Microsoft Excel vs Proton Sheets

Microsoft Excel

• People who need a full desktop spreadsheet on Windows or Mac
• Analysts working with PivotTables, Power Query and Python
• Households: Microsoft 365 Family covers 1 to 6 people
• Occasional users who only need the free browser version

Proton Sheets

• People who want spreadsheets the provider itself cannot read
• Teams handling client or financial data under privacy requirements
• Existing Proton Drive users who want a spreadsheet in the same account

Microsoft Excel

• The Windows and Mac apps need a Microsoft 365 subscription or a one-time Office purchase; only the web and mobile versions are free.
• Excel for the web and the mobile apps have many, but not all, desktop features; macro-enabled workbooks open in a browser but the macros do not run.
• Copilot needs a paid subscription, has usage limits, and on shared plans works for the subscription owner only.
• Microsoft 365 Business Basic ($7.00 per user / month paid yearly, or $5.40 without Teams) includes only the web and mobile versions of Excel.

Proton Sheets

• There is no standalone Sheets plan; it is part of Proton Drive, and the paid plans differ in storage and bundled Proton services.
• In the Windows and macOS Drive apps a spreadsheet is only a placeholder file that opens in the browser at docs.proton.me.
• People invited by email need a Proton Account to open a shared spreadsheet; public links do not require one.
• The free plan's 5 GB of storage is shared with files, photos and documents kept in Proton Drive.

Microsoft Excel

Copilot in Excel

Edits formulas, tables and formatting from a written request and suggests formulas for the data. It needs a Microsoft 365 subscription and a workbook saved to OneDrive with AutoSave on.

PivotTables and charts

PivotTables calculate, summarize and analyze data to show comparisons, patterns and trends, and work with PivotCharts, slicers and timeline controls.

Power Query

Imports or connects to external data from files, databases, the web and Azure, then reshapes it before loading. It is available in Excel for Windows, Mac and the web; support on Mac and the web is newer than on Windows.

Python in Excel

Python formulas run in the grid using Anaconda libraries such as pandas and Matplotlib. It comes with eligible Microsoft 365 plans; a $24 per user / month add-on gives faster premium compute.

Co-authoring

Several people can work in one workbook stored in OneDrive or SharePoint Online and see each other's changes within seconds. In the Windows and Mac apps this requires a Microsoft 365 subscription.

Templates

Microsoft offers free Excel templates in more than 40 categories as ready-made starting points for common spreadsheets.

Proton Sheets

End-to-end encryption by default

Spreadsheets are encrypted on the device before upload, including metadata such as file names, so no one but the owner and invited collaborators can read them, not even Proton.

Real-time collaboration

Edits from other people appear as they type, each collaborator has a named cursor, and notes can be attached to cells. Changes sync without a save step.

Sharing controls

Share with specific people as Editor or Viewer, or create a public link with an optional password and expiration date. Access can be changed or revoked at any time.

Formulas, charts and data tools

Built-in functions such as SUM and IF, bar, line and pie charts, conditional formatting, data validation and multiple tabs in one spreadsheet.

Import and export

Imports CSV, TSV and XLSX files into a new or existing sheet and downloads spreadsheets as XLSX, CSV or TSV. ODS import and export were added in beta in February 2026.

Microsoft Excel

• Free$0

  Excel for the web for 1 person, with sharing and real-time collaboration and 5 GB of cloud storage. Works on web, iOS and Android.

• Microsoft 365 Personal$9.99

  per month, or $99.99 per year

  1 person signed in on up to 5 devices, 1 TB of cloud storage, and the Excel, Word, PowerPoint and Outlook desktop apps with Copilot.

• Microsoft 365 Apps for business$10.00

  per user / month, paid yearly

  Desktop versions of Excel, Word, PowerPoint and Outlook for up to 300 employees, with 1 TB of cloud storage per user.

• Microsoft 365 Family$12.99

  per month, or $129.99 per year

  Everything in Personal for 1 to 6 people, with 1 TB of storage per person. AI features are for the subscription owner only.

• Microsoft 365 Premium$19.99

  per month, or $199.99 per year

  Everything in Family, plus extensive Copilot usage and agentic AI features such as advanced research and analytics.

• Office Home 2024$179.99

  one-time purchase for 1 PC or Mac

  Classic 2024 desktop versions of Excel, Word, PowerPoint and OneNote, with no upgrade path to the next major release.

Proton Sheets

• Proton Free$0

  5 GB of storage for files, photos and documents, with the online document and spreadsheet editor.

• Drive Plus$3.99

  per month, billed yearly at $47.88 ($4.99 billed monthly)

  Proton Drive with Sheets, 200 GB of storage and 10 years to recover previous file versions.

• Drive Professional$7.99

  per user / month, billed yearly ($9.99 billed monthly)

  Team plan for Proton Drive with Sheets: 1 TB per user, user access management and sync across devices and users.

• Proton Unlimited$9.99

  per month, billed yearly at $119.88 ($12.99 billed monthly)

  500 GB of storage plus Proton VPN, Proton Mail, Proton Calendar and Proton Pass alongside Drive and Sheets.

• Proton Duo$14.99

  per month, billed yearly at $179.88 ($19.99 billed monthly)

  Everything in Unlimited for up to 2 users, with 2 TB of storage and advanced account protection.

• Proton Family$23.99

  per month, billed yearly ($29.99 billed monthly)

  3 TB of storage for up to 6 users, with the Proton premium products that are included in Duo.

Microsoft Excel

• Annual discount

  Save up to 17% by paying yearly

  Microsoft 365 Personal is $99.99 a year against $9.99 a month, Family $129.99 against $12.99 and Premium $199.99 against $19.99.

• Education

  Students save 50% on Microsoft 365 Personal

  Verified college and university students get Microsoft 365 Personal at half price. Student status has to be re-verified each year to keep the discount.

• Education

  Office 365 A1 free for eligible schools

  Educators and students with an eligible education email address get Office 365 A1 at no cost, which includes the web versions of Excel and the other core apps.

• Nonprofit

  Nonprofit staff pricing on Microsoft 365 E3

  Eligible nonprofits can buy Microsoft 365 E3, with desktop, web and mobile versions of Excel, for $9.75 per user / month paid yearly.

• Lifetime license

  Office Home 2024 one-time purchase

  $179.99 buys the classic 2024 desktop versions of Excel, Word, PowerPoint and OneNote for 1 PC or Mac, with no subscription.

Proton Sheets

• Annual discount

  20% to 25% off with yearly billing

  Billed yearly, Drive Plus is $3.99 a month instead of $4.99 (20% off), Proton Unlimited is $9.99 instead of $12.99 (23% off) and Proton Duo is $14.99 instead of $19.99 (25% off).