FeaturedArea Calculation: All Formulas at a Glance
Complete guide to area calculation — rectangle, circle, triangle, trapezoid and more with formulas, examples and tips.
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FeaturedComplete guide to area calculation — rectangle, circle, triangle, trapezoid and more with formulas, examples and tips.

How to calculate the square meters of a room or apartment — with tips for sloped ceilings and irregular floor plans.

Calculate circle area with πr² — explained step by step with practical applications from everyday life and engineering.

Calculate triangle area using base × height, Heron's formula, cross product and trigonometry — when to use which method?

Calculate living space per the German WoFlV regulation — with rules for sloped ceilings, balconies and terraces.

Calculate irregular plot areas — using triangle decomposition, the Shoelace formula and GPS methods.
Proportional, inverse and compound rule of three with step-by-step solution
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