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Compound interest projectionExplore a fixed-rate savings scenario with monthly compounding and end-of-month deposits.Open tool

Energy, pressure and power converterTranslate an energy, pressure or power quantity between compatible units.Open tool

Resting metabolic rate estimatorEstimate adult resting energy from the stated equation inputs and limits.Open tool

Macronutrient allocation calculatorTurn your chosen calorie allocation and percentages into grams of macronutrients.Open tool

CSV to JSON converterRead a quoted table into JSON records while keeping cells as text.Open tool

Markdown to HTML converterWrite HTML from a small documented Markdown subset and inspect an inert preview.Open tool

Regular expression testerTry a JavaScript pattern against text with bounded worker execution.Open tool

JSON formatter and viewerInspect, compare and explicitly transform a strict JSON value.Open tool

Tiny language playgroundRun the bounded local arithmetic mini-language and inspect its output.Open tool

HTML formatting and inert previewFormat markup, inspect structure or preview a sanitized inert document.Open tool

Structured data converterChoose explicit formats for a bounded document conversion or structural view.Open tool

CSS & JavaScript Formatter & BeautifierFormat CSS or JavaScript source without running that source.Open tool

Text encoding and escapingEncode, decode, escape or unescape text using an explicit context.Open tool

Identifier generatorCreate supported random/time-based identifiers with a chosen batch size.Open tool

Cron expression builderBuild or inspect a five-field cron expression and preview UTC matches.Open tool

Integer and bitwise expressionsEvaluate the supported signed64-bit integer and bitwise syntax.Open tool

Scientific calculatorEvaluate arithmetic and supported scientific functions with explicit angle mode.Open tool

Percentage calculatorFind a percentage of a value, or compare one amount with another.Open tool

Discount calculatorCalculate the remaining price after a stated percentage reduction.Open tool

Length converterCompare a distance using the selected length units.Open tool

Mass converterConvert a mass quantity between the supported unit definitions.Open tool

Area converterTranslate an area between explicitly squared units.Open tool

Volume converterConvert a volume using the listed metric or US liquid definitions.Open tool

Temperature converterConvert a temperature and reject values below absolute zero.Open tool

Speed converterExpress a speed using compatible distance-per-time units.Open tool

Time converterConvert a duration without changing the underlying elapsed time.Open tool

Data-size converterDistinguish bits, bytes and decimal or binary storage units.Open tool

Number-base converterTranslate a bounded integer between bases2through36.Open tool

Kilograms to Grams (kg to g) ConverterExpress kilograms as grams, including fractional kilogram values.Open tool

Grams to Kilograms (g to kg) ConverterExpress grams as kilograms without interpreting the digits as text.Open tool

Kilograms to Pounds (kg to lb) ConverterConvert kilograms to international avoirdupois pounds.Open tool

Pounds to Kilograms (lb to kg) ConverterConvert a decimal pound quantity to kilograms.Open tool

Centimeters to Inches (cm to in) ConverterExpress centimeters as decimal inches using the defined inch.Open tool

Inches to Centimeters (in to cm) ConverterTranslate decimal inches to centimeters.Open tool

Meters to Feet (m to ft) ConverterExpress meters in decimal international feet.Open tool

Feet to Meters (ft to m) ConverterTranslate decimal feet to meters.Open tool

Kilometers to Miles (km to mi) ConverterConvert kilometers to statute miles.Open tool

Miles to Kilometers (mi to km) ConverterConvert statute miles to kilometers.Open tool

Celsius to Fahrenheit (°C to °F) ConverterTranslate a Celsius temperature to the Fahrenheit scale.Open tool

Fahrenheit to Celsius (°F to °C) ConverterTranslate a Fahrenheit temperature to the Celsius scale.Open tool

Liters to Milliliters (L to mL) ConverterExpress a liter quantity as milliliters.Open tool

Milliliters to Liters (mL to L) ConverterExpress a milliliter quantity as decimal liters.Open tool

Kilometers per Hour to Miles per Hour (km/h to mph)Translate kilometers per hour to statute miles per hour.Open tool

Miles per Hour to Kilometers per Hour (mph to km/h)Translate statute miles per hour to kilometers per hour.Open tool

Hours to Minutes (h to min) ConverterExpress decimal hours as minutes.Open tool

Minutes to Hours (min to h) ConverterExpress minutes as decimal hours.Open tool

JSON Formatter & BeautifierInspect strict JSON and write a readable, indented document.Open tool

JSON validatorCheck JSON syntax and the parser’s duplicate-key and numeric constraints.Open tool

JSON minifierRemove JSON layout whitespace after the value passes strict checks.Open tool

JSON value comparisonCompare decoded JSON values and inspect the reported paths.Open tool

JSON document to JSON stringWrap a complete JSON document in one escaped JSON string.Open tool

JSON string to JSON documentRead one quoted JSON string whose contents are a JSON document.Open tool

JSON to YAML converterTranslate supported JSON values to the defined YAML representation.Open tool

