Converters - Units, Currency, Data Format & Encoding Tools Online Free

Convert values, units, formats, and encodings in seconds. From temperature, length, weight, and volume conversions to Base64, URL encoding, HTML entities, JSON ↔ CSV, and number system transformations, these tools cover everyday conversion needs for both technical and non-technical users. Engineers, students, developers, and business professionals use these converters to get accurate results without digging through reference tables or using bulky apps. Many tools also include quick comparisons and formula explanations for clarity. Whether you're preparing data, building software, or verifying measurements, these converters offer fast and reliable results across a wide range of domains.

Featured Converters Tools

Featured

Area Converter

Calculate area in square feet, meters, acres, hectares, square kilometers

Convert data sizes between bytes, kilobytes, megabytes, gigabytes, terabytes

Transform distances in meters, feet, inches, yards, kilometers, miles

Convert power between watts, kilowatts, horsepower

Switch pressure units like PSI, Bar, kPa, atm, mmHg

Convert torque between Newton-meters, pound-feet, inch-pounds

Transform measurements across length, weight, temperature, volume and more

Change volume units like liters, gallons, milliliters, cups, tablespoons precisely

Switch between grams, pounds, kilograms, ounces, stones, tons with accuracy

weight

grams

ounces

All Converters Tools

Baking Ingredient Converter

Transform baking ingredients between weight and volume measurements

baking

ingredients

flour

Binary Hex Decimal Converter

Convert between binary, hexadecimal, decimal number systems

binary

hex

decimal

Celsius to Fahrenheit Converter

Shift temperatures between Celsius and Fahrenheit scales accurately

temperature

celsius

fahrenheit

Clothing Size Converter

Transform clothing sizes for US, UK, EU apparel

clothing

size

apparel

Cooking Measurement Converter

Convert kitchen measurements like cups, tablespoons, teaspoons, grams

Transform data transfer rates in bps, kbps, mbps, gbps

Engine Displacement Converter

Change engine displacement between cc, liters, cubic inches

engine

displacement

Feet to Meters Converter

Change feet to meters for height and construction measurements

length

feet

meters

Fuel Efficiency Converter

Switch fuel efficiency between MPG, L/100km, km/L

Convert UK gas mark temperatures to Celsius and Fahrenheit

gas-mark

oven

temperature

Illuminance Converter

Transform illuminance between lux and foot-candles

illuminance

lux

foot-candles

Inches to CM Converter

Convert inches to centimeters for product design

length

inches

centimeters

Showing 1-12 of 21 tools

Converters Mini Guide

What professionals use converters for

Engineers, scientists, developers and businesses rely on converters to transform units, currencies, data formats and measurement systems. Converters eliminate mistakes in calculations and ensure cross-platform compatibility.

Convert measurements between metric and imperial systems

Transform data formats for API integration and analysis

Calculate currency conversions for international business

Convert encodings for proper text display across platforms

Transform coordinate systems for mapping and navigation

Convert number systems for programming and calculations

Why accuracy matters

Accurate conversions prevent calculation errors, maintain data integrity and support decision-making in fields like finance, construction, science and international business. Even small inaccuracies can cause large downstream issues.

Prevents costly errors in engineering and construction projects

Ensures compliance with international standards and regulations

Maintains data integrity across different systems and platforms

Supports accurate financial calculations and business decisions

Reduces risk in scientific research and analysis

Improves reliability of cross-platform applications

How conversion algorithms work

Conversion algorithms apply mathematical formulas or lookup tables to translate values between units, coordinate systems or encoding standards. Calculations follow internationally recognized measurement rules to ensure reliability.

Mathematical formulas based on established conversion constants

Lookup tables for complex or specialized conversions

Coordinate system transformations using matrix calculations

Encoding conversions following international standards

Currency conversions using real-time exchange rates

Unit conversions preserving precision and significant figures

Each algorithm ensures accuracy through validation against known standards and reference values.

When to use unit converters compared to data format converters

Use unit converters for scientific measurements, engineering tasks or everyday calculations. Use data format converters when working with APIs, spreadsheets, codebases or structured datasets.

Use unit converters when:

Converting measurements for engineering projects

Calculating scientific formulas and research data

Converting currencies for international transactions

Transforming coordinate systems for mapping

Use data format converters when:

Preparing data for API integration

Converting spreadsheets to database formats

Transforming data for analysis and reporting

Converting encodings for text processing

Converter Tools - Frequently Asked Questions

Everything you need to know about unit and measurement conversions

What can I convert with unit converter tools?

Unit converters handle length, weight, temperature, volume, area, speed and pressure measurements. They switch seamlessly between metric and imperial systems for international compatibility and professional accuracy.

How do data size converters work?

