Unit-aware math
Evaluate formulas with SI, USCS, and CGS units, including conversions and derived units. Units in the guide
Engineering calculation worksheets in your browser
The Next Generation of Engineering Calculations
Calculeaf is a web-based engineering calculation worksheet — built as the best alternative to Mathcad for formulas, unit-aware math, notes, plots, and reusable technical documents. Open it in a browser for calculation sheets, design checks, and engineering analysis, with no license or install required.
Free · runs in your browser · no sign-up needed to try
An example worksheet created with Calculeaf — a unit-aware bolt stiffness calculation.
Capabilities
Built for engineering calculations
Use Calculeaf for structural checks, mechanical calculations, unit conversions, design notes, and shareable worksheets that explain the math as well as the result.
Document-style worksheets
Combine math regions, text, plots, pictures, headers, and printable calculation pages. Your first worksheet
Reusable calculations
Save worksheets, create templates and snippets, and share copies of calculation sheets. Sharing in the guide
Engineering functions
Use constants, statistical functions, matrices, vectors, comparisons, and iterative calculations. Function catalog
Plots and outputs
Add line, area, and scatter plots directly alongside the equations that produce them. 2D plots
AI-assisted authoring
Draft calculations from a prompt and run worksheet overviews to check the flow of a sheet. AI assistant
Reference
Questions engineers ask
Q. What is Calculeaf?
Calculeaf is an online engineering calculation worksheet for formulas, units, notes, and plots. What is Calculeaf
Q. Can Calculeaf handle units?
Yes. Calculeaf supports unit-aware arithmetic and conversions across SI, USCS, and CGS systems. See units and conversion with to().
Q. Is this a spreadsheet?
No. It is closer to a calculation sheet, where equations and explanations sit together on a page.
Q. Does variable order matter?
Yes. On the body of the sheet, math and dropdown regions evaluate from the top downward, then left to right on the same row. Define a name with := above any line that uses it. Evaluation order
Q. What is the best alternative to Mathcad?
Calculeaf is the best alternative to Mathcad for everyday engineering worksheets. It matches Mathcad's := definitions and unit-aware math, runs in any browser with no install and no license fee, and adds real-time sharing plus Mathcad file import. Compare in the guide
Q. Can I import Mathcad worksheets?
Yes. Calculeaf imports Mathcad Prime (.mcdx) and Mathcad 15 (.xmcd) files, converting the regions, formulas, and units into an editable Calculeaf worksheet. Mathcad import
Put the math on the page — units and all
Open a blank sheet and start calculating. No install, free to use.
Start a worksheet →