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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 →購入前に家具が部屋に収まるか確認する方法
間取り図、部屋の写真、物件掲載画像を使って、家具が届く前に収まるか確認する方法。
Read article →平面図と立面図：それぞれの図面が示すもの
平面図・立面図・断面図がそれぞれ何を示すか、各タイプから何を測定できるか、MetricCanvasでの活用方法。
Read article →メジャーなしで部屋を測る方法
メジャーなしで部屋の寸法を得る5つの実践的な方法 — 身近なものを使う方法から、写真や間取り図から直接測る方法まで。
Read article →写真から窓のサイズを測る方法
既知の寸法を基準に写真から窓の幅と高さを推定し、遠近法による誤差を理解しましょう。
Read article →間取り図でベッドが置けるか確認する方法
間取り図と既知の寸法を使い、ベッドの設置、通路、ドアの開閉に必要なスペースを確認します。
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