Half-life Calculator© for Windows™

Half-life calculator© is a tool for calculating and graphing pk parameters based on serum level data.

Features of Half-life calculator©

• Enter up to ten serum level and date/time pairs.
• Least squares linear regression.
• Solve for dose or Vol disl.
• Save/load serum level profiles.
• Print report to printer or PDF file.
• Online help.

System requirements for Half-life calculator©

32- and 64-bit Windows OS:

• Vista, 7, 10

Hardware

• 128 MB of RAM
  
• 1 MB of available hard disk space
  

View Half-life calculator© screens

(Click thumbnails to view full size)

Half-life calculator© Version history

• Version 1.1.8 - Revision date: August 30, 2025
  • Updated to Delphi 15 - unsigned
• Version 1.1.7 - Revision date: May 16, 2013
  • Added ability to graph values down to 0.01.
• Version 1.1.6 - Revision date: May 4, 2013
  • Bug fixes
• Version 1.1.5 - Revision date: April 29, 2013
  • Increased size of input form and fonts.
• Version 1.1.4 - Revision date: April 26, 2013
  • Improved date/time validation.
• Version 1.1.3 - Revision date: April 23, 2013
  • Improved graph scaling.
• Version 1.1.2 - Revision date: April 18, 2013
  • Added save report to PDF.
  • Changed data set save location to My Documents folder.
  • Disabled dose date/time entry if not solving for dose or Vd.
• Version 1.1.1 - Revision date: April 17, 2013
  • Improved support for UK dates.
  • Improved secondary window placement.
  • Updated help file.
• Version 1.1.0 - Revision date: April 16, 2013
  • Improved serum level entry (grid format).
  • Added help file.
  • Added graph and report functions.
• Version 1.0.0 - Revision date: April 5, 2013
  • Initial beta.

Download Half-life calculator© for Windows

Half-life calculator© is free for educational, non-commercial use.

Click here to download Half-life calculator© for Windows 1.8 - - *Unsigned

Click here to download Half-life calculator© for Windows 1.7 - - signed

*Big scary warning from Windows for unsigned apps. Here's the deal. I no longer make enough money from the website to afford a code signing certificate. It's okay to click "Run anyway" if you downloaded from my website. -RxRick

Donate to support further development of Half-life calculator© for Windows

Half-life calculator© is free for educational, non-commercial use.

We do however ask for a small donation if you find the software useful in your practice. This is the only way we know whether to continue further development of this software. Click the PayPal button to open a new window to the secure payment site.