Data Analyst
Processes and visualizes complex data, requiring quick CSV/JSON converters, regex solvers, and statisticians.
Regex Generator
Generate, test, and understand regular expressions instantly with our free online Regex Generator. Build complex regex patterns using natural language or simple visual controls. 100% client-side and privacy-friendly.
Client-Side Large File PII Masker
100% client-side browser anonymizer for large files. Stream CSVs and logs to erase emails, IPs and phone data, with zero server uploads and no input latency.
Web Crypto Key and Pair Generator
100% client-side cryptographic key utility. Generate RSA-PSS, ECDSA, and Ed25519 pairs or AES symmetric keys with instant JWK export.
Variance Calculator
Input your dataset with commas, spaces, or lines to instantly calculate exact sample and population variance with step-by-step mathematical formulas.
Standard Deviation Calculator
Stop squaring deviations by hand. Input your raw data with commas, spaces, or lines to instantly calculate exact sample and population standard deviation with step-by-step formula breakdowns.
Mean Calculator
Stop sorting data datasets by hand. Input your raw numbers with commas, spaces, or lines to instantly calculate the exact mean, median, mode, and range with clear step-by-step sorting guides.
Log Calculator
Free online log calculator to solve logarithms with any base. Easily calculate log base 2, log base 10, and natural log (ln) with step-by-step solutions.
Square Root Calculator
Stop guessing radical values. Input any positive real number to instantly calculate its exact square root, identify perfect squares, and explore the classic step-by-step long division method.
AI API Cost & Token Calculator
Estimate and compare API costs across OpenAI, Anthropic, and Google Gemini. Input your prompt text or token count to calculate input/output expenses instantly.
Random Number Generator
Spin the wheel to get random values from custom ranges: 1, 3, 4, 10, 100 and more for games, contests, decisions and daily use.
Julian Date Calculator
Convert calendar dates to Julian day numbers with our free online Julian Date Calculator. Get accurate results instantly for astronomy, programming, and more.
Percent Calculator
Free online percent change calculator. Easily calculate percentage increase, decrease, difference, and percent error.
Random UUID Generator
Free online random UUID generator. Create instant, unique, secure UUID v4 IDs with one click.
Remove Empty Lines
Free online tool to remove empty lines and blank spaces from text instantly. Clean up lists and content by deleting unnecessary blank lines with one click.
Add Text To Beginning / End of Lines
Free online tool to add text to the start and end of every line instantly. Bulk prepend and append text to lists, lines, and content with one click.
Find Text and Replace
Free online find and replace text tool to instantly search words, replace multiple text strings, and edit content quickly with simple bulk processing.
Json Validator
Free online JSON validator to check JSON syntax, find errors, and verify JSON data validity. Instantly fix and validate JSON code with ease.
Json Formatter
Free online JSON formatter to beautify, minify, validate and format JSON code instantly. Clean and organize JSON data with easy readability.
Base64 Encoder Decoder
Free online Base64 encoder decoder to encode text to Base64 and decode Base64 strings back to original text instantly. Safe, fast, and easy to use.
Line Sorter
Free online line sorter to sort text lines alphabetically, numerically, in reverse or random order. Organize lists quickly with easy one-click text sorting.
Text Cleaner
Free online text cleaner to remove extra spaces, line breaks, special characters & unwanted formatting. Clean, trim & optimize text instantly with one simple click.
Remove Duplicate Lines
Free online tool to remove duplicate lines from text instantly. Clean up lists, remove repeated entries, and deduplicate text content with one click - fast and easy to use.
Unix Time Converter
Free online tool to convert Unix timestamp (seconds/ms) to readable time for Linux/Unix systems. Supports UTC/local time conversion.
Data Storage Converter
Convert GB to MB/KB/TB/PB instantly. Accurate data unit conversion for storage devices & digital files.
Popular Questions
Q: Can I parse confidential client CSV or JSON logs here?
A: Yes. There’s no backend database capturing your inputs, making it fully compliant with data privacy.
Q: Will processing a 10MB text string freeze the page?
A: No, the client-side parsing script is highly optimized to handle heavy rows natively without lagging.
Q: Do these utilities strip out nested characters when sanitizing raw logs?
A: You get complete control. The regex and text tools let you isolate specific data columns without breaking the file structure.