Software Alternatives, Accelerators & Startups

UnitConversion VS Calcumber

Compare UnitConversion VS Calcumber and see what are their differences

UnitConversion logo UnitConversion

An all-in-one unit converter in 6 languages

Calcumber logo Calcumber

Calculate in a notebook and share โ€” from everyday math to engineering.
Visit Website
  • UnitConversion Landing page
    Landing page //
    2021-09-11
  • Calcumber Usefulness of units when calculating the weight of paper
    Usefulness of units when calculating the weight of paper //
    2026-07-25
  • Calcumber Calcumber interactively embedd on a web page
    Calcumber interactively embedd on a web page //
    2026-07-25
  • Calcumber Showcase from arithmetics to thermodynamics
    Showcase from arithmetics to thermodynamics //
    2026-07-25

Use variables, functions, and units and see results immediately. Add comments, copy calculations to apps like Word or Excel, or share them through an editable link. Calculate thermodynamic fluid properties with the integrated CoolProp library.

Calcumber

$ Details
free
Platforms
Web Windows Linux Mac
Release Date
2025 June
Startup details
Country
Switzerland
State
Aargau
City
Staufen
Founder(s)
Samuel Hartmann
Employees
1 - 9

UnitConversion features and specs

  • User-Friendly Interface
    UnitConversion.io offers a clean and intuitive interface, making it easy for users to find and convert units without hassle.
  • Wide Range of Units
    The website supports a comprehensive list of units across various categories, providing flexibility for different conversion needs.
  • Quick Conversion
    The conversion process is quick and responsive, allowing users to get results quickly without unnecessary delays.
  • Free to Use
    The service is free, allowing users to perform unit conversions without any subscription or payment requirements.
  • Mobile Compatibility
    UnitConversion.io is mobile-friendly, ensuring that users can access and use the website conveniently from their smartphones or tablets.

Possible disadvantages of UnitConversion

  • Limited Advanced Features
    The website could lack some of the more advanced features found in dedicated software or apps, which might be a limitation for power users.
  • Ad-Based Revenue Model
    UnitConversion.io may include ads on its platform, which could distract or interfere with the user experience.
  • No Offline Capabilities
    The service requires an internet connection, which means users are unable to perform conversions when offline.
  • Potential for Errors
    As with any online tool, there is a potential for errors in conversion if the underlying data is not regularly updated and verified.

Calcumber features and specs

  • ๐ŸŒฟ Naturally type expressions
    get immediate results
  • ๐Ÿ”— Copy and share
    keep calculations editable with a link
  • ๐Ÿงฉ Variables and constants
    pi, e, G, mu0
  • ๐Ÿงช Scientific functions
    sin, acos, log, round, and more
  • โ™จ๏ธ Thermodynamic fluid properties
    refrigeration, heat pumps, steam and air
  • ๐Ÿ’ก Installation optional
    run directly in your browser
  • ๐Ÿ“ฑ Multi-platform
    WebApp, Windows, more to come

Category Popularity

0-100% (relative to UnitConversion and Calcumber)
Online Calculators
81 81%
19% 19
Math Calculators
0 0%
100% 100
Unit Converters
100 100%
0% 0
Math Solver
0 0%
100% 100

Questions & Answers

As answered by people managing UnitConversion and Calcumber.

Why should a person choose your product over its competitors?

Calcumber's answer:

  • Sharing calculations and embedding them in documents or web pages is perfect for education.
  • Natural unit support, just include them in your expression and Calcumber handles it.
  • Free and easy access to thermodynamic fluid-properties.

What makes your product unique?

Calcumber's answer:

  • Easy to use calculator notebook
  • From simple arithmetic to advanced engineering with units
  • Installation optional
  • Send calculation link with full privacy
  • Embed calculation templates, exercices and soultions in documents or interactively in web pages

What's the story behind your product?

Calcumber's answer:

When starting for a Master of Advances Study in Energy Systems, I was looking for a suitable state-of-the-art calculator. Then I built my own Calculator Calcumber and now the Eastern Switzerland University of Applied Sciences is using Calcumber for teaching students in thermodynamics.

How would you describe the primary audience of your product?

Calcumber's answer:

  • The notebook-style calculator is great for everybody who wants more than just a single line calculator.
  • The sharing and embedding features make it Calcumber very well suited for teachers and students. The power of consistently using units is shown immediatly.
  • Engineers will like the unit support, sharing calculations with collegues and if needed the built-in fluid properties calculation.

Which are the primary technologies used for building your product?

Calcumber's answer:

HTML, CSS, TypeScript, PWA, CoolProp

Who are some of the biggest customers of your product?

User comments

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What are some alternatives?

When comparing UnitConversion and Calcumber, you can also consider the following products

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

Numara Calculator - A simple but powerful notepad calculator which evaluates expressions as you type.

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

SpeedCrunch - 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 Donateย .

Unit Converter - It's More easy to covert the UNITS now with the APP

Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.