Skip to main content
St Louis

Back to all posts

How to Convert A NumPy Array to A PyTorch Tensor?

Published on
4 min read
How to Convert A NumPy Array to A PyTorch Tensor? image

Best Tools to Convert A NumPy Array to A PyTorch Tensor to Buy in September 2025

1 Shaper Trace Drawing Conversion Tool - Vector & SVG Creation Kit with Frame and App, No Subscription Required, Compatible with CNC, Laser & Vinyl Cutters

Shaper Trace Drawing Conversion Tool - Vector & SVG Creation Kit with Frame and App, No Subscription Required, Compatible with CNC, Laser & Vinyl Cutters

BUY & SAVE
$99.00
Shaper Trace Drawing Conversion Tool - Vector & SVG Creation Kit with Frame and App, No Subscription Required, Compatible with CNC, Laser & Vinyl Cutters
2 Digital Caliper, Sangabery 0-6 inches Caliper with Large LCD Screen, Auto - Off Feature, Inch and Millimeter Conversion Measuring Tool, Perfect for Household/DIY Measurment, etc

Digital Caliper, Sangabery 0-6 inches Caliper with Large LCD Screen, Auto - Off Feature, Inch and Millimeter Conversion Measuring Tool, Perfect for Household/DIY Measurment, etc

  • LARGE LCD SCREEN: EASY-READ DISPLAY FOR QUICK AND PRECISE RESULTS.

  • VERSATILE MEASURING MODES: MEASURE INSIDE, OUTSIDE, DEPTH, AND STEP EASILY.

  • DURABLE & SCRATCH-FREE: SAFE FOR DELICATE SURFACES IN ALL PROJECTS.

BUY & SAVE
$6.99 $9.99
Save 30%
Digital Caliper, Sangabery 0-6 inches Caliper with Large LCD Screen, Auto - Off Feature, Inch and Millimeter Conversion Measuring Tool, Perfect for Household/DIY Measurment, etc
3 Yakamoz Drill Angle Grinder Adapter with Flange Nut Parts Set, 6mm and 10mm Drill Arbor Mandrel Adaptor with 3 Set Replacement Grinder Flange Nuts and Spanner Wrench Conversion Tool

Yakamoz Drill Angle Grinder Adapter with Flange Nut Parts Set, 6mm and 10mm Drill Arbor Mandrel Adaptor with 3 Set Replacement Grinder Flange Nuts and Spanner Wrench Conversion Tool

  • VERSATILE ADAPTER TRANSFORMS DRILLS FOR DIVERSE GRINDING TASKS.
  • USER-FRIENDLY DESIGN FOR EFFORTLESS CONVERSION AND TIGHT FIT.
  • DURABLE HARD METAL CONSTRUCTION ENSURES LONG-LASTING PERFORMANCE.
BUY & SAVE
$9.99
Yakamoz Drill Angle Grinder Adapter with Flange Nut Parts Set, 6mm and 10mm Drill Arbor Mandrel Adaptor with 3 Set Replacement Grinder Flange Nuts and Spanner Wrench Conversion Tool
4 Digital Caliper, Adoric 0-6" Calipers Measuring Tool - Electronic Micrometer Caliper with Large LCD Screen, Auto-Off Feature, Inch and Millimeter Conversion

Digital Caliper, Adoric 0-6" Calipers Measuring Tool - Electronic Micrometer Caliper with Large LCD Screen, Auto-Off Feature, Inch and Millimeter Conversion

  • PRECISE MEASUREMENTS: MEASURE WITH ACCURACY OF +/- 0.01”, IDEAL FOR DIY.

  • 4 VERSATILE MODES: MEASURE INSIDE/OUTSIDE DIAMETERS, DEPTH, AND STEPS EASILY.

  • USER-FRIENDLY DESIGN: QUICK INCH/MM CONVERSION & LARGE LCD FOR EASY READING.

BUY & SAVE
$6.59 $9.99
Save 34%
Digital Caliper, Adoric 0-6" Calipers Measuring Tool - Electronic Micrometer Caliper with Large LCD Screen, Auto-Off Feature, Inch and Millimeter Conversion
5 NEIKO 01407A Electronic Digital Caliper Measuring Tool, 0 - 6 Inches Stainless Steel Construction with Large LCD Screen Quick Change Button for Inch Fraction Millimeter Conversions, Digital Caliper Measuring Tool

NEIKO 01407A Electronic Digital Caliper Measuring Tool, 0 - 6 Inches Stainless Steel Construction with Large LCD Screen Quick Change Button for Inch Fraction Millimeter Conversions, Digital Caliper Measuring Tool

  • QUICK UNIT CONVERSION: EASILY SWITCH BETWEEN INCHES, FRACTIONS, AND MM.

  • PRECISION MEASUREMENTS: ENJOY ACCURATE READINGS WITH 0.001”/0.02 MM ACCURACY.

  • DURABLE & PORTABLE: SPLASH RESISTANT WITH A STURDY CASE FOR SECURE STORAGE.

