I have a data file with 14 columns and 9,523,125 rows.

What online spreadsheet program (NOT A DATABASE!) can view at least 9,523,125 rows?

I must be able to:

  • upload the CSV file
  • view it (with some kind of paging I guess)
  • sort by a column

... just with a web browser (no browser add-on).

Preferably gratis. Either as a service or self-hosted.


2 Answers 2


One option which could be in a browser or in a command window/terminal is the combination of Python, ipython & Pandas plus for in a browser Jupyter - however it does not look much like a spreadsheet. I suspect that this would not be too much of a problem as few people have the time or inclination to read 9 million rows and would be looking at slices of such data or creating summaries such as min, max, mean, sd, etc.

Just to prove the point a generated a .csv file with 10,000,000 rows x 15 columns, (the first column a sequential number, the second a random integer in the range 1..5000000 and the rest "abcdef" and took some measurements with a final blank column due to me ending each line with a comma. I am running on a laptop running Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 17:00:18) [MSC v.1900 64 bit (AMD64)] under Win10/64.

ipython command prompt times:

%time df = pandas.read_csv('big.csv')
Wall time: 25.3 s
%time df = df.sort_values('Col_0') # This is the random number column
Wall time: 19 s
%time df['Col_0'].mean() 
Wall time: 183 ms
%time df['Col_0'].std()
Wall time: 364 ms

Of course with Jupyter notebooks we can do the same sort of thing in a browser: the above under Jupyter

Pandas will allow you to perform most of the likely manipulations on such a large data set including basic plotting and with the addition of one of the many charting libraries you can produce fancy graphs, etc.

Note that Jupyter & Pandas can be run as a self hosting solution or via a service such as mybinder.org or colab.research.google.com/notebooks/welcome.ipynb or hosted on AWS or similar.


CSV Explorer is an online tool to open big CSV files and spreadsheets with millions of rows. You can search, sort, and filter in a few clicks.


  • Please include the price and a screenshot, thanks!
    – Nicolas Raoul
    Commented Nov 19, 2018 at 4:11

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