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Can Claude convert a CSV into an Excel file?

Yes. Connect the Spreadsheet server to Claude or Cursor with one URL. Then ask in plain words. Ask questions of an Excel or CSV file and get exact answers. Free tier first, then Pro is $19 once.

Connect free in 1 minute See all Spreadsheet tools

What you get

orders_q3.xlsx, net sales by region

Computed from all 3,412 rows, largest first

Table
RegionPLN
Mazowieckie1,284,300
3 more regions...
Opolskie96,420
Rows read3,412
Example from "Sales by region from a raw export". Invented names, real math from the tools.

Free to start. Spreadsheet Pro is $19 once. Free vs Pro

An example, from prompt to finished file

Example scenarios built on the real tools of Spreadsheet. Names and amounts are invented.

Example · Ewa Dabrowska, sales coordinator at a furniture maker in Bydgoszcz

Sales by region from a raw export

You

Here is orders_q3.xlsx (uploaded). Give me total net sales in PLN by region, largest first.

  1. sheet_info Finds sheet Orders, 3,412 rows, columns region, net_pln, date
  2. sheet_query Groups by region, sums net_pln, sorts descending
Result

A 5-row table: Mazowieckie 1,284,300 PLN first, Opolskie 96,420 PLN last, computed from all 3,412 rows.

About 15 min saved (estimate)

Example · Graham Lewis, bookkeeper in Bristol

Find one invoice in a year of exports

You

Search ledger_2026.csv for INV-1187 and show me that row.

  1. sheet_find Finds INV-1187 at cell B2214 with a preview of the row
Result

The row with the 1,560.00 GBP amount and its posting date, without opening Excel.

About 5 min saved (estimate)

Example · Ines Moreau, shop owner in Bordeaux

Add VAT and hand over a CSV

You

In products.xlsx add a price_ttc column as price_ht times 1.2, then give me the result as CSV.

  1. sheet_add_column Adds price_ttc = price_ht * 1.2 and saves to a new file
  2. sheet_convert Converts the new file to CSV for her web shop import
Result

A 420-row CSV with gross prices in EUR. The original file isn't changed.

About 10 min saved (estimate)

Every example here works on the free tier. One $39 key removes the limits on all of them. Pricing

Connect in 1 minute

Paste one URL into Claude.ai, Claude Desktop, Cursor or VS Code. No install, no account.

1. Get a free token (30 days, 600 calls an hour)

curl -s -X POST https://mcp.zovo.one/mcp/token

2. Paste this URL as a custom connector

https://mcp.zovo.one/mcp/spreadsheet/t/<token>

Or run it locally (Node.js 18+)

npx -y @theluckystrike/mcp-spreadsheet

Free vs Pro for Spreadsheet

Free ($0, no key)Pro ($19 once)
Read files up to 5 MB and 5,000 rows (larger files return the first 5,000 rows with a note)No read limit up to the 50 MB file ceiling
Write up to 500 rows per fileNo write row limit
All sheets, formats and expressions
Hosted, up to 2 MB of loaded sheets per token
Where these limits come from

servers/spreadsheet/src/sheet.ts:14-16 (FREE_MAX_ROWS=5000, FREE_MAX_BYTES=5 MB, FREE_WRITE_ROWS=500); servers/spreadsheet/src/index.ts:102,122; https://mcp.zovo.one/s/spreadsheet

Buy Spreadsheet Pro, $19 Compare plans

Questions

Can Claude convert a CSV into an Excel file?
Yes. Connect the Spreadsheet server to Claude or Cursor with one URL. Then ask in plain words. Ask questions of an Excel or CSV file and get exact answers. Free tier first, then Pro is $19 once.
Does it change my original file?
No. New columns and conversions go to a new file unless you point out_path at the original.
What happens over the free limit?
Reads return the first 5,000 rows with a note. Writes over 500 rows write nothing and say so, so you never get a partial file.
Does it need Excel installed?
No. It reads and writes xlsx and csv itself, with no native dependency.

Related jobs

Spreadsheet

Work with Excel files in Claude

Yes. Claude edits uploaded .xlsx and CSV files with code execution, on by default on Free, Pro and Max. When the Spreadsheet server still helps.

You get: Table from your file PDF

Merge and split PDFs in Claude

Yes. Claude merges and splits PDFs you upload, with code execution on by default for Free, Pro and Max. The PDF server covers files on disk and Cursor.

You get: Stamped PDF Quotes

Send a quote from chat

Line items with VAT, a validity date and a PDF, made from one prompt. Turn the accepted quote into an invoice. Uses the Quotes server. Free tier, Pro $19 once.

You get: Quote

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Spreadsheet Pro, $19 once

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