Mathematica > Core Language > Tuning & Debugging > Memory Measurement & Optimization > MemoryInUse
Mathematica > Systems Interfaces & Deployment > Mathematica Sessions > Mathematica Session Information > Memory Measurement & Optimization > MemoryInUse
BUILT-IN MATHEMATICA SYMBOL

MemoryInUse

MemoryInUse[]
gives the number of bytes currently being used to store all data in the current Mathematica kernel session.

MemoryInUse[$FrontEnd]
gives the number of bytes used in the Mathematica front end.

ExamplesExamplesopen allclose all

Basic Examples (2)Basic Examples (2)

Current memory use in the kernel:

In[1]:=
Click for copyable input
Out[1]=
In[2]:=
Click for copyable input

Storing a million elements of takes additional memory:

In[3]:=
Click for copyable input
Out[3]=

Current memory use in the front end:

In[1]:=
Click for copyable input
Out[1]=

Possible Issues (1)Possible Issues (1)

Top
New in 1 | Last modified in 6
Send Feedback
Mathematica 9 is now available!

400+ new features, including the new Wolfram Predictive Interface, social network analysis, enterprise CDF deployment, and more »

Try Now
Buy/Upgrade
New to Mathematica? Find your learning path »
Have a question? Ask support »