gives the estimated number of bytes readily available for storing additional data in the current Wolfram Language kernel session.
MemoryAvailable
gives the estimated number of bytes readily available for storing additional data in the current Wolfram Language kernel session.
Details
- MemoryAvailable [] reports memory that is available for allocation by your operating system.
- MemoryAvailable [] is affected by other processes running on your computer system.
- Dynamic [MemoryAvailable[]] gives dynamic results for available memory.
- On Mac, MemoryAvailable [] returns the sum of free and inactive memory.
- On Windows, MemoryAvailable [] returns the available memory reported by the operating system.
- On Linux, MemoryAvailable [] returns the MemAvailable parameter value of /proc/meminfo.
Examples
Basic Examples (3)
Memory available in the current kernel session:
Set up a dynamic display of available memory:
Measure memory available before and after a computation:
The difference in available memory is roughly accounted for by the structure created:
Tech Notes
Related Guides
History
Text
Wolfram Research (2017), MemoryAvailable, Wolfram Language function, https://reference.wolfram.com/language/ref/MemoryAvailable.html.
CMS
Wolfram Language. 2017. "MemoryAvailable." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/MemoryAvailable.html.
APA
Wolfram Language. (2017). MemoryAvailable. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/MemoryAvailable.html
BibTeX
@misc{reference.wolfram_2025_memoryavailable, author="Wolfram Research", title="{MemoryAvailable}", year="2017", howpublished="\url{https://reference.wolfram.com/language/ref/MemoryAvailable.html}", note=[Accessed: 17-November-2025]}
BibLaTeX
@online{reference.wolfram_2025_memoryavailable, organization={Wolfram Research}, title={MemoryAvailable}, year={2017}, url={https://reference.wolfram.com/language/ref/MemoryAvailable.html}, note=[Accessed: 17-November-2025]}