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Tools for modellers

Convert dimensions, change your model's scale and plan movement on your layout. Free calculators for everyone, with no login required.

Choose a calculator to start calculating.

Dimension converter

Convert a real dimension to model scale or recover its full-size dimension. Choose input and output units.

10 m at H0 (1:87) = 114.94253 mm Open calculator

Scale conversion in %

Convert an existing model, plan or STL file from one scale to another. Find the size percentage to use when reducing or enlarging it.

H0 (1:87) → TT (1:120) = 72.5% Open calculator

Scale comparison

Compare the same object in different scales. Choose your scale and see how much space it needs on your layout.

10 m: H0 = 114.94 mm · N = 62.5 mm Open calculator

Speed calculator

Convert real km/h to model mm/s or vice versa, and find the travel time over a test distance.

60 km/h at H0 = 191.57088 mm/s Open calculator

Incline calculator

Plan ramp geometry. Use rise and horizontal run to calculate grade, angle and ramp length.

50 mm over 2000 mm = 2.5% Open calculator

System architecture

Enlarged view. On a small screen, scroll the diagram horizontally.

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