CSV to XLS converter
Upload a CSV, get a polished XLS back in seconds. StandardsPDF handles the conversion in your browser so your files stay yours.
Convert CSV to XLS
Drop your files to try StandardsPDF. This tool is available in the full workspace.
Keeps rows, columns and cell values intact
Retains number formats so totals still read correctly
Free to try with no account and no watermark
Batch several CSV files in a single conversion
How it works
Convert CSV to XLS in 3 steps
Select the CSV you want to convert
Start the conversion – most finish in seconds
Grab your new XLS, ready to use
Private by default
Files are encrypted in transit and deleted within 60 minutes.
Fast
Most jobs finish in under 10 seconds. No queueing.
No signup on free tier
5 documents per day, no credit card required.
FAQ
Frequently asked questions
How do I convert CSV to XLS?+
Upload your CSV file (or drag it onto the box above), wait a few seconds while StandardsPDF converts it in your browser, then download the XLS. There is nothing to install and no account required.
Is converting CSV to XLS free?+
Yes. CSV to XLS conversion is free on the StandardsPDF free tier – no watermark, no signup, and no credit card. A Pro tier lifts the file-size and daily limits if you need more.
Will the XLS keep the quality of my CSV?+
StandardsPDF aims for the highest fidelity the XLS format allows, so your spreadsheet comes through looking as close to the original as possible. Some format-specific details may adapt where XLS works differently to CSV.
Are formulas kept when I convert CSV to XLS?+
Cell values, rows and columns from your CSV are always preserved. Live formulas carry into the XLS when it supports them, otherwise they become their calculated values.
How long does a CSV to XLS conversion take?+
Most CSV files convert to XLS in a few seconds. Larger or higher-resolution files take a little longer, but there is never a queue on the free tier.
Is my CSV file kept private during CSV to XLS conversion?+
Yes. Your CSV is processed in an isolated worker, never shared, and permanently deleted from our servers within 60 minutes. Most CSV to XLS conversions happen right in your browser.
Do I need to install anything to convert CSV to XLS?+
No. Converting CSV to XLS runs entirely in the browser – no desktop software, no extensions and no account for the free tier.
What is the maximum CSV file size I can convert to XLS?+
Up to 100 MB per CSV on the free tier and 2 GB on Pro. If your CSV is larger, split it first or upgrade for the higher limit.