Free sentiment analysis for your CSV & Excel data.
Sentiment Analyst is a free online sentiment analysis tool. Upload a CSV or Excel file of reviews, comments or survey responses and instantly score every row as positive, neutral or negative — with charts, filters and one-click export. No signup, runs entirely in your browser.
Upload
We auto-detect the column holding your comments — usually 'text', 'comment', or 'review'.
Analyze
A lexicon-based engine scores tone, intensity and negation row by row, instantly in your browser.
Visualize
See a clean breakdown with a pie chart and every comment tagged in a sortable table.
What is sentiment analysis?
Sentiment analysis (also called opinion mining) is a natural language processing technique that classifies a piece of text as positive, negative or neutral. It turns thousands of open-ended comments, reviews or survey responses into a measurable signal you can act on — without reading every single row by hand.
Why use Sentiment Analyst?
- Free and instant — no account, no API keys, no setup.
- Private by design — files are processed locally in your browser and never uploaded.
- CSV & Excel ready — works with .csv, .xlsx and .xls out of the box.
- Visual results — pie chart breakdown plus a filterable, exportable table of scored rows.
Who is it for?
Product teams analyzing customer reviews, researchers coding open-ended survey responses, marketers tracking social comments, support leads triaging tickets, and anyone who needs fast sentiment analysis on a spreadsheet without writing code or learning Python.
Frequently asked questions
How accurate is the sentiment analysis?
Sentiment Analyst uses a tuned lexicon-based engine that handles intensifiers and negation, giving reliable directional sentiment on English text — ideal for review and survey data.
What file formats are supported?
CSV (.csv) and Excel (.xlsx, .xls). The text column is auto-detected.
Is there a row limit?
No artificial limit — performance depends on your device, but tens of thousands of rows are handled comfortably.