Engineering Equation Solver (EES)

fchart.com · checked 13 Nov 2026

#10 · Calculators

Visit fchart.com ↗ Alternatives Engineering Equation Solver (EES) vs CASIO Calculator Software

How it plugs in

—Public API

NoOpen source

TrialFree tier

Signal on Calculators5.4#10 of 21

EES solves coupled nonlinear algebraic and differential equations and also supports integration, optimization, uncertainty analysis, regression, unit conversion, and plots.

Engineering Equation Solver (EES) home page

Pricing

EES Commercial Single-UserOne year of Instant Update and Technical Service includedOn request
EES Professional Single-UserOne year of Instant Update and Technical Service includedOn request
Student EES LicenseOne year duration · Up to 3,000 simultaneous equations · print, copy and save · technical support$160/yr
EES Commercial (single-user)Includes one year of Instant Update and Technical Service · Single-user · up to 6,000 simultaneous equations$600 one-time
EES Professional (single-user)Includes one year of Instant Update and Technical Service · Single-user · up to 12,000 equations; 64-bit Professional up to 24,000$1,200 one-time

As fchart.com lists them, checked 24 Sept 2026.

Near it

All alternatives →

Runs on

Web
Windows
Mac
Linux
iOS
Android

Facts

Website: fchart.com
Price: From $160/yr
Free trial: Yes
Delivery and security: The maker states purchases are available through a secure webstore and software is downloaded with a license file and unique password sent by email.
Demo limitations: The demo is limited to 50 equations, has reduced property data, disables printing, copying and saving, and expires after 30 days.
Equation capacity: Commercial supports up to 6,000 simultaneous equations; Professional supports 12,000 and 64-bit Professional supports 24,000.
Headquarters: Madison, Wisconsin, United States
Licensing restriction: Named-user licenses are not perpetual; without IUTS renewal they terminate after five years, and floating licenses are not offered.
Maker background: F-Chart Software says it has produced thermal energy analysis software since 1975 and lists its address in Madison, Wisconsin.
Operating systems: EES was developed for Windows; the FAQ says it can run on Mac using Windows virtualization/Boot Camp and on Linux using Wine.
Optimization and analysis: EES offers curve-fitting, linear regression, property and contour plots, uncertainty analyses, and complex and differential equation solutions.
Professional capabilities: Professional includes a Python interface and supports communication with MATLAB and Excel through COM and DDE.
REFPROP integration: EES can read NIST REFPROP fluid files; an optional EES_REFPROP interface connects its property database with EES features.
Support and training: Training resources include online help, YouTube tutorials, the Mastering EES ebook, and potentially an on-site one-day course.
Thermophysical properties: It includes high-accuracy thermodynamic and transport property data for hundreds of substances.

On these boards

Calculators#10 of 21

Built Engineering Equation Solver (EES)?

Claim the page, then edit your card yourself from your member desk: its name, words, logo, screenshots, plans and links. Your desk shows how many readers open it.

Claim Engineering Equation Solver (EES)