File Split & Merge

Complete Guide to Split Large CSV into Multiple Files

Sahil Verma
Sahil Verma November 14, 2025
4 min read
Summary: Working with large CSV files can be a daunting task, especially when it comes to managing extensive data. To split large CSV into multiple files proves to be helpful in such situations. Follow our easy-to-use guide for a seamless CSV file splitting process. Moreover, for quick and accurate results, we recommend using our reliable EmailXport CSV Splitter tool.

Whether you are a data analyst, an IT professional, or a business owner, you must have encountered the challenge of working with massive CSV data files. Splitting large CSV files into multiple smaller, more manageable files is a simple yet effective solution for this problem. In this blog post, we’ll show you how to split large CSV into multiple files using easy methods, including third-party software, to help you execute an error-free process.

Why split large CSV file into multiple files?

There can be various reasons to split large CSV file into multiple files, varying from user to user. Here is a list of some of them:

  • Easier data management
  • Reduced data loss risk
  • Improved performance
  • Faster data transfer
  • Reduced memory space
  • Better data analysis
  • Compliance with software
  • Simplified data backup
  • Improved data security

How to split large CSV into multiple files

Follow the methods listed below carefully to split large CSV into multiple files.

Method 1. Manually copy-pasting using MS Excel

To split large CSV into multiple files, you can manually copy-paste it. Here are the steps to do it:

Step 1. Locate the CSV file and right-click on it. Then click on Open with and select Excel.click on Open with and select Excel

Step 2. Select the required rows and press CTRL+C.Select the required rows

Step 3. Open a new Excel file and press CTRL+V to paste the data.Open a new Excel file and paste data

Method 2. Split large CSV file using an automated tool

Splitting large CSV files into multiple smaller files manually isn’t possible due to a lack of reliable methods. But it can be easily done using a professional tool. The best software that fits in this scenario is the EmailXport CSV Splitter tool. This CSV Splitter tool comes with a wide range of features, allowing users to perform error-free procedures.

Benefits of using a professional CSV Splitter:

  • The software allows you to split and merge multiple CSV files in one go.
  • Split large CSV file into multiple files based on size and rows.
  • Multiple smart filtering options for precise CSV file splitting.
  • Various saving formats, including XLS, XLSX, CSV, XML, and ODS.
  • Preserves complete data integrity and structure in the output file.
  • Comes with a free trial version to split the first 25 items per CSV file.

Step-by-step guide to split large CSV file:

Step 1. Download, install and open the EmailXport CSV Splitter tool and click on the Split option.EmailXport CSV Splitter

Step 2. Click on the Add File button to upload CSV files, then click Next.Click on the Add File button

Step 3. Select any splitting process, then click Browse to provide a saving location, then click Split.Select any splitting process

Step 4. The CSV splitter tool will begin the splitting process.Start splitting process

Step 5. Once the process is completed, click OK, then click Open the Folder Location to view saved files.click Open the Folder Location

Step 6. Here, you can click on the saved CSV file and view its content.click on the saved CSV file and view its content

Conclusion

Splitting large CSV files helps improve data management and analysis. By using the method outlined in this guide, you can efficiently split your CSV files according to your needs. Moreover, we recommend using our suggested software for a hassle-free process. This feature-rich tool makes the entire process seamless without data loss.

Frequently Asked Questions

Q. How to split large CSV into multiple files manually?

A. To split large CSV into multiple files manually, you can open the CS file in Excel and copy-paste the required data into a new file.

Q. Which is the best software to split large CSV files?

A. The best software to split large CSV files is the EmailXport CSV Splitter tool.

EmailXport CSV Splitter
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