kalk is a powerful command line calculator app for developers.
Publisher’s description
What is kalk?
kalk is an open-source science & math program for Windows from Alexandre Mutel. It is written in C#.
Installation and requirements
Official installers exist for 64-bit and ARM64 as Portable. It runs without installation (portable).
Updates and version history
The current version is 0.13.0, released on September 14, 2025. 3 versions are listed since December 3, 2022, each with links to its own installer files. That is about 1.1 releases a year. The last update is more than a year old.
Popularity and file types
The source code on GitHub (xoofx/kalk) has 344 stars. Similar programs include Stellarium, KiCad and Quarto.
Project description on GitHub: “kalk is a powerful command line calculator app for developers.”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Native ARM64 build for Windows on Arm
- Portable: runs without installation
Cons
- No update for more than a year
In short: kalk is an open-source science & math tool for 64-bit and ARM64 PCs. Updates have slowed down.
Is kalk safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
377065E9D6BAD1AC25FF45F8564651A136F67242BA5C3A83809151B2CD61A38B· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 3 versions ›3 versions over 3 years · about 1.1 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 0.13.0Latest | September 14, 2025 | — | 64-bit ZIPARM64 ZIP |
| 0.12.1 | March 26, 2024 | — | 64-bit ZIP |
| 0.8.1 | December 3, 2022 | — | 64-bit ZIP |
Install from the command line
Silent install ›winget install --id xoofx.kalk -eRelated guide: How to use winget: install and update apps
Information
- Publisher
- Alexandre Mutel
- Category
- Science & maths
- Licence
- BSD-2-Clause
- Price
- Free
- Source code
- github.com/xoofx/kalk
- Written in
- C#
- Requires
- Windows 11 / 10
- Architecture
- 64-bit, ARM64
- Installer
- Portable
- Version
- 0.13.0
- Released
- September 14, 2025
- Added to the catalogue
- May 21, 2023
- Versions listed
- 3
- Updates / year
- 1.1
- GitHub stars
- 344
- GitHub forks
- 18
- Website
- github.com
- winget ID
- xoofx.kalk
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to kalk
See all ›-
Open source118K ↓ -
Open source126.7K ↓ -
Open source46K ↓ -
Qalculate!5.13.2A highly versatile desktop calculator, with support for units, physical constants, uncertainty propagation, symbolic calculations, etc.Open source50.3K ↓ -
Open source12.2K ↓ -
Open source24.6K ↓ -
Open source5.9K ↓ -
Open source17.7K ↓
Frequently asked questions
Is kalk free?
Yes. kalk is open-source software under the BSD-2-Clause licence.
Is kalk safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install kalk with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Does kalk run on ARM (Windows on Arm)?
Yes, there is a native ARM64 installer.
Where can I download an older version of kalk?
The versions page lists all 3 versions with links to their official installer files, back to December 3, 2022.
Can I use kalk without administrator rights?
Yes, it is portable: unpack and run it.
What are alternatives to kalk?
Stellarium, KiCad, Quarto, Qalculate! and JASP. The alternatives page compares them.
