Kalker is a calculator program that supports user-defined variables, functions, derivation, and integration.
Publisher’s description
What is Kalker?
Kalker is an open-source science & math program for Windows from Kalker. It is written in Rust.
Installation and requirements
Official installers exist for 64-bit as MSI. Installation asks for administrator rights. The installer supports unattended (silent) installation. An MSI package is available for deployment with Group Policy, Intune or Configuration Manager.
Updates and version history
The current version is 2.2.3, released on July 10, 2026. 4 versions are listed since August 6, 2022, each with links to its own installer files. That is about 1 releases a year.
Popularity and file types
The source code on GitHub (PaddiM8/kalker) has 1,929 stars. Similar programs include Stellarium, KiCad and Quarto.
Project description on GitHub: “Scientific calculator with math syntax that supports user-defined variables and functions, complex numbers, and estimation of derivatives and integrals”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- MSI package for managed deployment
- Documented silent install
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: Kalker is an open-source science & math tool for 64-bit PCs. Administrators can deploy it unattended.
Is Kalker 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:
F7575C69A08A4BF41EBCA66A568D82702E64856D2F11601659BD84CF7A7ADED3· 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 4 versions ›4 versions over 4 years · about 1 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 2.2.3Latest | July 10, 2026 | — | 64-bit MSI |
| 2.2.1 | October 3, 2024 | — | 64-bit MSI |
| 2.0.3 | January 24, 2023 | — | Any CPU MSI |
| 2.0.0 | August 6, 2022 | — | Any CPU MSI |
Install from the command line
Silent install ›winget install --id PaddiM8.kalker -emsiexec /i kalker-windows.msi /qn /norestartmsiexec /x {6319751A-7D06-4060-AEB8-5905F35A57C9} /qn /norestartRelated guide: How to use winget: install and update apps
Information
- Publisher
- Kalker
- Category
- Science & maths
- Licence
- MIT
- Price
- Free
- Source code
- github.com/PaddiM8/kalker
- Written in
- Rust
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- MSI
- Version
- 2.2.3
- Released
- July 10, 2026
- Added to the catalogue
- August 6, 2022
- Versions listed
- 4
- Updates / year
- 1
- GitHub stars
- 1,929
- GitHub forks
- 84
- Website
- github.com
- winget ID
- PaddiM8.kalker
- MSI product code
- {6319751A-7D06-4060-AEB8-5905F35A57C9}
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is Kalker free?
Yes. Kalker is open-source software under the MIT licence.
Is Kalker 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 Kalker 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.
Can Kalker be installed silently?
Yes. The silent install page lists the exact command for each installer, including msiexec for the MSI package.
Does Kalker run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of Kalker?
The versions page lists all 4 versions with links to their official installer files, back to August 6, 2022.
What are alternatives to Kalker?
Stellarium, KiCad, Quarto, Qalculate! and JASP. The alternatives page compares them.
