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Proton Sheets

End-to-end encrypted online spreadsheets inside Proton Drive

Free plan · from $3.99/moSpreadsheetsChecked Oct 5, 2026
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Proton Sheets, as pictured on proton.me
How Proton Sheets presents itself. Image from proton.me.

Proton Sheets report card

3.4GPA

Very good · out of 4.0 · graded Oct 9, 2026

Best for spreadsheets that even the provider can't read

Proton Sheets is a spreadsheet that's end-to-end encrypted by default, so not even Proton can read what's in it. It's free with any Proton Drive account, and people can edit the same sheet together in real time. It keeps to the basics, though: functions like SUM and IF, bar, line and pie charts, and not a lot more.

Who Proton Sheets is for

  • Great if you want spreadsheets your provider can't read
  • Handy when you're handling client or financial data and privacy rules apply
  • Good for people already on Proton Drive, who get a spreadsheet in the same account

Who Proton Sheets is not for

  • Too light for heavy number work, as what's listed stops at functions, three kinds of chart and data validation
  • Skip it if you want a real desktop app, because on Windows and macOS a sheet just opens in the browser
  • Tight if your Drive is nearly full, since the free 5 GB is shared with your files and photos

Why Proton Sheets gets a 3.4

Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.

  • AValue for moneyThere's no Sheets plan to buy. It comes with Proton Drive, and Drive Plus is $3.99 a month billed yearly for 200 GB, well under the $9.99 this category typically starts at. Paying buys storage and other Proton services, not more spreadsheet.
  • AFree plan and trialFree with any Proton Drive account, with 5 GB of encrypted storage and the whole editor. Most people could stay here. Bear in mind that the 5 GB is shared with the files, photos and documents you keep in Drive.
  • BFeaturesEnd-to-end encryption, named cursors, notes on cells, and public links with an optional password and expiration date. The spreadsheet side is solid basics: built-in functions, bar, line and pie charts, conditional formatting, data validation and tabs. It imports and exports XLSX, CSV and TSV.
  • BEase of useNo app rating on record, so a B is as high as we go. If you have a Proton account it's already in your Drive, and changes sync without a save step. People you invite by email need a Proton Account, though a public link gets round that.
  • BPlatforms and integrationsWeb, iPhone and Android. But the only connections on record are Proton's own Drive and Docs, and in the Windows and macOS Drive apps a spreadsheet is a placeholder file that opens in the browser.

What these grades rest on. Graded from this listing, whose facts were read from Proton's own pages on 5 October 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.

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What is Proton Sheets?

Proton Sheets is the spreadsheet editor built into Proton Drive. Spreadsheets are end-to-end encrypted by default, so only the owner and the people a file is shared with can read them, and collaborators can edit the same sheet in real time. It is free with any Proton Drive account, and the paid Proton plans add storage and other Proton services.

Proton Sheets has a free plan. Paid plans start at $3.99 per month, billed yearly (Drive Plus). See every plan

Good for

  • 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

Worth knowing

  • 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.

Key features

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.

Proton Sheets pricing

Starts at
$3.99 per month, billed yearly (Drive Plus)
Free plan
Proton Free: 5 GB of end-to-end encrypted storage with the online document and spreadsheet editor. Anyone with a Proton Drive account can use Sheets at no charge.
Free trial
None listed
Proton Free$05 GB of storage for files, photos and documents, with the online document and spreadsheet editor.
Drive Plus$3.99per 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$7.99per 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$9.99per 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$14.99per 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$23.99per 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.

Read from proton.me on Oct 5, 2026. Prices change, so confirm with Proton Sheets before you buy.

Pricing in detail

Ways to pay less

  • Annual discount20% 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).

    Stated on proton.me

Works with

  • Proton Drive
  • Proton Docs

Proton Sheets alternatives

All Proton Sheets alternatives comparedAll spreadsheet and database tools

Common questions

Is Proton Sheets free?

Proton Sheets has a free plan. Proton Free: 5 GB of end-to-end encrypted storage with the online document and spreadsheet editor. Anyone with a Proton Drive account can use Sheets at no charge. Paid plans start at $3.99 per month, billed yearly (Drive Plus).

How much does Proton Sheets cost?

Proton Sheets lists 6 plans. Proton Free: $0. Drive Plus: $3.99 per month, billed yearly at $47.88 ($4.99 billed monthly). Drive Professional: $7.99 per user / month, billed yearly ($9.99 billed monthly). Proton Unlimited: $9.99 per month, billed yearly at $119.88 ($12.99 billed monthly). Proton Duo: $14.99 per month, billed yearly at $179.88 ($19.99 billed monthly). Proton Family: $23.99 per month, billed yearly ($29.99 billed monthly). Prices were read from proton.me on Oct 5, 2026.

What platforms does Proton Sheets work on?

Proton Sheets is available on Web, iOS and Android.

Does Proton Sheets offer any discounts?

Proton Sheets publicly lists the following: 20% to 25% off with yearly billing.

Does Proton Sheets have a Windows app?

No Windows app was listed when its pages were read on Oct 5, 2026. Proton Sheets is listed for Web, iOS and Android.

Does Proton Sheets have a macOS app?

No macOS app was listed when its pages were read on Oct 5, 2026. Proton Sheets is listed for Web, iOS and Android.

Is Proton Sheets open source?

Proton Sheets is not described as open source on its own site, as read on Oct 5, 2026.

Is Proton Sheets end-to-end encrypted?

Proton Sheets describes itself as end-to-end encrypted on its own site. Nobody here has audited that.

What does Proton Sheets integrate with?

Proton Sheets's listing names Proton Drive and Proton Docs. A listing names up to eight integrations, so it may connect to more.

Who makes Proton Sheets?

Proton Sheets is made by Proton AG. It dates from 2025.

What are the alternatives to Proton Sheets?

The closest alternatives to Proton Sheets in our directory are Google Sheets, Microsoft Excel, Zoho Sheet, CryptPad and LibreOffice Calc. Each one has a side-by-side comparison with Proton Sheets.

Sources for this page

The prices, plans, platforms and features above were read from these pages on Oct 5, 2026.