KreoSheets

Free online spreadsheet editor for CSV, XLSX, and cloud workbooks

Create spreadsheets online, open CSV and Excel files, edit workbook data in your browser, and save supported work to KreoCloud when you need a private spreadsheet workspace.

Start with a blank sheet, import a local file, or continue from KreoCloud. KreoSheets is built for fast spreadsheet work inside the Kreotar browser-based productivity ecosystem.

Untitled Sheet

Cloud-backed sheet file

fx=SUM(B2:B8)
A
B
C
D
E
Revenue
$42k
18%

Create spreadsheets online

Start from a clean browser-based spreadsheet and begin editing cells, formulas, rows, columns, and workbook data instantly.

Open CSV files in your browser

Import CSV files, review tabular data, and continue working without switching to desktop spreadsheet software.

Open Excel files online

Bring supported XLSX workbooks into KreoSheets and continue editing spreadsheet content inside Kreotar.

Save and reopen with KreoCloud

Sign in to save supported spreadsheet work to your private KreoCloud workspace and reopen it later.

A browser-based spreadsheet workspace connected to KreoCloud

KreoSheets keeps spreadsheet work lightweight in the browser while KreoCloud helps signed-in users save, organize, and reopen supported workbook files across Kreotar.

Private spreadsheet workspace

Save supported spreadsheet files to your own KreoCloud account and keep your work organized with the rest of your Kreotar files.

Reopen from My Sheets

Continue recent spreadsheet work without searching through local downloads or recreating the same workbook.

Export when needed

Download your spreadsheet work as supported local formats such as .kreosheet, CSV, or basic XLSX exports.

What you can do with KreoSheets

Use KreoSheets for everyday spreadsheet work: quick tables, CSV review, basic workbook editing, common formulas, cloud saving, and exports from one browser-based workspace.

Edit spreadsheet cells

Work with rows, columns, selections, formatting, notes, links, and workbook-style grid editing.

Use common formulas

Use spreadsheet functions such as SUM, AVERAGE, COUNT, MIN, MAX, text formulas, logic formulas, and date helpers.

Import CSV and XLSX files

Open common spreadsheet formats and continue working inside the KreoSheets workspace.

Save to KreoCloud

Keep supported workbook files available from your private workspace when you sign in.

Export spreadsheet work

Download spreadsheet data as CSV, basic XLSX, or internal .kreosheet files.

Work inside Kreotar

Move naturally between spreadsheets, PDFs, documents, boards, and saved cloud files inside one ecosystem.

Export and download foundation

Export is separate from KreoCloud save, so downloading files never changes the canonical cloud state.

Download .kreosheet

Save the exact internal workbook JSON used by KreoSheets.

Export active sheet as CSV

Export the active worksheet values and formulas as UTF-8 CSV.

Export basic XLSX

Create a basic Excel workbook with sheet values and formulas where represented.

Part of the Kreotar office workspace

KreoSheets works alongside KreoPDF, KreoDoc, KreoBoard, and KreoCloud so your spreadsheets, documents, PDFs, boards, and saved files stay connected inside one browser-based productivity ecosystem.

KreoSheets FAQ

Common questions about the KreoSheets online spreadsheet editor and cloud workspace.

What is KreoSheets?

KreoSheets is Kreotar’s free online spreadsheet editor for creating, opening, editing, and saving spreadsheet work in the browser.

Is KreoSheets free to use?

Yes. You can start a blank spreadsheet, open supported local files, and use the KreoSheets workspace for free. Signing in lets you save supported work to KreoCloud.

Can I create spreadsheets online with KreoSheets?

Yes. You can create a blank spreadsheet from the landing page and begin editing cells, rows, columns, formulas, and formatting in your browser.

Can I open CSV files in KreoSheets?

Yes. KreoSheets supports opening CSV files so you can review and edit tabular data inside a browser-based spreadsheet workspace.

Can I open Excel XLSX files online?

KreoSheets supports opening Excel/XLSX files for supported workbook workflows. Some advanced Excel-specific features may not be represented exactly in the browser editor.

Do I need an account to use KreoSheets?

No. You can start working locally without an account. If you want to save supported workbook files to KreoCloud and reopen them later, you can sign in for free.

What happens if I use KreoSheets without signing in?

Unauthenticated work can run as a local draft in the browser. Before you leave, KreoSheets can remind you to sign in so your spreadsheet can be saved to KreoCloud.

Can I save spreadsheets to KreoCloud?

Yes. Signed-in users can save supported KreoSheets workbooks to KreoCloud and reopen them from the KreoSheets workspace.

What is a .kreosheet file?

.kreosheet is KreoSheets’ internal workbook format for preserving supported spreadsheet state separately from export formats such as CSV or XLSX.

Can I export my spreadsheet work?

Yes. KreoSheets supports local export workflows such as .kreosheet, CSV, and basic XLSX export depending on the current workbook state.

Is KreoSheets browser-based?

Yes. KreoSheets runs inside your browser as part of Kreotar’s browser-based productivity ecosystem.

How is KreoSheets connected to KreoPDF, KreoDoc, and KreoBoard?

KreoSheets is part of the same Kreotar office ecosystem as KreoPDF, KreoDoc, KreoBoard, and KreoCloud, helping users work across spreadsheets, PDFs, documents, boards, and saved files.

Start your online spreadsheet work.

Create a blank spreadsheet, open a CSV file, or continue your cloud-backed workbook files in one focused browser workspace.