📊 Spreadsheet & data
Convert, compare and validate CSV, Excel and JSON data without installing anything.
All Spreadsheet & data tools
CSV / TSV / JSON / XML converter
Convert tabular data between CSV, TSV, JSON, XML and a Markdown table.
📊CSV delimiter converter
Change a CSV delimiter (input delimiter is auto-detected unless given).
📊CSV cleaner
Trim cells, drop empty rows/columns, normalise headers.
📊Remove duplicate rows
Remove duplicate rows, comparing all columns or chosen key columns.
📊Find & replace across columns
Literal find/replace in all or selected columns.
📊Column splitter
Split one column into several on a delimiter.
📊Column merger
Merge several columns into one.
📊Date & number format converter
Reformat a date column (YYYY, MM, DD, HH, mm, ss, MMM tokens) or a number column (locale-aware).
📊Data anonymizer
Replace sensitive columns with fake values, hashes, masks, shuffles or blanks. The same input value always maps to the same fake value within one run, so joins still work.
📊CSV validator
Check structure (ragged rows, empty/duplicate headers) and optional per-column rules.
📊Spreadsheet comparison
Compare two tables by a key column (or row number). Returns added/removed rows and per-cell changes for highlighting.
📊Excel / CSV / JSON file converterUPLOAD
Convert uploaded .xlsx, .csv or .json files to .xlsx, .csv or .json (first sheet).
About spreadsheet & data tools
Spreadsheets and data files are messy. These tools help you clean, convert and check them quickly, without writing a script. Toolsera has 12 tools in this category, including CSV / TSV / JSON / XML converter, CSV delimiter converter, CSV cleaner, Remove duplicate rows. All of them are free, need no account, and delete uploaded files automatically after processing.
Frequently asked questions
Are the spreadsheet & data tools free?
Yes. Every tool in this category is free to use and needs no sign-up.
Are my files and results private?
Uploaded files are deleted automatically after processing and results are never stored.
What can I do with spreadsheet & data tools on Toolsera?
Convert, compare and validate CSV, Excel and JSON data without installing anything. There are 12 tools in this category, including CSV / TSV / JSON / XML converter, CSV delimiter converter, CSV cleaner, Remove duplicate rows.