All Tools
Browse our free online calculators, converters, and developer tools.
JSON Formatter & Validator
Professional JSON formatter, validator, and beautifier. Format, validate, minify JSON with syntax highlighting. Convert JSON to XML, CSV, YAML instantly.
JSON Compare Tool
Compare two JSON objects and find differences instantly. Upload files, view side-by-side comparison with line numbers and visual diff highlighting.
Text Compare
Compare text, source code, configuration, and text files with side-by-side or unified differences, local file support, and precise word- or character-level highlights.
XML Formatter & Validator
Professional XML formatter, validator, and beautifier. Format, validate, minify XML with syntax highlighting. Convert XML to JSON, CSV instantly.
XML Compare Tool
Compare two XML documents and find differences instantly. Upload files, view side-by-side comparison with line numbers and visual diff highlighting.
Base64 Encoder/Decoder
Encode and decode Base64 text and files online with Unicode, URL-safe Base64, and browser-based processing.
HTML Encoder/Decoder
Encode and decode HTML entities online. Escape HTML for display or attributes and decode entities with browser-based processing.
URL Encoder/Decoder
Encode and decode URLs and query strings online. Supports encodeURIComponent, spaces as plus, and Unicode with browser-based processing.
Hash Generator & Checksum Verifier
Generate SHA-256, SHA-384, SHA-512, and legacy MD5 hashes from text or binary files. Verify checksums with incremental, browser-based file processing.
JWT Decoder & Expiry Inspector
Decode three-part JWT headers and claims, inspect NumericDate values and expiry status locally. Decoding never verifies a signature.
Regex Tester & Replacement Playground
Test JavaScript regular expressions with highlighted matches, capture groups, named groups, replacement previews, and a terminating worker timeout.
SQL Formatter & Beautifier
Format SQL queries online with configurable indentation, keyword casing, and support for popular SQL dialects. Processing runs locally and never executes queries.
Unix Timestamp Converter
Convert epoch timestamps and dates with explicit seconds or milliseconds, UTC and IANA timezone views, batch conversion, and CSV export.
UUID Generator & Validator
Generate cryptographically secure UUID v4 values in batches, validate UUID format and version, and copy identifiers individually or as JSON.
cURL to Code Converter
Convert supported cURL commands into Browser Fetch, Node.js Fetch, Python Requests, or PHP cURL code, with explicit warnings for unsupported options.
Cron Expression Generator & Explainer
Build and explain standard five-field cron schedules, validate expressions, choose an IANA timezone, and preview upcoming run times.
EMI Calculator
Calculate your monthly EMI for home loans, personal loans, and car loans with our easy-to-use calculator.
SIP Calculator
Calculate returns on your Systematic Investment Plan (SIP) investments over time.
Compound Interest Calculator
Calculate compound interest and see how your investments grow over time with detailed year-by-year breakdown.
Loan Calculator
Calculate monthly payments, total interest, and amortization schedule for any loan amount.
Mortgage Calculator
Calculate home loan payments with taxes, insurance, and PMI. Compare different mortgage scenarios.
Retirement Calculator
Plan your retirement savings and estimate how much you need to retire comfortably.
BMI Calculator
Calculate your Body Mass Index (BMI) and find out if you are in a healthy weight range.
Unit Converter
Convert between different units of length, weight, temperature, and volume instantly.
Percentage Calculator
Calculate percentages, percentage increase, decrease, and find what percent one number is of another.
Percent Off Calculator
Find the savings and final sale price for a percentage discount, with common presets and currency formatting.
Unit Price Calculator
Compare two or three products by price per kilogram, litre, or item using compatible quantity conversions.
Square Footage Calculator
Calculate area for common shapes, combine rooms, convert square feet and square meters, and estimate material waste.
Feet & Inches Calculator
Add or subtract feet, inches, and fractions, then see normalized and metric results.
Age Calculator
Find out your exact age in years, months, and days. Perfect for planning birthdays and anniversaries.