1:100 Scale Calculator

1:100 is a standard architectural scale for whole-building plans and massing models. At 1:100, 1 cm on the drawing equals 1 metre in reality — a very intuitive relationship.

Scale Converter

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What fits at 1:100

Building floor plans, site plans, massing models and presentation drawings.

Real subject	Real size	1:100 model
Two-storey house (height)	8 m	8 cm
Room wall	4 m	4 cm
Tennis court (length)	23.77 m	23.8 cm
Person	1.8 m	1.8 cm

Frequently asked questions

Why is 1:100 popular in architecture?

Because the maths is effortless: 1 cm equals 1 m, so plans are quick to read and draw.

Related scales

→ See all scales