Scale Conversion Calculator
MathConvert between real size and scale size with different ratios and units. Perfect for architects, engineers, and model makers.
Scale Conversion
📐 About Scale Conversion
Scale Ratio: A scale ratio like 1:50 means that 1 unit on the drawing represents 50 units in real life.
Architecture: Common scales include 1:100 (floor plans), 1:50 (detailed plans), 1:20 (construction details).
Engineering: Typical scales are 1:200, 1:500 for site plans, and 1:1 to 1:10 for detail drawings.
Model Making: Popular scales include 1:24, 1:32, 1:48, 1:72 for various model types.
❓ How to Use
• Enter any two values to automatically calculate the third
• Choose from 8 different units (metric and imperial)
• Click preset scales for common architectural ratios
• Results update instantly as you type
• Use "Clear All" to start fresh
🎯 Applications
Architecture: Floor plans, elevations, site plans, construction details
Engineering: Technical drawings, mechanical parts, schematics
Model Making: Scale models, miniatures, dollhouses
Design: Product design, furniture design, landscape architecture
Education: Teaching proportions, ratios, and spatial relationships
💡 Examples
Example 1: A 5m wall at 1:100 scale = 5cm on paper
Example 2: A 2cm drawing at 1:50 scale = 1m in reality
Example 3: 10mm model car represents 240mm real car (1:24 scale)