This project scaler resizes a set of dimensions up or down by a factor, either uniformly (everything in proportion) or independently per axis, and can scale from a known 'before and after' pair. It is the fast way to adapt a plan to a new size without redrawing every measurement.
Scaling in proportion
Uniform scaling multiplies every dimension by the same factor, so the shape and all its proportions stay the same — a half-size model, a bench built 20% larger, a pattern resized to fit. You can give the factor directly, or give one original dimension and its new value and let the calculator derive the factor, then apply it to the whole list of measurements.
Beware what scaling does to area and volume: doubling every length multiplies surface area by four and volume (and weight, and material) by eight. So a scaled-up project needs far more material than the length factor alone suggests, which the scaler makes obvious by showing the knock-on effects.
Non-uniform and practical limits
Sometimes you scale one axis differently — making a cabinet taller but not wider. The calculator supports independent factors per dimension for that. Either way, remember that some elements do not scale linearly: material thickness, hardware, and joinery often stay the same regardless of overall size, so review the scaled output against what is actually available and sensible.
A plan is drawn for a 1200 mm bench but you want it 1500 mm long, scaled in proportion.
- Scale factor = new ÷ old = 1500 ÷ 1200 = 1.25.
- Multiply every dimension by 1.25 (a 900 mm height becomes 1125 mm).
- Material/area scales with 1.25² ≈ 1.56× — over half as much again.
A 1.25 factor resizes the whole bench — but plan for about 1.56× the material.
