Fill Google Spreadsheet with Random Data

The spreadSheetFill function will fill the cells of the currently active Google Spreadsheet with random data using Google Scripts. The random values are computed using the Math.random() method.

We could have used the rand() method of Google Spreadsheet directly but the disadvantage is the data will change / refresh every time you open the sheet or edit any cell.

Open the Google Apps Script editor inside the Google Spreadsheet and copy-paste the code. Next choose SpreadSheetFill from the Run menu and authorize.

/* Written by https://gist.github.com/thomaswilburn */

var rowConfig = 'timestamp name favorite note season'.split(' ');

var rowMapper = function (data) {
  var row = [];
  for (var key in data) {
    var index = rowConfig.indexOf(key);
    if (index > -1) {
      var value;
      if (key in data) {
        value = data[key];
      } else {
        value = '';
      }
      row[index] = data[key];
    }
  }
  for (var i = 0; i < row.length; i++) {
    if (typeof row[i] == 'undefined') {
      row[i] = '';
    }
  }
  return row;
};

function spreadSheetFill() {
  var sheet = SpreadsheetApp.getActiveSheet();
  var count = 1000;
  var firstNames = ['Alice', 'Bob', 'Charles', 'Dawn', 'Erin', 'Fred', 'Gwen', 'Harry'];
  var lastNames = ['I.', 'J.', 'K.', 'L.', 'M.', 'N.'];
  var getRandom = function (arr) {
    return arr[Math.floor(Math.random() * arr.length)];
  };
  for (var i = 0; i < count; i++) {
    var position = Math.PI + Math.PI / 4 - Math.random() * Math.PI * 0.75;
    var distance = 5 * Math.random() + 7;
    var params = {
      timestamp: Date.now(),
      name: getRandom(firstNames) + ' ' + getRandom(lastNames),
      season: Math.random() > 0.5 ? true : '',
      favorite: Math.round(Math.random() * 90),
      note: Utilities.base64Encode(
        Utilities.computeDigest(
          Utilities.DigestAlgorithm.MD5,
          Math.round(Math.random() * 100000000) + '',
          Utilities.Charset.US_ASCII
        )
      ),
    };
    var row = rowMapper(params);
    sheet.appendRow(row);
  }
}
Amit Agarwal

Amit Agarwal

Google Developer Expert, Google Cloud Champion

Amit Agarwal is a Google Developer Expert in Google Workspace and Google Apps Script. He holds an engineering degree in Computer Science (I.I.T.) and is the first professional blogger in India.

Amit has developed several popular Google add-ons including Mail Merge for Gmail and Document Studio. Read more on Lifehacker and YourStory

0

Awards & Titles

Digital Inspiration has won several awards since it's launch in 2004.

Google Developer Expert

Google Developer Expert

Google awarded us the Google Developer Expert award recogizing our work in Google Workspace.

ProductHunt Golden Kitty

ProductHunt Golden Kitty

Our Gmail tool won the Lifehack of the Year award at ProductHunt Golden Kitty Awards in 2017.

Microsoft MVP Alumni

Microsoft MVP Alumni

Microsoft awarded us the Most Valuable Professional (MVP) title for 5 years in a row.

Google Cloud Champion

Google Cloud Champion

Google awarded us the Champion Innovator title recognizing our technical skill and expertise.

Email Newsletter

Sign up for our email newsletter to stay up to date.

We will never send any spam emails. Promise.