ExceLab Calculus Add-in Powerhouse
Solve advanced calculus—right inside Excel and Google Sheets.
The ExceLab add-in extends native spreadsheet functions with patented, formula-based numerical solvers— no separate GUI, no scripts, no custom code. Your models stay in cells, just with far more math power.
Trusted by engineers, researchers, educators, and analysts worldwide.
What ExceLab solves
Integrals
Evaluate single and multiple integrals from analytic formulas or tabulated data using highly accurate adaptive algorithms.
Derivatives
Compute first and higher-order numerical derivatives from analytic formulas or tabulated data using highly accurate adaptive algorithm.
Interpolation & gridding
Interpolate scattered data points into smooth grids and surfaces ready for plotting and contouring using best known Natural Neighbour Algorithm.
Nonlinear equations & fitting
Solve nonlinear and coupled systems, perform curve fitting, and estimate parameters without leaving the spreadsheet environment using proven Algorithm.
ODE & PDE
Formulate and solve ordinary and partial differential equation systems directly within the spreadsheet using highly-accurate fully-implicit adaptive algorithms.
Optimization & optimal control
Combine ExceLab solvers with Excel’s built-in Solver for parameter estimation, constrained optimization, and dynamic control problems.
Explore detailed examples in the Manual·
Why choose ExceLab?
- Extend native Excel/Sheets math with a powerful library of calculus solvers.
- Use solvers like built-in functions—just write formulas in cells, no code or macros.
- Run the same models on Windows, macOS, Excel Online, and Google Sheets.
- Rely on state-of-the-art algorithms engineered for robust, accurate results.
- Share analysis as ordinary workbooks—no special runtime or viewer required.
- Evaluate it free on your own problems, with responsive expert support.
- Fast to start: lightweight add-in, one-click install, ready in minutes.
Watch a quick illustration for computing integrals with ExceLab solvers
What our users say
ExceLab 7.0 is a perfect product—used daily and saving unbelievable time in calculations and result analysis.
Engineering userThe calculus add-in has been incredibly helpful. Support responds quickly and effectively. I definitely recommend this add-in.
Research engineerThe ability to share models and results in a familiar Excel platform, with a near-zero learning curve, compelled us to move our models to ExceLab.
Principal ScientistI found excel-works derivative functions quite useful. I was particularly pleased with the prompt response for assistance when I required some technical issues to be resolved.
Technical Manager