Decay Lab
Radionuclide Decay Tool
About
This tool simplifies radionuclide decay calculations and radiation unit conversions. It's designed for professionals and students in nuclear medicine and related fields, offering a focused, offline workflow for quick and consistent results.
What's New in Decay Lab
2.1.0
September 6, 2026
The converter now does dose as well as activity: absorbed dose, equivalent dose and dose rates, with the time unit chosen separately. Gray and sievert stay in separate tables, since crossing between them needs a radiation weighting factor. Ads now wait for your consent choice, and a privacy footer links the policy. A vial is no longer called spent while it still holds a usable activity. The floor is now 1 Bq. Devices in the US start in mCi, elsewhere MBq.
MoreFAQ
What is Decay Lab used for?
Decay Lab is used for performing radionuclide decay calculations and converting between various radiation units. It helps professionals and students in nuclear medicine and related fields quickly and accurately manage radioactive decay data.
Does Decay Lab work offline?
Yes, Decay Lab is designed to work entirely offline. All calculation features are available without an internet connection, making it convenient for use in any environment.
What units does Decay Lab support for activity and dose?
Decay Lab supports activity units like Bq, kBq, MBq, GBq, TBq, nCi, µCi, mCi, and Ci. It also handles absorbed dose in Gy and rad, and equivalent dose in Sv and rem.
How many radionuclides does Decay Lab have data for?
Decay Lab includes built-in half-life data for 1,625 different nuclides, providing a comprehensive resource for calculations.
Is Decay Lab suitable for clinical decisions?
Decay Lab is a calculation and educational tool. Results should always be independently verified before being used in clinical, diagnostic, therapeutic, or safety-critical decisions.
What is the update frequency for Decay Lab?
The latest version, 2.1.0, was last updated on 2026-09-06. While specific update frequency isn't detailed, the app has received updates indicating ongoing development.
What devices is Decay Lab available on?
Decay Lab is available on iPhone and iPad devices, making it accessible to a wide range of Apple users.
Does Decay Lab have ads?
No, Decay Lab does not contain advertisements. It is a completely ad-free application, ensuring an uninterrupted user experience.
