Calculeaf Features Blog Guide Pricing Open app

Evaluation order

Calculeaf user guide · Updated 2026-08-16

Variables exist for everything after them in evaluation order. Order is visual, not the order you inserted the regions, and not a hidden dependency graph.

A worksheet with inputs defined above the reaction formula that uses those inputs.
w and L are above R. Evaluate All walks the page in that reading order, so R can use both names.

How order is decided

  1. Only body regions that define or consume values take part: math, lists, sliders, and 2D frames. Header and footer bands are skipped.
  2. Calculeaf groups regions that sit on the same visual row — their vertical ranges overlap enough, and they are not too far apart horizontally.
  3. Rows run top to bottom.
  4. Inside a row, regions run left to right.

That matches how you read a calculation note. Two assignments on one line evaluate left first, even if the right-hand block’s box is a few pixels higher because the math rendered taller.

Evaluate All

Typing updates the region you are in. To refresh the whole chain — after a paste, a unit-system change, or a list selection — use Evaluate on the Home tab (tooltip: Evaluate All) or Ctrl+Enter .

Lists and sliders inject their current values at their place in this order. A 2D frame injects its result names when it sits in the sequence. Names defined with := follow variables and scope.