Free Online Converters & Tools

Fast, accurate online converters for everyday measurements and calculations.

Convert length, weight, volume, temperature and more between US customary and metric units — instantly, in your browser, no signup needed.

Popular Conversions All Converters World Clock

Popular Conversions

The conversions people search for most — each with its own converter, formula, and common values.

Gallons to Liters Converter Convert US gallons to liters Miles to Kilometers Converter Convert miles to kilometers Pounds to Kilograms Converter Convert pounds to kilograms Fahrenheit to Celsius Converter Convert °F to °C Feet to Meters Converter Convert feet to meters Inches to Centimeters Converter Convert inches to centimeters Tip Calculator Tip, total and per-person split for any bill

Converters

Free unit converters for everyday measurements, from cooking to travel to science.

Volume Converter Convert liters, gallons, cups and other volume units. Length Converter Convert inches, feet, meters, kilometers and more. Weight Converter Convert pounds, kilograms, ounces and other weight units. Temperature Converter Convert Celsius, Fahrenheit and Kelvin. Speed Converter Convert mph, km/h, knots, m/s and ft/s. Area Converter Convert square feet, square meters, acres and hectares. Data Converter Convert bits, bytes, KB, MB, GB, TB and PB. Pressure Converter Convert PSI, bar, kilopascals and atmospheres. Energy Converter Convert joules, calories, watt-hours and BTU.

World Clock

Check the current local time and compare time zones across major cities around the world.

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Time Tools

Useful time and clock tools for checking time zones, measuring elapsed time, and setting simple countdowns.

World Clock Check the current time in cities around the world. Stopwatch Measure elapsed time with a simple browser stopwatch. Countdown Timer Set a countdown for tasks, workouts, cooking and more.

Calculators

Everyday calculators for tips, discounts, loans, BMI and more — instant answers in your browser.

Percentage Calculator What is X% of Y, X is what % of Y, percent change. Discount Calculator Sale price and savings from any discount percent. Tip Calculator Tip, total and per-person split for any bill. Age Calculator Exact age in years, months and days from birth date. Date Difference Calculator Days, weeks and months between any two dates. BMI Calculator Body mass index from height and weight, metric or imperial. Loan Payment Calculator Monthly payment, total interest and cost of a loan. Compound Interest Calculator Future value of savings with compounding growth.

Code Generators

Create QR codes and barcodes directly in your browser for links, products, and other everyday uses.

QR Code Generator Create QR codes for URLs and text. Barcode Generator Create scannable barcodes for common product and data formats.

Why Use ToolDeck?

Free to Use

All ToolDeck tools are available without a subscription.

No Installation

Use the tools directly in your browser without downloading software.

Simple and Fast

Designed to help you complete everyday tasks quickly.

Works Across Devices

Use ToolDeck on desktop, tablet, or mobile devices.

About ToolDeck

ToolDeck is a collection of free online tools designed to make everyday tasks easier. From unit and currency conversion to world clocks, timers, QR codes, and barcodes, our goal is to provide simple tools that work directly in your browser.

Learn more about ToolDeck →

Frequently Asked Questions

Are ToolDeck tools free?

Yes. ToolDeck provides free online tools that can be used directly in your browser.

Do I need to install anything?

No. ToolDeck tools are designed to work directly in a modern web browser.

Can I use ToolDeck on my phone?

Yes. The website is designed to work on desktop and mobile devices.

Does ToolDeck require an account?

No account is required to use the available tools.