howToCSV - Data Analysis Tools for CSV and Excel: suite of tools designed to help you clean, transform, visualize, and analyze your data with ease. Just upload your CSV or Excel files! All in browser and made to speed up boring spreadsheet things.
A startup from Italy.
This page is designed to help you find out whether HowToCSV is good and if it is the right choice for you.
HowToCSV.com is a privacy-centric “Swiss Army knife” for cleansing and transforming data files (CSV, Excel, JSON).
What makes HowToCSV.com unique? Browser Only: Data processing takes place on your device only; your data never gets uploaded to any server.
Excel On Steroids: Supports millions of rows that will normally crash the standard spreadsheet programs.
Smart Cleansing: More than 50 specialized tools to fix delimiter issues, cleanse files from invisible characters, and execute SQL queries on flat files.
Target users: For data analysts needing fast data “janitor” tasks. Privacy-conscious pros working with sensitive data that cannot be processed via cloud services. For developers who need to convert file formats quickly.
Listed in
Merge
Merge different CSVs
Forecast
Apply forecast to CSVs datasets
Chartize
Generate charts based on CSVs data
Synthetic Scenarios
Generate multi-variate scenarios on data
Query CSV
Use complex SQL queries on multiple CSVs at once
Unpivot
Unpivot CSVs
Filter
Filter CSVs as you go
Conversions
CSV-to-any-format and viceversa
Anonymizer
Anonymize automatically thousands of CSVs rows
+60 tools
More than 60 CSVs manipulations
To ensure privacy and security, all computation occurs client-side, directly on the user's local machine. To achieve this, the entire system uses only client-side technologies, starting with NextJS and extending to WASM modules with in-memory analytics DBs for complex transformations and manipulations: no data ever leaves the user's computer.
"iLovePDF for CSV files": a single place with lots of tiny browser-based utilities for anything you might need to do with tabular CSV data without installing heavy software or writing code. It’s focused on real quick hacks: merge, unpivot, clean, convert, forecast, generate synthetic scenarios, etc. and all in the browser.
Even if you hate CSVs, you'll love what we can do with them!
Zero installs — tools run directly in your browser.
Lots of small focused utilities in one place instead of searching for separate converters or editors.
Free access to basic CSV processing tasks up to a modest file size.
Quick one-off fixes (dedupe, pivot, unpivot, simple transforms) without scripting or spreadsheets.
Folks who work with tabular text data but don’t want to fire up Excel or write scripts. Data analysts, product people, devs doing quick transformations. Students, hobbyists, or anyone needing simple CSV work without local tooling.
It started as a side project by a builder tired of fighting with Excel and separate utilities for simple CSV tasks. Put together ~30 tools from other projects he’d built, wrapped them into one free toolkit, and launched it as ilovecsv.net end of 2025. It gained organic search traction quickly.
We have collected here some useful links to help you find out if HowToCSV is good.
Check the traffic stats of HowToCSV on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
Check the "Domain Rating" of HowToCSV on Ahrefs. The domain rating is a measure of the strength of a website's backlink profile on a scale from 0 to 100. It shows the strength of HowToCSV's backlink profile compared to the other websites. In most cases a domain rating of 60+ is considered good and 70+ is considered very good.
Check the "Domain Authority" of HowToCSV on MOZ. A website's domain authority (DA) is a search engine ranking score that predicts how well a website will rank on search engine result pages (SERPs). It is based on a 100-point logarithmic scale, with higher scores corresponding to a greater likelihood of ranking. This is another useful metric to check if a website is good.
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