{
“title”: “Claude in Excel: Skip the Midnight Spreadsheets”,
“Text1”: “
Picture a founder at 11pm. The office is empty, the coffee’s cold, and there’s one slide left to fix before the investor call tomorrow. A single number changed in the model, so now the chart is wrong, the summary is wrong, and the whole deck needs another pass by hand. That’s been the reality for anyone who lives inside spreadsheets and slides.
I came across a post from an AI founder who knows that grind better than most. This industry pro built every investor deck himself for years: every forecast, every slide, every last-minute chart. After selling his last company, he swore he’d never do it that way again. Now he’s running an AI startup, still in Excel and PowerPoint daily, but he says he doesn’t touch the manual part anymore. What changed his week is worth breaking down.
The shift he’s pointing at
Here’s the setup most people are stuck in. Founders live inside Excel and PowerPoint every single week. Building models by hand. Formatting decks at midnight. Cleaning data nobody has time to clean properly. Rebuilding the same chart for the third time because one figure moved.
The original poster makes a sharp observation: most of that work is repeatable, most of it is slow, and none of it ever needed a human doing it. That’s the tension he sat in for years, thinking it was just the job.
What actually changed
The creator points to something specific. Claude now works directly inside Excel and PowerPoint through Microsoft add-ins. This is the part I found genuinely surprising when I read it.
It’s not a copy-paste tool sitting in a separate tab. It edits the actual file you already have open. As the author describes it, Claude reads your model, understands how the cells connect, and explains why a number moved. That last piece is the one he says changed things for him. You’re not just getting an answer, you’re getting the reasoning behind it, cell by cell.
What it’s doing for his team right now
The expert laid out a full list of what he and his team are using it for. Here’s the rundown:
- Finds the 5 most important insights hiding in a messy workbook
- Builds a 3-year forecast straight from historical data
- Debugs every #REF and #VALUE error in seconds, then explains the fix
- Builds a pivot table summarising revenue by region and product
- Explains exactly why gross margin dropped, cell by cell
- Remembers standing rules, like never overwriting a formula without asking
- Builds a 10-slide deck from a single prompt
- Turns 6 messy bullet points into a clean process diagram
- Rewrites every slide title into an insight-driven headline
- Matches your existing template, fonts, and brand colours automatically
- Pulls numbers straight from your model into your investor deck
- Carries context across both files, so nothing gets copied and pasted twice
That last one is quietly the biggest deal. The context travels between the spreadsheet and the deck, so a number lives in one place and flows everywhere it’s needed. No more copy-pasting between two open tabs and praying they match.
The moment that sold him
The person who shared it gave one concrete example that stuck with me. He had it turn a full workbook into a five-slide executive summary in a single prompt. He said that used to take him and an analyst most of an afternoon.
That’s the real story here. It’s not that the tool is faster at one task. It’s that a job that used to eat two people’s afternoon now happens while you grab a coffee. The bottleneck was never the thinking, it was the manual assembly.
How you can try this yourself
If you want to test the workflow the author describes, here’s a simple way in:
- Open a workbook you already know well, ideally one with a few errors or a forecast you’d normally build by hand.
- Ask it to find the most important insights first, so you see how it reads the structure.
- Give it a standing rule, like “never overwrite a formula without asking me,” and watch it hold to that.
- Then ask it to turn the whole thing into a short executive summary deck that matches your template.
Start small, check its reasoning, and build trust before you hand off the bigger stuff.
Why this matters
The founder closes with a line I think is spot on. Most people still treat Claude as a chat window. The ones who pull ahead this year are treating it like the analyst and the designer they haven’t hired yet. Everyone else is still copy-pasting between two open tabs.
For a small team or a solo builder, that’s a real shift in leverage. You get analyst-level speed and designer-level polish without adding headcount, and you get your evenings back.
If this got you curious, go read the full LinkedIn post from the original creator for the complete breakdown and his examples. And here’s a question worth sitting with: what’s the one task in Excel or PowerPoint you’d hand off first?
”
}