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Head-to-head · Calculators

Engineering Equation Solver (EES) vs Microsoft Calculator

  • Updated Sep 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Engineering Equation Solver (EES) #7 in Calculators 6.9/10 From $160 · 30-day trial ✓ 4 of 6 features Visit EES
Microsoft Calculator #8 in Calculators 6.8/10 Free plan Free plan✓ 4 of 6 features Visit site

Engineering Equation Solver (EES) leads on 1 check, Microsoft Calculator on 2, and 3 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreEngineering Equation Solver (EES) · 6.9/10
  • Free planonly Microsoft Calculator

Engineering Equation Solver (EES) scores higher on our rubric for calculators: 6.9 against 6.8 out of 10; our editors rank them #7 and #8.

Microsoft Calculator offers free plan; Engineering Equation Solver (EES) doesn't. Engineering Equation Solver (EES) offers offline mode; Microsoft Calculator doesn't publish it. Microsoft Calculator offers calculation history; Engineering Equation Solver (EES) doesn't publish it.

Engineering Equation Solver (EES) is the better fit for engineers solving complex equation systems. Microsoft Calculator is the better fit for windows users wanting a capable free desktop calculator.

  • Engineering Equation Solver (EES) fits best

    Engineers solving complex equation systems

  • Microsoft Calculator fits best

    Windows users wanting a capable free desktop calculator

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. It never changes our verdict. How we rank.

Side by side

Feature Engineering Equation Solver (EES) 6.9/10 Visit ↗ Microsoft Calculator 6.8/10 Visit ↗
At a glance
Editor score 6.9 6.8
Ranking #7 in Calculators #8 in Calculators
Best for Engineers solving complex equation systems Windows users wanting a capable free desktop calculator
Pricing model Paid Free
Starting price Not published Not published
Free plan — ✓ (best)
Free trial — —
Deployment Desktop Desktop
Platforms Windows Windows
Support Email, Phone, Docs Community, Docs
Built for Small business, Mid-market, Enterprise Solo, Small business
Features Engineering Equation Solver (EES) 4/6 · Microsoft Calculator 4/6
Scientific functions ✓ ✓
Graphing ✓ ✓
Equation solver ✓ ✓
Financial functions Not published Not published
Offline mode ✓ (best) Not published
Calculation history Not published ✓ (best)
Our review
Pros
  • Solves nonlinear algebraic and differential equation systems.
  • Includes thermodynamic and transport property functions.
  • Supports parametric studies, uncertainty analysis, and plotting.
  • Includes scientific, programmer, and graphing modes alongside standard arithmetic.
  • Plots equations and supports equation solving in graphing mode.
  • Adds date calculations, unit and currency conversion, history, and memory.
Cons
  • Runs on Windows only.
  • Commercial and Professional license prices are not stated here.
  • Advanced optimization and automation features are limited to Professional.
  • Available as a desktop application for Windows only.
  • Does not include AI features.
  • Support channels are community and documentation.
Our verdict

Engineering Equation Solver (EES) is a Windows desktop program for engineers and others who regularly work with equation-based problems. It solves nonlinear algebraic and differential systems, and includes thermodynamic and transport…

Read the review →

Microsoft Calculator is an open-source desktop calculator maintained by Microsoft, aimed at Windows users who need more than standard arithmetic. It brings scientific and programmer modes into the same application as everyday calculations,…

Read the review →
  1. Engineering Equation Solver (EES)Calculators 6.9From $160 · 30-day trial
  2. Microsoft CalculatorCalculators 6.8Free plan

Strengths and trade-offs

  • Engineering Equation Solver (EES) — where it wins

    • Solves nonlinear algebraic and differential equation systems.
    • Includes thermodynamic and transport property functions.
    • Supports parametric studies, uncertainty analysis, and plotting.

    Where it doesn't

    • Runs on Windows only.
    • Commercial and Professional license prices are not stated here.
    • Advanced optimization and automation features are limited to Professional.

  • Microsoft Calculator — where it wins

    • Includes scientific, programmer, and graphing modes alongside standard arithmetic.
    • Plots equations and supports equation solving in graphing mode.
    • Adds date calculations, unit and currency conversion, history, and memory.

    Where it doesn't

    • Available as a desktop application for Windows only.
    • Does not include AI features.
    • Support channels are community and documentation.
  • Engineering Equation Solver (EES)6.9/10 · From $160 · 30-day trial

    A Windows equation solver for engineers working with complex systems and properties.

    Visit EESFull verdict →
  • Microsoft Calculator6.8/10 · Free plan

    A free Windows desktop calculator that goes beyond arithmetic with graphing and conversions.

    Visit siteFull verdict →

More comparisons

All calculators comparisons → · Full ranking →

Guides on calculators

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update