Knowledge base
Articles & Guides
Practical guides on image measurement, floor plan reading, and getting accurate real-world dimensions from photographs and technical drawings.
How to Calibrate the Scale of an Image to Measure It
Learn what image scale calibration is, why every measurement depends on it, and how to set it in MetricCanvas with a line or a circle diameter.
Read article →How to Measure Distances on an Image Online
Use the MetricCanvas measure tool to draw lines on a photo or plan, read real lengths, keep exact angles and label each measurement.
Read article →How to Measure the Diameter or Radius of a Circle on an Image
Use the circle tool to measure round objects on photos and plans — tables, pipes, columns, tanks or roundabouts — by diameter or by radius.
Read article →MetricCanvas Navigation and Keyboard Shortcuts
Every way to move around the infinite canvas: trackpad, Magic Mouse, mouse wheel, touch and keyboard shortcuts for zoom, pan and drawing.
Read article →How to Upload Plans and Photos and Work with Layers
Drag and drop images anywhere, compare several plans on one canvas, reorder layers and keep your work saved automatically in the browser.
Read article →How to Export Your Measurements as PNG, CSV or Text
Share measured plans as images, open your measurements in Excel or Google Sheets, or paste a quick text summary into an email.
Read article →How to Verify Room Sizes from a Real Estate Floor Plan
Stated floor plan dimensions are often rounded, approximated, or simply wrong. Here's how to verify actual room sizes from a digital floor plan before signing anything.
Read article →How to Measure Distances in Satellite and Aerial Images
Satellite and aerial photographs contain measurable distances — if you know how to calibrate them. A guide to extracting real-world measurements from overhead imagery.
Read article →How to Measure from a Blueprint Without CAD Software
You don't need AutoCAD or Revit to extract dimensions from a blueprint. A practical guide to getting accurate measurements from a scanned or photographed architectural drawing.
Read article →How to Read a Scale Bar in Technical Drawings
A scale bar tells you exactly how to convert measurements on paper into real-world distances. Here's how to read one, use one, and what to do when you only have a digital copy.
Read article →Com saber si un moble cabrà a la teva habitació abans de comprar-lo
Com verificar que un moble cap abans de comprar-lo, usant plànols, fotos de l'habitació o imatges d'anuncis immobiliaris.
Read article →Diferències entre plànol de planta i alçat
Què mostren els plànols de planta, alçats i seccions, què pots mesurar de cadascun i com usar MetricCanvas amb els tres.
Read article →Com mesurar una habitació sense metre
5 mètodes pràctics per obtenir dimensions d'una habitació sense metre, des d'objectes quotidians fins a mesurar des d'una foto o plànol.
Read article →Com mesurar una finestra a partir d’una foto
Mesura l’amplada i l’alçada d’una finestra en una foto amb una referència coneguda i tenint en compte els límits de perspectiva.
Read article →Comprovar si un llit cap en un plànol
Fes servir un plànol i una mida coneguda per saber si hi cap un llit i comprovar el pas i l’obertura de la porta.
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