All Free Tools | ConvKit

Acres to Hectares Converter - ac to ha

Convert acres to hectares. Free acre to hectare calculator for land area and agricultural measurements.

Bar to PSI Converter - bar to psi

Convert bar to PSI pressure. Free bar to PSI calculator for tire pressure and industrial applications.

Base64 to Image Converter - Decode Base64 String

Convert Base64 encoded strings back to images instantly. Supports PNG, JPEG, GIF, WebP. Preview and download decoded ima...

Calories to Joules Converter - cal to J

Convert calories to joules. Free calorie to joule energy converter for physics and nutrition science.

Celsius to Fahrenheit Converter - °C to °F

Convert Celsius to Fahrenheit instantly. Free °C to °F temperature calculator with common temperature table.

Centimeters to Inches Converter - cm to in

Convert centimeters to inches instantly. Free cm to inches calculator with conversion table for common measurements.

Free Online CSV to JSON Converter

Convert CSV data to JSON arrays or objects online. Free, fast, private — all processing in your browser.

Free CSV to XML Converter

Convert CSV data to XML format instantly with our free online converter. First row becomes element names. No signup requ...

Cups (US) to Milliliters Converter - cups to ml

Convert US cups to milliliters. Perfect cup to ml calculator for cooking and baking recipes.

Fahrenheit to Celsius Converter - °F to °C

Convert Fahrenheit to Celsius instantly. Free °F to °C temperature calculator with weather and cooking tables.

Feet to Meters Converter - ft to m

Convert feet to meters instantly. Free ft to m calculator for height, distance, and construction measurements.

Gallons (US) to Liters Converter - gal to L

Convert US gallons to liters instantly. Free gallons to liters calculator for fuel, cooking, and liquid volume.

Gigabytes to Megabytes Converter - GB to MB

Convert gigabytes to megabytes. Free GB to MB calculator for file sizes, storage, and bandwidth.

Gigabytes to Terabytes Converter - GB to TB

Convert gigabytes to terabytes. Free GB to TB calculator for hard drive, SSD, and cloud storage conversions.

Grams to Ounces Converter - g to oz

Convert grams to ounces instantly. Free g to oz calculator perfect for cooking, baking, and postal weights.

Hectares to Acres Converter - ha to ac

Convert hectares to acres. Free hectare to acre calculator for land surveys and real estate.

Free Hex to RGB Color Converter

Convert HEX color codes to RGB, HSL, and HSV. Preview colors in real-time. Free online color conversion tool.

Free HTML to Markdown Converter

Convert HTML to Markdown syntax online. Handles headings, links, images, lists, bold, italic. Free tool.

Image to Base64 Encoder - Convert Any Image

Encode images to Base64 strings for embedding in HTML, CSS, or JSON. Supports PNG, JPEG, SVG, GIF. Copy the encoded stri...

Imperial Gallons to Liters Converter

Convert imperial gallons to liters. Free UK gallon to liter calculator for fuel and liquid measurement.

Inches to Centimeters Converter - in to cm

Convert inches to centimeters instantly. Free inches to cm calculator for screen sizes, height, and measurements.

Inches to Millimeters Converter - in to mm

Convert inches to millimeters. Free inches to mm calculator for precision engineering and manufacturing.

Free Online JSON to CSV Converter

Convert JSON arrays to CSV format online. Download as .csv file. Free, fast, no upload required — all processing in yo...

Free JSON to TypeScript Interface Generator

Generate TypeScript interfaces from JSON data. Auto-detect types, nested objects, arrays. Free online tool.

Free Online JSON to XML Converter

Convert JSON data to well-formed XML documents online. Free JSON to XML transformer with customizable root element.

Free Online JSON to YAML Converter

Convert JSON to YAML format online. Transform JSON data into clean, readable YAML configuration files.

Kilobytes to Megabytes Converter - KB to MB

Convert kilobytes to megabytes. Free KB to MB calculator for file sizes and data transfer.

Kilograms to Pounds Converter - kg to lbs

Convert kilograms to pounds instantly. Free kg to lbs calculator with conversion table and formula.

Kilograms to Stone Converter - kg to st

Convert kilograms to stone instantly. Free kg to stone calculator for UK body weight conversions.

Kilometers to Miles Converter - km to mi

Convert kilometers to miles instantly. Free km to miles calculator for running, driving, and distance conversion.

Knots to Miles per Hour Converter - kn to mph

Convert knots to miles per hour. Free nautical speed converter for sailing, aviation, and weather.

KPH to MPH Converter - km/h to mph

Convert kilometers per hour to miles per hour. Free kph to mph speed converter for travel and sports.

Kilowatt-hours to Joules Converter - kWh to J

Convert kilowatt-hours to joules. Free kWh to J energy converter for electricity and physics calculations.

