Free browser-based utilities that streamline coding tasks with instant text processing, data conversion, and validation capabilities.
Audio File Size Calculator Calculate the exact file size of audio recordings based on format, bitrate, duration, and quality settings. Supports MP3, AAC, OGG Vorbis, WAV, and FLAC with configurable bitrate, sample rate, bit depth, and channel count. Includes a podcast hosting estimator for monthly storage and bandwidth, a quality comparison table showing all bitrates ...
Try the Tool »JSON Flattener & Unflattener Convert nested JSON structures to flat dot-notation key-value pairs, or reverse the process to rebuild nested objects from flat keys. This bidirectional tool handles deeply nested objects, arrays with index notation, custom delimiters, and configurable depth limits — all client-side in your browser. Perfect for working with NoSQL databases, environment variable ...
Try the Tool »Time Zone Converter Convert a date and time across multiple time zones simultaneously. Enter a source date, time, and time zone, then add as many target time zones as needed to see the converted times side by side. Supports 24-hour format toggle and all IANA time zones including DST-aware conversions. How to Use Set your ...
Try the Tool »SVG Pattern Generator Create seamless geometric tile patterns with live preview. Choose from 12 pattern types — dots, lines, grids, hexagons, chevrons, triangles, and more — customize colors, size, spacing, and rotation, then export as SVG code, CSS background, or downloadable SVG file. Everything runs in your browser with instant visual feedback. How to Use ...
Try the Tool »Fake Test Data Generator Generate realistic fake test data with a custom schema. Define your fields (names, emails, UUIDs, addresses, dates, and more), set the row count, and export as JSON, CSV, or NDJSON. Everything runs in your browser — no server processing, no data leaves your machine. How to Use Build your schema using ...
Try the Tool »CSS to JavaScript Style Object Converter Convert CSS declarations to JavaScript style objects instantly, or reverse the process to go from JS back to CSS. Supports five output formats including React inline styles, React Native StyleSheet, styled-components, Emotion, and plain JS objects. Handles vendor prefixes, CSS variables, numeric value detection, and full CSS rule blocks ...
Try the Tool »Torque Converter Convert torque values between 10 different units instantly. Enter a value in any unit and see all equivalents update simultaneously across SI, metric, and imperial groups. Covers Newton-meters, kilonewton-meters, kilogram-force meters, pound-force feet, and more. Includes a reference table of common torque specifications for automotive, bicycle, and industrial applications. How to Use Enter ...
Try the Tool »Angle Converter Convert angles between 7 different units instantly — degrees, radians, gradians, turns, arcminutes, arcseconds, and milliradians. All units update simultaneously as you type. Includes a visual unit circle diagram drawn on canvas, fractional π notation for radians, trigonometric values at the entered angle, and quick-select buttons for common angles. Perfect for math, physics, ...
Try the Tool »Data Storage Unit Converter Convert between data storage units instantly with both SI (decimal) and IEC (binary) systems displayed side by side. Enter a value in bits, bytes, kilobytes, megabytes, gigabytes, terabytes, or any other unit and see all equivalents update in real time. Correctly distinguishes between KB (1000 bytes) and KiB (1024 bytes) — ...
Try the Tool »Cooking Measurement Converter Convert between cooking measurements with ingredient-aware accuracy. Unlike generic unit converters, this tool knows that 1 cup of flour weighs differently than 1 cup of sugar. Select from 55+ common ingredients and convert between cups, tablespoons, teaspoons, fluid ounces, milliliters, grams, ounces, pounds, and more. Includes a recipe scaler, fraction display, oven ...
Try the Tool »Protobuf Text to JSON Converter Convert between Protobuf text format and JSON instantly. Parse Protobuf TextProto (the human-readable text representation of Protocol Buffer messages) into JSON, or convert JSON back into Protobuf text format. Supports nested messages, repeated fields, and configurable indentation. How to Use Select your conversion direction (Protobuf Text → JSON or JSON ...
Try the Tool »Tarot Birth Card Calculator Discover your tarot birth card — the Major Arcana card (or pair) that represents your core personality archetype and life themes. Enter your birthdate and instantly see your birth card pair, personality traits, strengths, challenges, and elemental associations based on traditional numerological calculation. How to Use Enter your birth date using ...
Try the Tool »EAN-13 / UPC-A Barcode Generator Generate scannable barcodes in EAN-13, UPC-A, EAN-8, Code 128, and Code 39 formats. Enter your data, customize dimensions and colors, and download as PNG or SVG. Auto-calculates check digits for EAN and UPC formats. Everything runs in your browser — no server processing. How to Use Enter the barcode data ...
Try the Tool »ISBN Validator & Checksum Checker Validate ISBN-10 and ISBN-13 numbers instantly with precise checksum verification. This tool checks whether an ISBN is mathematically valid, converts between ISBN-10 and ISBN-13 formats, auto-formats with proper hyphenation, and identifies registration groups. Perfect for publishers, librarians, booksellers, and developers working with book metadata. How to Use Enter a single ...
Try the Tool »Prisma Schema Formatter Format your Prisma schema files instantly with proper indentation, column-aligned fields, and consistent styling. This tool applies the same formatting conventions as prisma format — aligning field names, types, and attributes into clean columns — entirely in your browser. Paste messy or inconsistent .prisma schemas and get clean, readable output in one ...
Try the Tool »Dotenv to JSON Converter Convert between .env files and JSON instantly with this bidirectional converter. Paste your .env content to get a clean JSON object, or paste JSON to generate properly formatted KEY=VALUE pairs. Handles quoted values, inline comments, multiline strings, export prefixes, and supports nested JSON output by splitting keys on double underscores (__). ...
Try the Tool »Kubernetes YAML Formatter & Validator Format and validate your Kubernetes manifest YAML files instantly in the browser. Paste any K8s manifest — Deployments, Services, ConfigMaps, Ingress, CronJobs, and more — and get consistent 2-space indentation, optional key sorting, and schema validation against 19 Kubernetes resource types. Catches missing required fields, deprecated apiVersions, selector/label mismatches, and ...
Try the Tool »CSV Column Extractor & Reorderer Extract, reorder, rename, and filter columns from CSV files directly in your browser. Paste CSV data or upload a file, then use drag-and-drop to rearrange columns, checkboxes to include or exclude them, and inline editing to rename headers. Preview the transformed output and download or copy the result as a ...
Try the Tool »X.509 Certificate Parser Parse and inspect X.509 certificates and CSRs from PEM format. Instantly see the subject, issuer, validity dates, serial number, public key details, signature algorithm, SAN (Subject Alternative Names), key usage extensions, and full field breakdown — without uploading the certificate to any server. How to Use Paste your PEM-encoded certificate (beginning with ...
Try the Tool »Cryptographic Nonce Generator Generate cryptographically secure nonces (numbers used once) for CSP headers, OAuth state parameters, CSRF tokens, session IDs, and more. Uses crypto.getRandomValues() for true randomness — no Math.random() fallback. Output in hex, Base64, Base64url, or decimal array format. Everything runs in your browser; nothing is sent to any server. How to Use Select ...
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Scoreboard is a fun way to keep track of your games, all data is stored in your browser. More features are coming soon!
Update: Our latest tool was added on Jun 7, 2026
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