What is Calculeaf
Calculeaf is an engineering calculation worksheet. You place regions on a page —
math, text, plots, tables, pictures — and results update from top to bottom
as you type. Numbers keep their units, so 12 kN/m times a length
in metres becomes a force, not a bare number you have to track yourself.
Closer to Mathcad than to a spreadsheet
A spreadsheet hides formulas in cells. A Calculeaf worksheet shows the
expression, the units, and the result on the page, the way a calculation note
should read. You assign a name with :=, ask for a result with
=, and later regions can use that name.
That is the same idea as Mathcad or Creo’s calculation sheets: a document you
can print or share, not a grid of anonymous cells. Calculeaf also imports
Mathcad Prime .mcdx and Mathcad 15 .xmcd files when
you already have work in those formats.
Where you can run it
- Web — open calculeaf.com/app in a desktop browser. This is the full editor: ribbon, canvas, sidebars, sharing, teams, and AI.
- Desktop — a native Mac or Windows app that syncs worksheets to your account, with an optional local-only mode.
- Desktop (Local) — the same editor, stored only on your machine. Nothing is uploaded.
- Phone — a simpler list of regions at /mobile/, including an Ask AI flow with the camera.
What a worksheet contains
A worksheet is a named document with a unit system (SI, USCS, or CGS) and a stack of regions. Click empty paper once and type to add a math region. Double-click empty paper to add a text region (notes and headings). Other region types add plots, sweep tables, pictures, dropdown lists, sliders, and 2D frames. Evaluation walks the page in visual order — rows from top to bottom, then left to right — so a variable is available to everything below it.
Continue to Create an account if you want sheets to follow you, or skip ahead to Your first worksheet and try it as a guest.