Tools

Calculators that go beyond a single formula. Free to use, with the working shown.

Dimension solver

Enter the dimensions of your variables and get the independent dimensionless groups (Buckingham π), with your choice of repeating variables, or the powers that give a target dimension. Exact fractions, checked.

Open the solver Scale-model testing

Model test planner

See the model speed needed to match Reynolds, Froude or Mach number, how far the other numbers are off, and the force scale between model and prototype.

Open the planner