BUY & SAVE
$27.99
NEIKO 01407A Electronic Digital Caliper Measuring Tool, 0 - 6 Inches Stainless Steel Construction with Large LCD Screen Quick Change Button for Inch Fraction Millimeter Conversions, Digital Caliper Measuring Tool
6 Simhevn Electronic Digital Calipers, inch and Millimeter Conversion,LCD Screen displays 0-6" Caliper Measuring Tool, Automatic Shutdown, Suitable for DIY/Jewelry Measurement (New150mm Black Plastic)

Simhevn Electronic Digital Calipers, inch and Millimeter Conversion,LCD Screen displays 0-6" Caliper Measuring Tool, Automatic Shutdown, Suitable for DIY/Jewelry Measurement (New150mm Black Plastic)

  • VERSATILE 4-IN-1 MEASURING: MEASURE DIAMETERS, DEPTHS, AND STEPS SAFELY!

  • PRECISION AT YOUR FINGERTIPS: ACCURATE READINGS WITH ±0.2MM PRECISION!

  • EASY UNIT CONVERSION: SWITCH BETWEEN INCHES AND MM EFFORTLESSLY!

BUY & SAVE
$7.99 $12.99
Save 38%
Simhevn Electronic Digital Calipers, inch and Millimeter Conversion,LCD Screen displays 0-6" Caliper Measuring Tool, Automatic Shutdown, Suitable for DIY/Jewelry Measurement (New150mm Black Plastic)
+
ONE MORE?

To convert a NumPy array to a PyTorch tensor, you can follow these steps:

  1. Import the necessary libraries:

import numpy as np import torch

  1. Create a NumPy array:

numpy_array = np.array([[1, 2, 3], [4, 5, 6]])

  1. Convert the NumPy array to a PyTorch tensor:

tensor = torch.from_numpy(numpy_array)

  1. The NumPy array is now successfully converted to a PyTorch tensor, and you can further utilize it for various operations in PyTorch.

It's important to note that by default, this conversion shares the same memory between the NumPy array and the PyTorch tensor. Therefore, any modification in the tensor will affect the original array as well. If you want to create a new copy of the tensor, use the torch.tensor() function instead of torch.from_numpy().

What is the shape of a NumPy array?

A NumPy array can have any number of dimensions, including 0. The shape of a NumPy array refers to the size of each dimension. It is a tuple that contains the length (size) of each dimension in the array. For example, a 2D array with shape (3, 4) has 3 rows and 4 columns.

How to convert a NumPy array to a list?

To convert a NumPy array to a list, you can use the tolist() method of the NumPy array.

Here is an example:

import numpy as np

arr = np.array([1, 2, 3, 4, 5]) # create a NumPy array

lst = arr.tolist() # convert the NumPy array to a list

print(lst) # output: [1, 2, 3, 4, 5]

In the example above, the tolist() method is used to convert the NumPy array arr to a Python list lst. The lst variable will contain the converted list [1, 2, 3, 4, 5].

How to convert a Pandas DataFrame to a PyTorch tensor?

To convert a Pandas DataFrame to a PyTorch tensor, you can follow these steps:

  1. Import the necessary libraries:

import pandas as pd import torch

  1. Create a Pandas DataFrame:

df = pd.DataFrame({'A': [1, 2, 3], 'B': [4, 5, 6], 'C': [7, 8, 9]})

  1. Convert the DataFrame to a PyTorch tensor:

tensor = torch.tensor(df.values)

The .values attribute of the DataFrame returns a NumPy array, and then you can convert the NumPy array to a PyTorch tensor using the torch.tensor() function.

You can print the tensor to verify the conversion:

print(tensor)

This will output the PyTorch tensor containing the DataFrame values.

How to convert a Python list to a NumPy array?

To convert a Python list to a NumPy array, you can use the array() function from the NumPy library. Here's an example:

import numpy as np

Create a Python list

my_list = [1, 2, 3, 4, 5]

Convert the list to a NumPy array

my_array = np.array(my_list)

Print the array

print(my_array)

Output:

[1 2 3 4 5]

In this example, we import the NumPy library as np. Then, we create a Python list called my_list. We convert this list to a NumPy array using the np.array() function and store it in the variable my_array. Finally, we print the resulting array.

What is the shape of a PyTorch tensor?

A PyTorch tensor can have any number of dimensions, from a single dimension (vector) to multiple dimensions (matrix, tensor). The shape of a PyTorch tensor is represented as a tuple of integers, where each integer indicates the size of a specific dimension. For example, a tensor with shape (3, 4) has 2 dimensions: the first dimension has a size of 3, and the second dimension has a size of 4.

How to convert a PIL image to a NumPy array?

To convert a PIL (Python Imaging Library) image to a NumPy array, you can make use of the numpy.asarray() function. Here's an example:

from PIL import Image import numpy as np

Open the image using PIL

image = Image.open('image.jpg')

Convert the image to a NumPy array

image_array = np.asarray(image)

In the above example, image.jpg represents the path to the image file you want to convert. After opening the image using Image.open(), the np.asarray() function is used to convert the PIL image to a NumPy array.

Now you can work with the image_array as a NumPy array, perform various operations, and utilize the functionality provided by the NumPy library.