All tools

Convert JSON or NDJSON arrays into CSV with file drop, column reorder, flatten, and Excel BOM.

Convert CSV rows into a JSON array with file drop, header detection, and type inference.

Flatten nested JSON objects into CSV using dot notation column keys.

Validate, pretty-print, and minify JSON with clear parse error messages.

Convert YAML configuration and data files into JSON for APIs and apps.

Convert JSON objects into readable YAML configuration files.

Transform XML documents and API payloads into JSON objects.

Convert JSON objects into XML documents for legacy APIs and integrations.

Convert CSV spreadsheets into YAML lists for configs and DevOps files.

Convert JSON objects into TOML configuration files for Rust, Python, and DevOps tools.

Convert TOML configuration files into JSON for APIs and apps.

Convert numbers between binary, octal, decimal, and hexadecimal bases.

Convert tab-separated values into comma-separated CSV for spreadsheets.

Encode text and strings to Base64 for APIs, tokens, and data transfer.

Decode Base64 strings back to readable text.

Percent-encode strings for safe URL query parameters.

Decode percent-encoded URL strings back to readable text.

Escape HTML special characters for safe rendering in documents.

Pretty-print and minify SQL queries for readability and review.

Format and minify CSS stylesheets for readability or production.

Generate random UUID v4 identifiers for apps, tests, and databases.

Generate SHA-256 hash digests from text for checksums and testing.

Generate placeholder text for mockups, prototypes, and page layouts.

Validate JSON syntax and catch parse errors instantly.

Test regular expressions with live match highlighting and capture groups.

Decode JWT header and payload locally for debugging. Signature not verified.

Convert CSV data into a styled HTML table snippet for emails and web pages.

Build cron schedules visually and copy Unix cron expressions.

Generate secure random passwords and passphrases locally in your browser.

Convert acres to square feet using the standard 43,560 conversion factor.

Convert square feet to acres using the standard 43,560 conversion factor.

Convert square meters to square feet for floor area and property size.

Convert hectares to acres using standard land area conversion factors.

Convert acres to hectares for metric land area measurements.

Convert meters to feet for length, height, and distance measurements.

Convert feet to meters for metric length measurements.

Convert miles to kilometers for travel, running, and map distances.

Convert kilometers to miles for travel and fitness distances.

Convert kilograms to pounds for body weight and shipping.

Convert pounds to kilograms for metric weight measurements.

Convert liters to US gallons for fuel, liquid, and tank volumes.

Convert US gallons to liters for metric liquid volume.

Convert Celsius temperatures to Fahrenheit.

Convert Fahrenheit temperatures to Celsius.

Convert megabytes to gigabytes using binary (1024-based) units.

Convert gigabytes to megabytes using binary (1024-based) units.

Convert inches to centimeters instantly.

Convert centimeters to inches instantly.

Convert square feet to square meters for metric area measurements.

Convert millimeters to inches for precision measurements.

Convert inches to millimeters for metric precision.

Convert yards to meters for metric length measurements.

Convert meters to yards for US customary length.

Convert feet to inches for height and length measurements.

Convert inches to feet for height and length measurements.

Convert ounces to grams for cooking and shipping weights.

Convert grams to ounces for US customary weight.

Convert cubic feet to cubic yards for concrete and bulk materials.

Convert cubic yards to cubic feet for material volume estimates.

Convert Celsius temperatures to Kelvin.

Convert Kelvin temperatures to Celsius.

Convert Fahrenheit temperatures to Kelvin.

Convert Kelvin temperatures to Fahrenheit.

Convert kilobytes to megabytes using binary (1024-based) units.

Convert megabytes to kilobytes using binary (1024-based) units.

Convert gigabytes to terabytes using binary (1024-based) units.

Convert terabytes to gigabytes using binary (1024-based) units.

Convert square meters to acres for land area comparisons.

Convert acres to square meters for metric land area.

Convert millimeters to centimeters instantly.

Convert centimeters to millimeters instantly.

Convert stones to kilograms for body weight.

Convert kilograms to stones for UK body weight.

Convert US cups to milliliters for recipes and liquids.

Convert milliliters to US cups for recipes.

Convert bytes to kilobytes using binary (1024-based) units.

Convert kilobytes to bytes using binary (1024-based) units.

Convert bits to bytes for data size calculations.

Convert bytes to bits for low-level data sizing.

Convert lumber board feet to cubic feet volume.

Convert cubic feet volume to lumber board feet.

Remove duplicate lines from pasted text with case and trim options.

Convert text to uppercase, lowercase, title case, sentence case, or slug case.

Strip blank lines from pasted text lists, logs, and exports.

