaj = 1 sq yard = 0.836 sq m

1 Marla ≈ 25.29 sq m

Bigha (Varies by Region)

1 Bigha (UP/Bihar) ≈ 2529 sq m

1 Bigha (Gujarat) ≈ 1936 sq m

Square Yards

1 sq yard = 9 sq feet

1 sq yard = 0.836 sq m

Acres in Sq Feet

1 acre = 43,560 sq feet

1 acre = 4,047 sq meters

Frequently Asked Questions

How do I calculate the area of an irregularly shaped room?

For irregular shapes, divide the room into regular shapes (rectangles, triangles, etc.), calculate each area separately, then add them together. Our Room/House mode lets you add multiple rectangular rooms. For L-shaped rooms, add two rectangles. For rooms with cut corners, calculate the full rectangle and subtract the corner area.

What's the difference between Gaj, Marla, and Bigha?

Gaj is equal to 1 square yard (9 sq ft). Marla equals approximately 272.25 sq ft or about 9 sq yards (though it varies by region). Bigha is a larger unit used for agricultural land and varies significantly by state — from about 1,500 sq m in Bengal to 2,500+ sq m in UP/Bihar. Always confirm local definitions when dealing with land transactions.

How do I convert square feet to square meters?

Multiply square feet by 0.0929 to get square meters. For example, 1000 sq ft × 0.0929 = 92.9 sq m. Conversely, multiply square meters by 10.764 to get square feet. Our calculator does this automatically — just select your input and output units.

How much flooring do I need for my room?

Calculate your room area using this calculator, then add 5-10% extra for cutting waste and future repairs. For example, if your room is 150 sq ft, order 165-165 sq ft of flooring material. Use the cost calculator feature to estimate total flooring expenses.

What's the carpet area vs built-up area of a flat?

Carpet area is the actual usable floor space (what you can put carpet on). Built-up area includes carpet area plus wall thicknesses and balconies. Super built-up area adds common areas like lobbies and stairs. Typically: Carpet Area × 1.15-1.25 = Built-up Area × 1.25-1.35 = Super Built-up Area.

How many tiles do I need for a room?

First, calculate room area in sq ft. Then divide by the tile area. For example, for a 100 sq ft room using 2×2 ft tiles (4 sq ft each): 100 ÷ 4 = 25 tiles. Add 10% for wastage = 28 tiles. Use our calculator to find the room area and cost calculator to estimate total tile cost.

How accurate is this area calculator?

This calculator uses standard mathematical formulas and is highly accurate for the precision of your input measurements. For real-world applications (construction, flooring, etc.), accuracy depends on how precisely you measure the dimensions. We recommend measuring multiple times and using the average for best results.

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