Eight Newer Claude Features, Tried on Real Work · Lesson 5 of 8

Claude inside your spreadsheet and slides

20 minutes. Works on: paid plans (Pro, Max, Team or Enterprise). You also need Microsoft Excel or PowerPoint from a Microsoft 365 subscription, or Google Sheets, Docs or Slides.

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Most office work doesn't happen in a chat window. It happens in a spreadsheet somebody built in 2019, with a tab nobody understands and a formula nobody dares to touch.

Claude now works inside those files. It opens in a side panel next to your spreadsheet, document or deck. It can read what's there, explain it, and make changes in place. You don't copy and paste between windows anymore.

What changed this year
  • February 5, 2026: Claude for PowerPoint arrived as an add-in. Claude for Excel gained pivot table editing and conditional formatting.
  • March 11, 2026: the Excel and PowerPoint add-ins started sharing the conversation, so Claude can use what it learned in one when it works in the other.
  • October 6, 2026: Claude for Google Docs, Sheets and Slides arrived as a public beta.

Anthropic says Claude for Excel, PowerPoint and Word are generally available on all paid plans. Claude for Outlook is in beta. The Google add-on is in beta on Pro, Max, Team and Enterprise. None of them is on the free plan.

What it's good for

In a spreadsheet:

  • "What does this sheet track?" Claude answers and points to the cells it used.
  • "Explain the formula in column F." Then "where does this number come from?"
  • Sorting, filtering, pivot tables, conditional formatting (highlighting) and dropdown lists.

In a deck:

  • New slides that follow your own template.
  • A change to one slide without redoing the whole deck.
  • Turning a slide of bullets into a simple diagram or a real PowerPoint chart.

In a document: Anthropic says Claude for Word can edit with tracked changes, answer comment threads, and use your company's styles. In Google Docs it can fix a sentence or suggest changes you accept or dismiss.

The rules Anthropic gives, and one of ours

Anthropic's own pages are careful here, and the advice is good:

  • Work on a copy. Anthropic suggests starting "with a trusted copy of the workbook" before asking for wide changes.
  • Only use trusted files. Its pages say to use the add-ins only with spreadsheets and decks you trust.
  • A person reviews anything that leaves. Anthropic doesn't recommend it for final customer work without review, or for critical calculations without checking.

Our rule on top: start with your work, not your money. Job lists, schedules, call logs and inventory counts are great first spreadsheets. Leave the books and anything with customers' payment details out of it.

Safety nets built in. In Excel, Anthropic says Claude warns you before overwriting existing data and asks you to confirm risky changes. In Google's add-on, the default mode is Ask before edits: every change shows up as a card and waits for you to click Allow. Leave it that way while you're learning. (The other mode, Accept all edits, still pauses for links, images and anything that changes who can see the file.)

How to install it

Microsoft (Excel, PowerPoint, Word):

  • Open the Microsoft AppSource listing called Claude for Microsoft 365 and choose Get it now.
  • Open Excel (or PowerPoint), turn on the add-in, and sign in with your Claude account.

You need the Microsoft 365 versions of Excel or PowerPoint, on the web, Windows or Mac. Anthropic says the older Excel 2016 and 2019 one-time-purchase versions aren't supported, and neither are the iPad or Android apps.

Google (Docs, Sheets, Slides):

  • Install Claude from the Google Workspace Marketplace.
  • Open a file and choose Extensions > Claude > Open Claude.

Use Chrome, Edge or Safari; Anthropic says Firefox isn't supported in this beta. Keep the side panel open while Claude works.

On a Team plan, or a company Microsoft or Google account, your administrator may have to allow it first. If Microsoft blocks the add-in or Google says "This application is not allowed by your administrator," ask whoever runs your Microsoft 365 or Google Workspace. In Microsoft 365, they can also install it for everyone.

The Comfort Zone version

Tina's job tracker had grown to 900 rows: date, town, job type, technician, status and date closed. Nobody could answer "how many open jobs are older than a week?" without an afternoon of scrolling.

She saved a copy, opened Claude in Excel, and asked three things:

  • "What does this sheet track? Point me to the columns."
  • "On a new sheet, build a pivot table of jobs by week and technician."
  • "Highlight rows where the status is open and the job date is more than 7 days ago."

She checked five highlighted rows by hand. All five were right, and two of them were jobs everyone thought were closed. Then, in PowerPoint, she asked Claude to turn the bullet points on the Monday meeting's third slide into a simple chart from the pivot table.

Do this now
  • Save a copy of a real work spreadsheet: a job list, schedule, call log or inventory count. Not the books.
  • Install the add-in for the tool you use (Microsoft or Google).
  • Ask: "What does this sheet track? Point me to the columns."
  • Ask for one pivot table or summary on a new sheet.
  • Ask for one highlighting rule, like "highlight anything open more than 7 days."
  • Check five rows by hand.

Check it worked

  • You worked on a copy, and the original file is untouched.
  • Claude's answer pointed to real columns, and the five rows you checked were right.
  • On Google, you approved each change with Allow.

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Next: put the keyboard down. Talk to Claude from your phone, between jobs.

→ Lesson 6: Talk to it from the truck

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