YAML to JSON converterTranslate the supported YAML value subset into JSON.Open tool

XML to ordered JSON treeInspect XML as an explicitly ordered JSON node tree.Open tool

JSON records to CSV converterWrite a compatible flat record array as a quoted CSV table.Open tool

CSV to TSV converterTranslate a comma-delimited string table to tab-delimited text.Open tool

XML parser and serializerParse and reserialize bounded XML while retaining mixed-text order.Open tool

YAML syntax checkerCheck the supported YAML syntax and value restrictions.Open tool

Inert HTML layout previewInspect a sanitized HTML layout without executing its scripts or resources.Open tool

HTML structural checkerCheck explicit markup nesting and selected structural errors.Open tool

Static Pug to HTML converterTranslate the supported static Pug subset into HTML markup.Open tool

HTML text escaperEncode characters for an explicit HTML text transformation.Open tool

SQL standard string literal escaperBuild a standard single-quoted SQL string literal; use parameters in real queries.Open tool

Unix timestamp and UTC date calculatorTranslate signed Unix units and strict UTC dates with explicit direction.Open tool

Descriptive statistics calculatorInspect descriptive statistics for a bounded list of finite numbers.Open tool

Color converter and contrast checkerTranslate opaque sRGB colors and inspect an explicit contrast comparison.Open tool

Text counter and list cleanupCount, change case, clean spacing or order lines with explicit options.Open tool

Dummy JSON and CSV test-data generatorCreate clearly synthetic records with bounded fields and row counts.Open tool

Document and storage workbenchSwitch among supported document and storage operations without replacing input silently.Open tool

YAML Formatter & BeautifierSerialize supported YAML values with the documented normalization behavior.Open tool

TOML Formatter & BeautifierSerialize a supported TOML table and review type and comment changes.Open tool

Exact Data Storage ConverterCalculate decimal/binary storage quantities with exact fraction arithmetic.Open tool

XML BeautifierIndent supported element-only XML without reflowing mixed text.Open tool

KB to GB ConverterStart an exact decimal kilobyte-to-gigabyte conversion and choose units explicitly.Open tool

KB to MB ConverterStart an exact decimal kilobyte-to-megabyte conversion.Open tool

MB to KB ConverterStart an exact decimal megabyte-to-kilobyte conversion.Open tool

MB to GB ConverterStart an exact decimal megabyte-to-gigabyte conversion.Open tool

GB to MB ConverterStart an exact decimal gigabyte-to-megabyte conversion.Open tool

GB to TB ConverterStart an exact decimal gigabyte-to-terabyte conversion.Open tool

TB to GB ConverterStart an exact decimal terabyte-to-gigabyte conversion.Open tool

GB to KB ConverterStart an exact decimal gigabyte-to-kilobyte conversion.Open tool

Password generatorGenerate a bounded random password with explicit character choices.Open tool

Passphrase generatorCreate a random multiword passphrase using the pinned word list.Open tool

Hash and HMACCalculate a local digest or HMAC from the supplied text.Open tool

bcrypt hash and verifyHash a password with bcrypt or verify an existing bcrypt hash.Open tool

JPG to PNG ConverterCreate PNG output from supported JPG input, with local validation and an explicit download.Open tool

PNG to JPG ConverterCreate JPG output from supported PNG input, with local validation and an explicit download.Open tool

WebP to JPG ConverterCreate JPG output from supported WEBP input, with local validation and an explicit download.Open tool

JPG to WebP ConverterCreate WEBP output from supported JPG input, with local validation and an explicit download.Open tool

PNG to WebP ConverterCreate WEBP output from supported PNG input, with local validation and an explicit download.Open tool

WebP to PNG ConverterCreate PNG output from supported WEBP input, with local validation and an explicit download.Open tool

GIF to PNG ConverterCreate PNG output from supported GIF input, with local validation and an explicit download.Open tool

BMP to JPG ConverterCreate JPG output from supported BMP input, with local validation and an explicit download.Open tool

SVG to PNG ConverterCreate PNG output from supported SVG input, with local validation and an explicit download.Open tool

SVG to JPG ConverterCreate JPG output from supported SVG input, with local validation and an explicit download.Open tool

Image to PDF ConverterCreate PDF output from supported IMAGE input, with local validation and an explicit download.Open tool

HEIC to JPG ConverterCreate JPG output from supported HEIC input, with local validation and an explicit download.Open tool

HEIC to PNG ConverterCreate PNG output from supported HEIC input, with local validation and an explicit download.Open tool

TIFF to JPG ConverterCreate JPG output from supported TIFF input, with local validation and an explicit download.Open tool

AVIF to JPG ConverterCreate JPG output from supported AVIF input, with local validation and an explicit download.Open tool

JPG to AVIF ConverterCreate AVIF output from supported JPG input, with local validation and an explicit download.Open tool

PNG to AVIF ConverterCreate AVIF output from supported PNG input, with local validation and an explicit download.Open tool

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