Best Unit Converters in 2025

Helping you make rational decisions, one calculation at a time.

Key Omni Calculator features:

User-Friendly Interface Wide Range of Calculators Accuracy Educational Value

A simple, immediate and fast unit converter!

Key Converter NOW features:

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

Open Source

It's More easy to covert the UNITS now with the APP.

Key Unit Converter features:

User-Friendly Interface Wide Range of Units Offline Functionality Regular Updates

Free measurement units converter: units converter, calculator, conversion tables and Excel formulas!

Key All The Units features:

Comprehensive Coverage User-Friendly Interface Free Access Regular Updates

Discover how Smart Tools AI is transforming productivity with advanced artificial intelligence. Unlock unprecedented efficiency and streamline your workflow.

Key Smart Tools AI features:

Keyword Analysis Website Management PDF Document Management Development Utilities

freemium $3.99 / Monthly

High-precision online units converter for everyday use.

free

A comprehensive unit conversion program.

Key ConvertAll features:

Versatility User-Friendly Interface Cross-Platform Compatibility Custom Units

multiConvert is a simple to use small sized unit converter for converting any unit into another one and getting the real time result on the main window of this program.

Key multiConvert features:

Versatile File Conversion User-friendly Interface High Conversion Speed Batch Conversion

Free online PDF tool set.

Key iLovePDF features:

User-Friendly Interface Wide Range of Tools Free Version Available Cloud Integration

Free online tools including image editors, text utilities, unit converters, calculators, color tools, file converters, and many other handy features.

Key NiftyUtils features:

Batch Image Resizer QR Code Generator Image Color & Palette Picker WCAG Color Contrast Checker

free

Check plagiarism don't risk it. 100% free advance and most accurate online plagiarism checker tool for students and teachers. With the percentage of the uniqueness of your text.

Key DupliChecker features:

Free Access Ease of Use Multiple Tools Quick Results

An all-in-one unit converter in 6 languages.

Key UnitConversion features:

User-Friendly Interface Wide Range of Units Quick Conversion Free to Use

Open Source

Smart title capitalization tool for non-english majors.