Google Sheets

Google Sheets makes your data pop with colorful charts and graphs. Built-in formulas, pivot tables and conditional formatting options save time and simplify common spreadsheet tasks. All for free. Choose from a wide variety of budgets, schedules, and other pre-made spreadsheets -- all designed to make your work that much better, and your life that much easier. Access, create, and edit your spreadsheets wherever you go -- from your phone, tablet, or computer -- even when there's no connection.

Works with Excel -- Open, edit, and save Microsoft Excel files with the Chrome extension or app. Convert Excel files to Google Sheets and vice versa.

Requirements:

Requires a Google Account.