Best Calculators in 2025

Numi is a beautiful text calculator for Mac.

Key Numi App features:

Intuitive Interface Versatile Functionality Integration Capabilities Customizable Settings

Open Source

Qalculate! is a multiplatform multi-purpose desktop calculator.

Key Qalculate! features:

Versatility Extensive Unit Conversions Currency Conversion Customizability

Open Source

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

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

Get help, support, and tutorials for Windows products—Windows 10, Windows 8.1, Windows 7, and Windows 10 Mobile.

Key Event Viewer features:

Comprehensive Logging Centralized Management Real-Time Monitoring Search and Filtering

A smart notepad with a built in calculator.

Key Soulver 3 for Mac features:

Intuitive Interface Flexible Calculations Real-time Results Units and Currency Support

Extendable calculator for the 21st century ⚡.

Key Parsify Desktop features:

User-Friendly Interface Natural Language Processing Cross-Platform Availability Custom Variables and Functions

Open Source

A simple, immediate and fast unit converter!

Key Converter NOW features:

User-Friendly Interface Wide Range of Conversions Accessibility No Installation Required

Open Source

The graphing calculator that makes learning math easier.

Key NumWorks features:

User-Friendly Interface Open-Source Python Programming Regular Updates

Free online scientific calculator from GeoGebra: perform calculations with fractions, statistics and exponential functions, logarithms, trigonometry and much more!

Key GeoGebra Scientific Calculator features:

User-Friendly Interface Comprehensive Calculation Features Cross-Platform Availability Interactive Graphics

PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody...

Key PCalc features:

Feature-Rich User-Friendly Interface Cross-Platform Availability Regular Updates

Calca is an advanced symbolic calculator for iOS, OS X, and Windows that's as easy to use as a text editor.

Key Calca features:

Real-time Calculation Markdown Support Variable Support Cross-Platform Availability

SpeQ is a small, extensive mathematics program with a simple, intuitive interface.

Key SpeQ Mathematics features:

User-Friendly Interface Lightweight Wide Range of Functions Custom Constants and Variables