How to get the cuda version?

Is there any quick command or script to check for the version of CUDA installed?

I found the manual of 4.0 under the installation directory but I’m not sure whether it is of the actual installed version or not.

19 Answers

As Jared mentions in a comment, from the command line:

nvcc --version

(or /usr/local/cuda/bin/nvcc --version) gives the CUDA compiler version (which matches the toolkit version).

From application code, you can query the runtime API version with


or the driver API version with


As Daniel points out, deviceQuery is an SDK sample app that queries the above, along with device capabilities.

As others note, you can also check the contents of the version.txt using (e.g., on Mac or Linux)

cat /usr/local/cuda/version.txt

However, if there is another version of the CUDA toolkit installed other than the one symlinked from /usr/local/cuda, this may report an inaccurate version if another version is earlier in your PATH than the above, so use with caution.

On Ubuntu Cuda V8:

$ cat /usr/local/cuda/version.txt

If you run


You should find the CUDA Version on the top right corner of the comand’s output. At least I found that output for CUDA version 10.0 e.g., enter image description here

For CUDA version:

nvcc --version

Or use,


For cuDNN version:

For Linux:

Use following to find path for cuDNN:

$ whereis cuda
cuda: /usr/local/cuda

Then use this to get version from header file,

$ cat /usr/local/cuda/include/cudnn.h | grep CUDNN_MAJOR -A 2

For Windows,

Use following to find path for cuDNN:

C:>where cudnn*
C:Program FilescuDNN7cudabincudnn64_7.dll

Then use this to dump version from header file,

type "%PROGRAMFILES%cuDNN7cudaincludecudnn.h" | findstr CUDNN_MAJOR

If you’re getting two different versions for CUDA on Windows – Different CUDA versions shown by nvcc and NVIDIA-smi

On Ubuntu :


$ cat /usr/local/cuda/version.txt or $ cat /usr/local/cuda-8.0/version.txt

Sometimes the folder is named “Cuda-version”.

If none of above works, try going to $ /usr/local/ And find the correct name of your Cuda folder.

Output should be similar to: CUDA Version 8.0.61

Use the following command to check CUDA installation by Conda:

conda list cudatoolkit

And the following command to check CUDNN version installed by conda:

conda list cudnn

If you want to install/update CUDA and CUDNN through CONDA, please use the following commands:

conda install -c anaconda cudatoolkit
conda install -c anaconda cudnn

Alternatively you can use following commands to check CUDA installation:



nvcc --version

If you are using tensorflow-gpu through Anaconda package (You can verify this by simply opening Python in console and check if the default python shows Anaconda, Inc. when it starts, or you can run which python and check the location), then manually installing CUDA and CUDNN will most probably not work. You will have to update through conda instead.

If you want to install CUDA, CUDNN, or tensorflow-gpu manually, you can check out the instructions here

If you have installed CUDA SDK, you can run “deviceQuery” to see the version of CUDA

You might find CUDA-Z useful, here is a quote from their Site:

“This program was born as a parody of another Z-utilities such as CPU-Z and GPU-Z. CUDA-Z shows some basic information about CUDA-enabled GPUs and GPGPUs. It works with nVIDIA Geforce, Quadro and Tesla cards, ION chipsets.”

On the Support Tab there is the URL for the Source Code: and the download is not actually an Installer but the Executable itself (no installation, so this is “quick”).

This Utility provides lots of information and if you need to know how it was derived there is the Source to look at. There are other Utilities similar to this that you might search for.

One can get the cuda version by typing the following in the terminal:

$ nvcc -V

# below is the result
nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2017 NVIDIA Corporation
Built on Fri_Nov__3_21:07:56_CDT_2017
Cuda compilation tools, release 9.1, V9.1.85

Alternatively, one can manually check for the version by first finding out the installation directory using:

$ whereis -b cuda         
cuda: /usr/local/cuda

And then cd into that directory and check for the CUDA version.

We have three ways to check Version: In my case below is the output:- Way 1:-

cat /usr/local/cuda/version.txt


CUDA Version 10.1.243


nvcc --version


nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2017 NVIDIA Corporation
Built on Fri_Nov__3_21:07:56_CDT_2017
Cuda compilation tools, release 9.1, V9.1.85


/usr/local/cuda/bin/nvcc --version


nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2019 NVIDIA Corporation
Built on Sun_Jul_28_19:07:16_PDT_2019
Cuda compilation tools, release 10.1, V10.1.243


NVIDIA-SMI 450.36.06    Driver Version: 450.36.06    CUDA Version: 11.0

Outputs are not same. Don’t know why it’s happening.

After installing CUDA one can check the versions by: nvcc -V

I have installed both 5.0 and 5.5 so it gives

Cuda Compilation Tools,release 5.5,V5.5,0

This command works for both Windows and Ubuntu.

Apart from the ones mentioned above, your CUDA installations path (if not changed during setup) typically contains the version number

doing a which nvcc should give the path and that will give you the version

PS: This is a quick and dirty way, the above answers are more elegant and will result in the right version with considerable effort

First you should find where Cuda installed.

If it’s a default installation like here the location should be:

for ubuntu:


in this folder you should have a file


open this file with any text editor or run:

cat version.txt

from the folder


 cat /usr/local/cuda/version.txt 

If you are running on linux:

dpkg -l | grep cuda

if nvcc –version is not working for you then use cat /usr/local/cuda/version.txt

i get /usr/local – no such file or directory. Though nvcc -V gives

nvcc: NVIDIA (R) Cuda compiler driver
Copyright (c) 2005-2016 NVIDIA Corporation
Built on Sun_Sep__4_22:14:01_CDT_2016
Cuda compilation tools, release 8.0, V8.0.44

Found mine after:

whereis cuda


cuda: /usr/lib/cuda /usr/include/cuda.h


nvcc --version

CUDA Version 9.1.85

Programmatically with the CUDA Runtime API C++ wrappers:

auto v1 = cuda::version::maximum_supported_by_driver();
auto v2 = cuda::version::runtime();

This gives you a cuda::version_t structure, which you can compare and also stream, e.g.:

if (v2 < cuda::version_t{ 8, 0 } ) {
    std::cerr << "CUDA version " << v2 << " is insufficient." std::endl;

You can check the version of CUDA using

nvcc -V

or you can use

nvcc --version

or You can check the location of where the CUDA is using

whereis cuda 

and then do

cat location/of/cuda/you/got/from/above/command

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