Construction Unit, Blueprint & Jobsite CAD Converters
100% in-browser engineering utilities. Convert and view CAD blueprints without AutoCAD, slice 3D STL meshes into print-ready G-code, and add fractional tape measure dimensions.
Parse and render CAD entities in your browser, calculate architectural scales (1/4" = 1'-0"), and export scaled PDF sheets.
Calculate true 3D triangle volume, filament weight in grams, print time, and download sliced G-code directly in browser.
Add, subtract, multiply, and divide fractions of an inch, calculate 16" on-center stud spacing, and view visual tape measure fractions.
Architectural Drawing Scale Reference Chart
Standard US imperial and metric architectural blueprint drawing scale conversion factors.
| Drawing Scale | Scale Factor | 1 Inch on Paper Equals | Common Drawing Application |
|---|---|---|---|
| 1/8" = 1'-0" | 1:96 | 8.0 Feet | Large Commercial Floor Plans & Site Layouts |
| 1/4" = 1'-0" (Standard) | 1:48 | 4.0 Feet | Residential Floor Plans & Exterior Elevations |
| 1/2" = 1'-0" | 1:24 | 2.0 Feet | Kitchen Cabinets & Bathroom Elevations |
| 3/4" = 1'-0" | 1:16 | 1.33 Feet | Wall Sections & Framing Details |
| 1" = 1'-0" | 1:12 | 1.0 Foot | Detailed Construction Connections & Millwork |
Frequently Asked Estimating & Technical Questions
Key formulas, building code standards, and estimating rules for this trade category.
Are my DWG, DXF, and 3D STL files uploaded to a cloud server during conversion?
No. Every CAD blueprint viewer and 3D STL slicer on Contractor Quote Studio processes files 100% locally inside your browser using JavaScript ArrayBuffers and HTML5 Canvas. Confidential client drawings and proprietary parts never leave your device.
How do you convert a 1/4 inch = 1 foot architectural scale measurement to real feet?
At a 1/4" = 1'-0" scale, every 0.25 inch on paper equals 12 inches (1 foot) on the jobsite—a 1:48 scale factor. Multiply the measured paper inches by 4 (or multiply inches by 48 for total real-world inches) to get the real-world dimension in feet.
How does the STL to G-code calculator compute exact 3D part volume and filament grams?
Our browser parser reads every triangle facet in your binary or ASCII STL file and sums the signed tetrahedron volumes using the Divergence Theorem to determine exact cubic centimeters (cm³), then applies wall shell thickness, infill %, and material density (1.24 g/cm³ for PLA).
How do you add and subtract feet, inches, and tape-measure fractions accurately?
Our fractional calculator converts whole feet and inches into decimal inches along with 1/2, 1/4, 1/8, 1/16, and 1/32 fractions, performs the exact arithmetic, and converts the result back into standard tape-measure fractions plus 16-inch on-center stud counts.