Best Engineering Calculator Products in 2025

Numi is a beautiful text calculator for Mac.

Key Numi App features:

Intuitive Interface Versatile Functionality Integration Capabilities Customizable Settings

Open Source

SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .

Key SpeedCrunch features:

High Precision Expression Parsing User-Friendly Interface Keyboard Shortcuts

Qalculate! is a multiplatform multi-purpose desktop calculator.

Key Qalculate! features:

Versatility Extensive Unit Conversions Currency Conversion Customizability

Open Source

fxSolver is an free online math solver, equation library, graphing calculator and science/engineering problem helper. To get started, add some formulas, fill in any input variables and press "Solve.".

Key fxSolver features:

User-Friendly Interface Extensive Formula Library Free to Use Graphical Analysis

PTC Mathcad PTC Mathcad is Engineering Math Software That Allows You to Perform, Analyze, and Share Your Most Vital Calculations.

Key PTC Mathcad features:

User-Friendly Interface Engineering Notation Live Mathematical Calculations Integration Capabilities

Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.

Key calculator.net features:

Comprehensive Range of Calculators User-Friendly Interface Free Access Detailed Explanations

Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.

Key Soulver features:

Intuitive Interface Live Calculations Natural Language Processing Versatile Units and Conversions

Tiny, powerful, free mathematical program with WYSIWYG editor and complete units of measurements support.

Key SMath Studio features:

Freeware Cross-Platform User-Friendly Interface Extensive Functionality

Heat balance, engineering design, and cost estimation software since 1987.

Key Thermoflow features:

Comprehensive Suite Industry Experience Customizability User Support

Simple and beautiful calculator for Android. Contribute to Darkempire78/OpenCalc development by creating an account on GitHub.

Key OpenCalc features:

Open Source Customizable Community Support Transparency

The Collaborative Computational Notebook Built for Modern Engineering.

Key Swift Calcs features:

User-Friendly Interface Collaborative Features Cloud-Based Access Documentation and Annotation

The cloud-based heat balance and process simulation software that is used for power generation, desalination, refrigeration and more.

Key IPSE GO features:

Reliable Performance Online Collaboration Flexable to Your Needs

IPSEpro is a state-of-the-art heat and mass balance simulation software used for power generation, desalination, refrigeration, and other custom applications.

Key IPSEpro features:

Flexability Performance