Smartsheet Row Limit: Max Rows Per Sheet (2026)
Each Smartsheet sheet holds up to 20,000 rows, 500,000 cells, and 400 columns, whichever ceiling you hit first (figures as of 2026). Because the cell cap applies before the row cap, a wide sheet with many columns hits the wall well before 20,000 rows. Attachments added through the app are capped around 30 MB each. Here’s how the limits interact and how to work within them.
The Limits at a Glance
Per sheet
- 20,000 rows maximum
- 500,000 cells maximum (rows × columns)
- 400 columns maximum
The cell cap usually bites first
- At 400 columns, you hit 500,000 cells at just 1,250 rows
- At 25 columns, you can reach the full 20,000 rows (500,000 cells)
Attachments
- Up to ~30 MB per file uploaded through the Smartsheet app (larger files via linked cloud storage)
What Counts Toward Your Smartsheet Limits
A sheet’s ceiling is whichever of the three limits you reach first: rows, cells, or columns. The cell limit is the sneaky one — cells equal rows multiplied by columns, so the more columns you add, the fewer rows fit before you hit 500,000 cells. A narrow tracker with a handful of columns can approach 20,000 rows, but a wide project sheet with 100+ columns caps out at a few thousand rows.
Comments, proofs, and cell history don’t count against the row or cell caps, but attachments consume your plan’s overall storage. Exact numbers vary by plan and change over time, so confirm against the Smartsheet help center.
What Happens When You Hit the Limit
When a sheet reaches 20,000 rows or 500,000 cells, Smartsheet blocks adding new rows and shows a limit message. The existing data stays fully usable — you simply can’t grow that sheet further. The fix is almost always to split the data across multiple sheets and connect them, rather than trying to cram everything into one.
How to Free Up or Add Rows
- Split into multiple sheets — by month, region, project, or status — and roll them up with a report or Data Shuttle.
- Reduce column count to raise how many rows fit under the 500,000-cell cap.
- Archive completed rows to a separate archive sheet instead of keeping them live.
- Use reports to view data across several sheets without merging them into one oversized sheet.
- Move very large datasets to a database or Smartsheet’s data-table features rather than a single grid.
Troubleshooting
What is the maximum number of rows in a Smartsheet sheet?
20,000 rows per sheet, as of 2026 — but the 500,000-cell cap often limits you to fewer if the sheet is wide.
Why can’t I add rows when I’m under 20,000?
You’ve likely hit the 500,000-cell limit. Cells = rows × columns, so a wide sheet reaches that cap well before 20,000 rows.
How many columns can a Smartsheet have?
Up to 400 columns per sheet. At that width, the cell cap limits you to about 1,250 rows.
How big can Smartsheet attachments be?
Files uploaded through the app are capped around 30 MB each. For larger files, attach links from Google Drive, OneDrive, Dropbox, or Box instead.
How do I handle more than 20,000 rows?
Split the data across multiple sheets (by month, region, or project) and combine them in a report or with Data Shuttle rather than forcing one giant sheet.
Quick Reference
| Limit | Maximum |
|---|---|
| Rows per sheet | 20,000 |
| Cells per sheet | 500,000 |
| Columns per sheet | 400 |
| Attachment (via app) | ~30 MB per file |
If juggling rows across Smartsheet, email, and calendar eats your day, an AI assistant like Carly can organize the work straight from your inbox — see the best AI personal assistants and browse integrations.
Related guides: Excel row limit · Airtable record limit · Salesforce storage limit · Dropbox file size limit · Telegram file size limit · Telegram group limit · Webex participant limit
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