Data size converters transform bytes, kilobytes, megabytes, gigabytes and terabytes between metric and binary systems. This helps with file sizes, storage capacity and bandwidth calculations for technology professionals.

Why convert cooking measurements?

Cooking converters transform cups, tablespoons, teaspoons, ounces and grams for recipe scaling and ingredient substitution. This ensures consistent results when adapting recipes for different serving sizes or ingredient availability.

What is time zone conversion used for?

Time zone converters help coordinate meetings, schedules and communication across global locations. They handle daylight saving time automatically and ensure accurate timing for international business and travel.

How do number system converters work?

Number system converters transform between binary, hexadecimal, decimal and Roman numerals. This helps with programming, electronics, mathematics and any application requiring different numerical representations.

Why convert clothing and shoe sizes?

Size converters help with international shopping by transforming between US, UK, European and metric sizing systems. This ensures proper fit when ordering apparel or footwear from different countries.

What is fuel efficiency conversion?

Fuel converters switch between MPG, L/100km and km/L for vehicle comparison and trip planning. This helps drivers understand fuel economy across different measurement systems used worldwide.

How do pressure and torque converters work?

Pressure converters handle PSI, Bar, kPa and atmospheric measurements for automotive, weather and scientific applications. Torque converters transform Newton-meters, pound-feet for automotive and mechanical engineering.

Why convert paper sizes?

Paper size converters compare ISO A/B/C series with North American sizes like Letter and Legal. This ensures proper printing and document compatibility across international standards and applications.

What is timestamp conversion used for?

Timestamp converters transform Unix time values to readable dates and vice versa. This helps with logging, database records, system integration and any application requiring time-based data processing.

Popular Workflows for Converter Tools

Step-by-step guides to transform units, formats, and measurements

Convert Measurements for International Projects

Transform measurements between metric and imperial systems for construction, engineering, or international business projects with precise accuracy.

Perfect for: Engineers, construction professionals, international businesses, and project managers.

Steps

1Identify all measurement types that need conversion including length, weight, volume, and temperature.
2Use unit converters to transform measurements from metric to imperial or vice versa with precise calculations.
3Convert coordinate systems using coordinate converters for mapping, GPS, or location-based applications.
4Apply data format converters to transform measurement data for use in different software systems or databases.
5Validate conversions using multiple converter tools to ensure accuracy and catch potential calculation errors.

Prepare Data for API Integration and Analysis

Transform data formats between CSV, JSON, XML, and other structures for seamless integration with APIs, databases, and analysis tools.

Perfect for: Data analysts, API developers, database administrators, and integration specialists.

Steps

1Start with your source data in its current format, whether CSV, JSON, XML, or other structured format.
2Use data format converters to transform the structure into your target format for the receiving system.
3Apply encoding converters to ensure proper character encoding for international characters and special symbols.
4Use number system converters to transform data between decimal, binary, hexadecimal, or other numerical formats.
5Validate the converted data structure and encoding to ensure compatibility with your target system or API.

Calculate Currency and Financial Conversions

Convert currencies, calculate exchange rates, and transform financial measurements for international business and personal finance.

Perfect for: International traders, travelers, financial planners, and global businesses.

Steps

1Identify the currencies and financial measurements that need conversion for your specific use case.
2Use currency converters to get current exchange rates and convert between different national currencies.
3Apply unit converters for financial measurements like interest rates, percentages, and financial ratios.
4Use number format converters to transform financial data between different regional number formatting systems.
5Calculate and verify conversion results using multiple converter tools to ensure accuracy for financial decisions.

Related Collections

Explore curated collections of converters with expert guides, workflows, and best practices.

Measurement Unit Converter Tools

Convert measurement units instantly. Transform length, weight, volume, and area between metric and imperial systems for accurate calculations and international standards.

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Temperature & Time Converter Tools

Convert temperatures and time units instantly. Transform Celsius to Fahrenheit, convert time durations, handle timezones, and work with Unix timestamps for global coordination.

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Digital Data Converter Tools

Convert digital units instantly. Transform data sizes, bandwidth rates, and number systems between bytes, bits, binary, hexadecimal, and decimal for IT and programming tasks.

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Specialized Converter Tools

Convert specialized measurements. Transform cooking units, automotive specs, power ratings, pressure, torque, fuel efficiency, and paper sizes for professional applications.

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Sizing Converter Tools

Convert sizing systems instantly. Transform shoe sizes, clothing sizes, ring measurements between US, UK, EU standards, plus Roman numeral conversions for accurate international shopping.

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Cooking & Baking Measurement Converters

Convert cooking and baking measurements instantly. Transform cups to grams, teaspoons to milliliters, convert gas marks to Celsius/Fahrenheit, and scale recipes with precise ingredient conversions.

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