Convert drawing and real-world lengths with an explicit drawing:real ratio and compatible units.
Your inputs stay on your device. All calculations run in your browser without uploading, storing or tracking the numbers you enter. Clear formulas and visible assumptions let you review the estimate.
Drawing → real multiplies by right/left. Real → drawing multiplies by left/right. Source and target units are converted separately.
Ratio sides are dimensionless and positive. This models linear lengths, not area or volume. Exact inch = 0.0254 m and foot = 0.3048 m conversions are used.
Decimal arithmetic uses exact fractions. Currency displays round to two decimals; exact unrounded values are included where relevant. Date calculations use whole Gregorian calendar days. Results are estimates under the stated assumptions.
No. Inputs are processed locally and not persisted. Only the theme preference is stored. Copy and report downloads happen when you choose them.
