Convert CSV column data types between number, string, integer, and float. Ensure consistent typing across your dataset. Everything runs locally in your browser — nothing is uploaded.
Bidirectional converter between vCard (VCF) and CSV formats. Perfect for importing/exporting address books between any platform or service.
Bidirectional converter between iCalendar (ICS) and CSV formats. Migrate events between Google Calendar, Outlook, Apple Calendar, and spreadsheets.
Converts JSON files to CSV format — APIs, configuration files, and data exchange between web services to spreadsheets, database exports, and data imports. All conversion happens locally in your browser with no file size limits.
Analyze CSV structure — column types, counts, unique values, and empty cells.
Guess the random number between 1 and 100. Get hints if your guess is too high or too low. Everything runs locally in your browser — nothing is uploaded.
Data Type Converter lets you convert CSV column data types between number, string, integer, and float. Ensure consistent typing across your dataset. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Convert CSV column data types between number, string, integer, and float. Ensure consistent typing across your dataset. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Upload a file from your device. Drag and drop or use the file picker to select your document.
Yes. After the initial page load, Data Type Converter runs entirely on your device with no internet connection needed. All processing is done locally.
Convert CSV column data types between number, string, integer, and float. Ensure consistent typing across your dataset. All conversions happen locally in your browser.
Format support depends on the specific converter. Check the tool description for supported input and output formats.
Quality depends on the format pair. Lossless conversions preserve original quality; compressed formats offer adjustable quality.
No artificial limits. Very large files may process slower depending on your device's memory.
Yes. All conversions happen locally in your browser. Files never leave your device.
Column Renamer
Rename CSV column headers in bulk using old:new mapping. Quickly relabel columns for data standardization and reporting.
CSV Format Validator
Validate CSV formatting — detect inconsistent column counts, quoting errors, and malformed rows. Get detailed issue reports.
Data Format Converter
Convert between JSON, CSV, XML, YAML, and TSV data formats. Pick any input and output format — your files never leave your device.
Bulk CSV/Excel to JSON
Convert messy CSV or Excel sheets from clients into clean JSON in one batch. Handles missing values, nested rows, and generates strict JSON schemas for 50+ files at once. Everything runs locally in your browser — nothing is uploaded.