Your Swiss Army Knife for Digital Tasks

250+ free online tools for conversions, calculations, PDF, audio, and more. No signup required. Fast, private, and always free.

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Most used utilities by our community

Kilometers ↔ Miles

Convert between kilometers and miles instantly. Perfect for international travel, running distances, and map calculations.

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Meters ↔ Feet

Convert between meters and feet. Essential for construction, height measurements, and international projects.

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Centimeters ↔ Inches

Convert between centimeters and inches. Perfect for screen sizes, clothing measurements, and crafts.

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Kilograms ↔ Pounds

Convert between kilograms and pounds. Essential for weight tracking, shipping, and cooking.

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Grams ↔ Ounces

Convert between grams and ounces. Perfect for cooking, jewelry, and postal measurements.

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Celsius ↔ Fahrenheit

Convert between Celsius and Fahrenheit. Essential for weather, cooking, and science.

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Base64 Encode/Decode

Encode text to Base64 or decode Base64 strings. Essential for data transmission and APIs.

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URL Encode/Decode

Encode or decode URLs and query strings. Essential for web development and API work.

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JSON Formatter/Validator

Format and validate JSON data. Pretty print minified JSON or validate JSON syntax.

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UUID Generator

Generate random UUIDs (v4) for your applications. Copy with one click.

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UPPERCASE

Convert text to UPPERCASE. All letters become capital letters.

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lowercase

Convert text to lowercase. All letters become small letters.

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All Categories

Browse tools by category

Distance & Length

Convert between different units of distance and length
Weight & Mass

Convert between different units of weight and mass
Temperature

Convert between Celsius, Fahrenheit, and Kelvin
Volume

Convert between liters, gallons, cups, and more
Area

Convert between square meters, acres, hectares, and more
Speed

Convert between KPH, MPH, knots, and more
Time & Date

Timezone conversions, date calculators, and more
String Case

Convert text to different cases
Text Transformations

Reverse, sort, and manipulate text
Text Analysis

Count characters, words, and estimate reading time
List Utilities

Convert, sort, and manipulate lists
Encoding & Decoding

Base64, URL encoding, and more
Hash Generators

Generate MD5, SHA, and other hashes
Number Utilities

Number conversions and calculators
Data Size

Convert between bytes, KB, MB, GB, and TB
Color Utilities

Color conversion and tools
Image Converter

Convert images between JPG, PNG, WebP, and SVG formats
Image Compressor

Compress images - reduce file size without visible quality loss
Image Effects

Apply blur, sharpen, grayscale and adjust quality
Audio Converter

Convert audio between MP3, WAV, OGG, and other formats
PDF Tools

Convert, merge, split, compress, and secure PDF files
SEO Tools

Tools for search engine optimization and web metadata
Developer Tools

JSON, regex, UUID generators, and more
Finance & Currency

Calculators for finance and currency
Health & Fitness

BMI, calorie, and fitness calculators
Miscellaneous

QR codes, passwords, and other tools
Lightning Fast

All calculations happen instantly in your browser. No waiting for server responses.

Privacy First

Your data stays in your browser. We don't store or track your conversions.

Works Everywhere

Fully responsive design. Use on desktop, tablet, or mobile - even offline!