AreaTrace: Area & Perimeter

AreaTrace calculates the area and perimeter of 39 geometric shapes instantly. Pick a shape, type the measurements and the result appears as you type, with a diagram showing what each measurement is and the formula used. SHAPES • Quadrilaterals: square, rectangle, parallelogram, rhombus, trapezoid (general, isosceles and right), kite and irregular quadrilateral from 4 sides and a diagonal, handy for land plots • Triangles: by base and height, by 3 sides, by 2 sides and an angle, right, isosceles and equilateral • Circles and curves: circle, semicircle, circular sector, circular segment, annulus, annulus sector, ellipse, stadium and parabolic segment • Regular polygons: from pentagon to dodecagon, n-sided polygon and star • Composite shapes: L, T, U, cross, rounded rectangle and arched rectangle MADE FOR EVERYDAY USE • Instant results: the area shows up as soon as the measurements it needs are filled in • Labelled diagram that highlights the field you are typing in • Area and perimeter formulas for every shape, great for studying and double-checking • Units: mm, cm, m, km, inches and feet • Adjustable decimal places, from 0 to 6 • Search by name and filter by category • Copy the result with one tap • Light and dark themes • Calculations work offline, no sign-up • Available in English, Portuguese and Spanish WHO IT IS FOR Students, teachers, engineers, architects, builders, carpenters, painters and anyone who needs to measure a room, a plot, a part, or solve a geometry exercise. ADS AND PREMIUM The app is free and supported by ads. You can go ad-free for 1 hour by watching a video (each video adds 1 more hour) or remove ads forever with the one-time Premium purchase. Results depend on the accuracy of the measurements you enter. For engineering or construction decisions, confirm with a professional.