Can I convert TSV as well as CSV?

GridCraft Online accepts common tabular imports including CSV/TSV-style files. After import, confirm columns split correctly before you export XLSX.

Why do Chinese characters look wrong?

CSV encoding varies (UTF-8 vs GBK). Our GridCraft web build decodes common Chinese CSV encodings; if glyphs are still wrong, re-save the source as UTF-8 and import again.

Will leading zeros in ZIP codes or IDs be preserved?

Spreadsheet apps often coerce numeric-looking cells. After import, check ID columns and set text format if needed before export.

Step-by-step guide

How to Convert CSV to XLSX Online for Free

Import a CSV into GridCraft Online, check columns and encoding, then export an Excel-compatible .xlsx — free spreadsheet conversion in the browser.

Updated 2026-10-16

Follow the steps below, then open the real app to complete the task.

Open GridCraft Online

Answer in one minute

To convert a CSV to Excel .xlsx online with ArtCraft:

Open GridCraft Online.
Import your .csv (or TSV-style) file.
Check columns, encoding, dates, and leading zeros in the grid.
Export / save as XLSX for Excel-compatible sharing.

This is free spreadsheet editing in the browser — not a one-click “black box” converter that hides errors.

A concrete example

Suppose you export orders from a shop admin as orders-2026-10.csv:

order_id,sku,qty,zip,notes
00102,BAG-RED,2,01234,rush
00103,BOTTLE,1,10001,"leave at door"

After import you want a colleague to open orders-2026-10.xlsx in Excel. The risky parts are leading zeros in zip (01234) and quoted commas in notes. Always verify those cells before you send the file.

Step-by-step

1. Start GridCraft Online

Open GridCraft Online on a desktop browser and wait for the engine UI.

GridCraft Online

2. Import the CSV

Use Open / Import and select the .csv file. If Chinese text looks garbled, re-export the source as UTF-8, or try again — our GridCraft web build includes decoding for common Chinese CSV encodings (including GBK-style sources).

3. Verify the grid (do not skip)

Check at least:

Delimiter — columns should not collapse into one cell.
Encoding — accents and CJK characters render correctly.
Dates — 2026-10-16 vs locale formats; fix if months/days swapped.
Leading zeros — ZIP / account IDs may become numbers; set text if needed.
Quoted fields — commas inside quotes should stay in one cell.

4. Export XLSX

Use Save / Export / Download and choose an Excel-compatible .xlsx output. Open the result once in Excel or another reader before you archive the CSV.

TSV and other tabular files

GridCraft Online is built for spreadsheet workflows (XLSX/CSV/TSV-style imports). If a TSV opens as a single column, the delimiter was not detected — try converting to comma-separated UTF-8 CSV and import again.

Limits we will not over-claim

Very large CSVs can be slow in the browser.
We do not promise perfect Excel pivot/chart round-trips from CSV alone.
Always spot-check after conversion — converters that “always succeed” often hide silent data loss.

Related guide

Open an XLSX online without Excel

Convert your file now

Open GridCraft Online →

FAQ

Can I convert TSV as well as CSV?: GridCraft Online accepts common tabular imports including CSV/TSV-style files. After import, confirm columns split correctly before you export XLSX.
Why do Chinese characters look wrong?: CSV encoding varies (UTF-8 vs GBK). Our GridCraft web build decodes common Chinese CSV encodings; if glyphs are still wrong, re-save the source as UTF-8 and import again.
Will leading zeros in ZIP codes or IDs be preserved?: Spreadsheet apps often coerce numeric-looking cells. After import, check ID columns and set text format if needed before export.

Related guides

Independent online service. Not affiliated with Microsoft Excel, Word, PowerPoint, or the official ArtCraft desktop suite.