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Converters

Switch between units, formats, and encodings in a single click, all in your browser.

52 tools available

Salary ↔ Hourly Converter

Convert a yearly salary to an hourly rate (or the reverse).

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CSV ↔ JSON Converter

Convert between CSV and JSON instantly, in your browser.

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Base64 Encoder / Decoder

Encode and decode Base64 strings in your browser.

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Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes.

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Number to Words Converter

Convert any number into its English word form.

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Roman Numerals Converter

Convert to and from Roman numerals.

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Cooking Measurement Converter

Convert cups, oz, grams, ml, tbsp, and tsp with US and metric options.

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Color Picker from Image

Drop in an image and extract the dominant color palette as hex codes.

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Color Format Converter (HEX / RGB / HSL / CMYK)

Convert any color between HEX, RGB, HSL, and CMYK.

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Temperature Converter (°C / °F / K)

Convert between Celsius, Fahrenheit, and Kelvin — with common reference points.

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Unix Timestamp Converter

Convert Unix timestamps to human dates (and back) in your local time zone.

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Date Format Converter

Convert a date between ISO, US, EU, Unix, and Excel serial formats.

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Print DPI & Resolution Calculator

See how large you can print any image before it goes soft.

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Recipe Scaler (Bake / Cook)

Scale any recipe up or down to your target servings or yield.

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Cake Pan Size Converter

Convert any cake recipe from one pan shape/size to another.

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Dog-to-Human Age Converter

Convert a dog's age to human years with the modern size-adjusted formula.

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Cat-to-Human Age Converter

Convert a cat's age to its equivalent in human years.

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Image Format Converter

Convert PNG, JPG, and WebP images locally.

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Image Resizer

Resize an image to exact dimensions while preserving its ratio.

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Image Compressor

Shrink JPEG and WebP files with visual quality controls.

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Image Cropper

Center-crop images to square, landscape, portrait, or custom ratios.

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Image Rotator

Rotate an image by 90, 180, or 270 degrees.

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Image Flipper

Mirror an image horizontally or vertically.

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Image to Grayscale

Turn any photo or graphic into a grayscale image.

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Sepia Image Filter

Apply an adjustable warm vintage sepia effect.

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Image Blur Tool

Blur an image with an adjustable radius.

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Image Brightness & Contrast

Correct dark, washed-out, or flat images.

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Image Pixelator

Create a blocky pixel-art or mosaic effect.

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Transparent Background Flattener

Place transparent images on a solid background.

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Image Border & Padding Adder

Add colored padding or a clean border around an image.

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Image Watermark Tool

Add a text watermark with position and opacity controls.

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Social Media Image Resizer

Create exact-size images for posts, stories, thumbnails, and covers.

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Image to Data URI

Convert an image file to a copyable Base64 data URI.

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URL Encoder / Decoder

Encode or decode URL components safely.

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HTML Entity Encoder / Decoder

Escape or decode HTML entities without running the markup.

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JSON Lines Converter

Convert JSON arrays to JSONL and JSONL back to JSON.

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CSV to Markdown Table

Turn CSV data into a clean Markdown table.

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Chmod Calculator

Convert Linux file permissions between numeric and symbolic forms.

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Length Converter

Convert metric, imperial, nautical, and typographic lengths.

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Weight & Mass Converter

Convert grams, kilograms, pounds, ounces, stones, and tons.

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Data Size Converter

Convert decimal and binary bytes, KB, MB, GB, KiB, and GiB.

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Speed Converter

Convert mph, km/h, knots, m/s, and pace.

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Pressure Converter

Convert Pa, kPa, bar, psi, atm, and mmHg.

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Area Converter

Convert square units, acres, and hectares.

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Volume Converter

Convert liters, gallons, cubic units, cups, and fluid ounces.

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Energy Converter

Convert joules, calories, watt-hours, BTU, and therms.

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Power Converter

Convert watts, kilowatts, horsepower, and BTU/h.

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Angle Converter

Convert degrees, radians, gradians, turns, and arc units.

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Time Duration Converter

Convert nanoseconds through weeks and years.

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Fuel Economy Converter

Convert MPG, km/L, and L/100 km correctly.

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Kitchen Volume Converter

Convert cups, tbsp, tsp, fl oz, mL, liters for recipes.

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BIP-21 Payment URI Builder

Build a bitcoin: URI with amount, label, and message for QR or wallet sharing.

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