An engineering calculator that shows your working
Coursework, lab reports and design projects need the working, not just the answer. Equation Pad lets students write each step like on paper, with units, and get neat calculation sheets that are easy for a tutor to follow and to mark.
Try the beta version Plans and prices
Write it like your notes
m := 1200 kg
a := 2.5 m/s^2
F := m*a = kN
W := m*g = ?2 kN
"The net force is " + F =Units are checked and converted for you, g is standard gravity (9.80665 m/s²), and ?2 shows exactly two decimal places.
Calculus, matrices and solving
Definite integrals, derivatives, sums, roots, systems of equations and differential equations; matrix inverse, determinant, eigenvalues and linear systems. See the equation solver and the matrix calculator.
Graphs for lab reports
Plot functions and measured data, several in one graph, as lines, points, bars or areas, with your own axis titles. See the graph plotter.
Neat sheets to hand in
Headings and styles that stay the same through the whole document, numbered lists, a title block with your name and module, and a PDF or .docx in one click, with the browser’s spelling check in your text.
Free while in beta
Equation Pad runs in the browser on any laptop or a Chromebook, with nothing to install. The beta is free to use; see the plans for after launch.
Questions
Is Equation Pad free for students?
The beta version is free to use now. Plans after launch are on the pricing page.
Does it work on a Chromebook?
Yes. It runs in Chrome, Edge, Firefox or Safari on Windows, Mac, Linux and ChromeOS, with nothing to install.
Can I export my work as a PDF?
Yes. File ▸ Export ▸ PDF makes a PDF at true paper size; a .docx document is also possible.
Also used for
- Structural calculations
- Worked examples
- Calculation sheets
- Report generator
- Online calculation pad
- Unit calculator
- Matrix calculator
- Equation solver
- Graph plotter
- Spreadsheet with units
- Beam deflection
- Section properties
- Euler buckling
- Truss analysis
- Stiffness matrix method
- Natural frequency
- Principal stresses
- Pipe flow head loss
- Heat transfer, U-value
- Cable sag and tension
- Civil and mechanical
- Private and local
- .eqnpad files
Equation Pad runs in your browser, with nothing to install, and we never see or store your calculations. Results must be checked by a competent person before they are relied on; see the disclaimer.