yCalculator

Area Calculator

Last updated: April 2026

Choose a shape

Select a shape to show the correct formula, inputs, and diagram.

Dimensions

lengthwidth

Area

15 cm²

A = l x w

Unit conversions

mm²

1,500

cm²

15

m²

0.0015

in²

2.325

ft²

0.0161

Step-by-step working

Formula: A = l x w

Substitution: A = 5 x 3

  1. A = l x w
  2. A = 5 x 3
  3. A = 15 cm^2

Related shapes

Want the volume of a cylinder, cone, prism, or sphere? Use the Volume Calculator when the 3D equivalent exists.

Area formulas for all shapes

Most area formulas multiply a base measurement by a height or use a radius-based formula. Regular polygons use fixed constants because every side and angle is equal.

Area vs perimeter

Area measures the space inside a 2D shape, in square units. Perimeter measures the distance around the outside edge, in ordinary length units.

Real-world area examples

Area is used for flooring, painting, garden layouts, fabric, land measurement, tiling, and estimating material costs. Always keep units consistent before applying a formula.

What does this mean?

This calculator is designed to help you understand the likely number before you make a decision or start an application.

Your result should be checked against official UK guidance, especially if your circumstances include dependants, exemptions, prior leave, or a complex immigration history.

Treat the figure as a planning tool rather than legal advice. Where the answer affects an application deadline or major payment, speak to an authorised adviser.

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