Trim leading and trailing whitespace from each line of text.

Convert phrases and identifiers to camelCase for code and APIs.

Convert phrases and identifiers to snake_case for code and databases.

Count words, characters, lines, and estimated reading time.

Count characters with and without spaces in pasted text.

Count lines in pasted text, lists, and log excerpts.

Prefix each line with line numbers for review, diffs, and documentation.

Compare two text blocks side by side and highlight line differences.

Analyze rental deals with cap rate, cash flow, DSCR, and cash-on-cash in one dashboard.

Estimate capitalization rate from property value, income, vacancy, and expenses.

Estimate cash-on-cash return from annual cash flow and total cash invested.

Calculate return on investment from net gain and total cost.

Estimate monthly mortgage payment from loan amount, rate, and term.

Calculate LTV ratio from loan amount and property value.

Calculate price per square foot from property price and square footage.

Estimate annual property tax from assessed value and tax rate.

Calculate net operating income from gross rent, vacancy, and expenses.

Calculate gross rent multiplier from property value and annual rent.

Calculate debt service coverage ratio for rental property loans.

Calculate PITI payments, amortization schedules, extra payments, and home affordability.

Calculate percentages, increases, and decreases.

Calculate tips and split bills between people.

Calculate sale prices after percentage discounts.

Calculate profit margin from cost and selling price.

Calculate markup percentage and selling price from cost.

Project compound interest growth over time.

Calculate monthly loan payments and total paid.

Find break-even point for fixed and variable costs.

Estimate board feet for lumber based on dimensions and quantity.

Estimate how many 4x8 drywall sheets you need for a wall area.

Calculate concrete volume in cubic yards for slabs, footings, and pads.

Convert cubic yards of concrete into an estimated count of 80 lb cement bags.

Estimate roof surface area from footprint dimensions and pitch.

Estimate shingle bundles needed from total roof area.

Calculate flooring area with a configurable waste allowance.

Estimate tile count from room size, tile dimensions, and waste allowance.

Estimate mulch volume in cubic yards for garden beds and landscaping.

Estimate gravel volume in cubic yards and approximate weight in tons.

Convert gravel volume in cubic yards to approximate weight in tons.

Convert gravel weight in tons to approximate volume in cubic yards.

Convert mulch volume in cubic yards to approximate weight in tons.

Convert mulch weight in tons to approximate volume in cubic yards.

Convert concrete volume in cubic yards to approximate weight in tons.

Convert concrete weight in tons to approximate volume in cubic yards.

Build campaign URLs with UTM source, medium, campaign, term, and content parameters.

Generate title, description, and Open Graph meta tags for web pages.

Convert titles and phrases into clean URL slugs.

Parse UTM parameters from campaign URLs for review and QA.

Turn keywords and phrases into formatted social media hashtags.

Generate QR codes for URLs and campaign content.

Preview Open Graph fields for social link sharing.

Generate Twitter Card meta tags for social sharing.

Generate robots.txt files for search engine crawlers.

Convert Markdown documents to HTML markup.

Convert HTML snippets into Markdown text.

Count words, characters, and lines in document text.

Convert plain text into a downloadable PDF.

Combine multiple PDF files into one document with reorder and local processing.

Split PDF pages by range or into separate files — processed locally in your browser.

Convert PNG images to JPG for smaller file sizes. HEIC/HEIF also supported.

Convert JPG images to PNG format.

Convert PNG images to multi-size ICO favicon files.

Rasterize SVG graphics to PNG at custom sizes.

Resize images to exact width and height dimensions.

Reduce image file size with adjustable JPEG quality.

Generate a favicon bundle with PNG sizes and ICO file.

Calculate print DPI from pixel and print dimensions.

Convert times between global IANA time zones.

Calculate exact age from birth date.

Find days and hours between two dates.

Convert Unix timestamps to readable dates and back.

Count business days between two dates.

Count down to a target date and time.

Convert HEX colors to RGB and HSL values.

Check WCAG contrast ratios for text and backgrounds.

Create CSS linear gradient backgrounds.

Generate consistent spacing scales for design systems.

Convert rem units to pixels at any base font size.

Convert pixel values to rem for responsive CSS.

Scale recipe ingredients up or down by servings.

Convert cup measurements to grams by ingredient.

Convert tablespoons to milliliters.

Convert Fahrenheit and Celsius oven temperatures.

Calculate recipe scale multiplier for guest count.

Convert common cooking volume units.

Calculate body mass index with category range and healthy weight guidance.

Estimate daily calories and TDEE based on age, activity, and weight goals.

Calculate daily protein, carbs, and fat targets from calories and diet style.