L/100km to MPG Converter

Convert L/100km to MPG fuel economy. Free liters per 100km to US miles per gallon calculator.

Pounds to Kilograms Converter - lbs to kg

Convert pounds to kilograms instantly. Free lbs to kg calculator with conversion table for common weights.

Pounds to Stone Converter - lbs to st

Convert pounds to stone instantly. Free lbs to stone calculator for UK body weight measurement.

Liters to Gallons (US) Converter - L to gal

Convert liters to US gallons instantly. Free liters to gallons calculator for fuel economy and liquid volumes.

Free Online Markdown to HTML Converter

Convert Markdown to HTML with live preview. Free online Markdown renderer supporting headings, lists, code blocks, table...

Free Markdown to Plain Text Converter

Strip Markdown formatting and get clean plain text. Remove headers, bold, italic, links, images. Free online tool.

Megabytes to Gigabytes Converter - MB to GB

Convert megabytes to gigabytes. Free MB to GB calculator for storage, memory, and file size conversions.

Meters to Feet Converter - m to ft

Convert meters to feet instantly. Free m to ft calculator for height, building dimensions, and distance.

Meters to Yards Converter - m to yd

Convert meters to yards. Free meters to yards calculator for sports, construction, and distance.

Miles to Kilometers Converter - mi to km

Convert miles to kilometers instantly. Free miles to km calculator for running, driving, and distance conversion.

Milliliters to Cups (US) Converter - ml to cups

Convert milliliters to US cups. Free ml to cups calculator for precise recipe conversions.

ML to Fluid Ounces Converter

Convert milliliters to fluid ounces instantly. Free ml to oz calculator for cooking, drinks, and liquid measurements.

Millimeters to Inches Converter - mm to in

Convert millimeters to inches. Free mm to inches calculator for engineering, manufacturing, and precise measurements.

MPG to L/100km Converter

Convert MPG to L/100km fuel economy. Free US MPG to liters per 100 kilometers calculator for car efficiency.

MPH to KPH Converter - mph to km/h

Convert miles per hour to kilometers per hour. Free mph to kph speed converter for driving and aviation.

Number Base Converter - Bin Hex Oct

Convert numbers between binary, octal, decimal, and hexadecimal. Free online number base converter for developers.

Ounces to Grams Converter - oz to g

Convert ounces to grams instantly. Free oz to g calculator with common conversion table for cooking and shipping.

Fluid Ounces to ML Converter

Convert fluid ounces to milliliters instantly. Free oz to ml calculator for recipes, beverages, and liquid conversions.

Fluid Oz to Tablespoons Converter

Convert fluid ounces to tablespoons. Free oz to tbsp calculator for precise recipe measurements.

Pints (US) to Milliliters Converter - pt to ml

Convert US pints to milliliters. Free pint to ml calculator for drinks and recipe conversions.

PSI to Bar Converter - psi to bar

Convert PSI to bar pressure. Free PSI to bar calculator for tire pressure, hydraulics, and industrial use.

Quarts (US) to Liters Converter - qt to L

Convert US quarts to liters. Free quart to liter calculator for cooking and liquid measurement.

Square Feet to Square Meters Converter - ft² to m²

Convert square feet to square meters. Free sq ft to sq m calculator for real estate, flooring, and construction.

Square Meters to Square Feet Converter - m² to ft²

Convert square meters to square feet. Free m² to ft² calculator for apartments, houses, and floor area.

Stone to Pounds Converter - st to lbs

Convert stone to pounds instantly. Free stone to lbs calculator commonly used for body weight in the UK.

Tablespoons to Fluid Oz Converter

Convert tablespoons to fluid ounces. Free tbsp to oz calculator for cooking and baking measurements.

Text Case Converter - Free Online Tool

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more. Free online text cas...

Unix Timestamp Converter - Date to Epoch

Convert between Unix timestamps and human-readable dates. Supports seconds and milliseconds. View current timestamp, con...

Metric Tons to Kilograms Converter - tonnes to kg

Convert metric tons (tonnes) to kilograms. Free tons to kg calculator for shipping and logistics.

Free Unicode / UTF-8 Text Converter

Convert text to Unicode escape sequences, UTF-8 hex, HTML entities, and back. Free online encoding tool.

Free Online Unit Converter

Convert between units of length, weight, temperature, area, volume, speed, and data. Free online unit converter.

Free Online XML to JSON Converter

Convert XML documents to JSON format online. Free XML parser and converter — no data sent to any server.

Free XML to YAML Converter

Convert XML data to clean YAML format with our free online converter. Simple, fast, and browser-based. No signup require...

Free Online YAML to JSON Converter

Convert YAML to JSON format online. Free YAML parser — paste your config and get clean JSON instantly.

Yards to Meters Converter - yd to m

Convert yards to meters. Free yards to meters calculator for sports fields, fabric, and distance.