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Online Tools. Online tools offer many functions
Power Conversion

Allows convert between various power units, including watt, horsepower, kilowatt, BTU/hour, calorie/second, and more.

Energy Conversion

Allows convert between various energy units, including joule, calorie, watt-hour, kilowatt-hour, electronvolt, and more.

Pressure Conversion

Allows convert between various pressure units, including pascal, bar, atmosphere, psi, torr, mmHg, and more.

Length Unit Conversions

Our simple tool provides quick and accurate conversions, making it easy to measure and understand distances.

Mass and Weight Converter

Quickly calculate the equivalent values for your measurements, whether you're working on a scientific project.

Volume Conversion

Quickly and accurately convert between liters, gallons, quarts, cubic centimeters, and other volume units.

Area Conversion

Easily switch between square meters, square feet, acres, hectares, and more.

Temperature Conversion

Discover the top temperature conversion tools available online.

Speed Conversion

Convert Speed Between Miles, Kilometers, Meters, and More.

Time Conversion

Time Conversion Calculator: Easily Convert Time Units.

Tip Calculator

Tip Calculator: A Simple Guide to Calculating Gratuities.

Percentage Calculator

Percentage can be calculated by dividing the value by the total value, and then multiply.

Love Calculator

Love Calculator: A Fun and Interactive Tool to Gauge Your Compatibility.

About

Free tools online feature. The Free Tools Online feature is a feature that allows users to access and use a variety of free online tools. All the useful tools for your daily life are all optimized by us.

Privacy

We declare and commit to users. Our app does not upload any information you enter. It completely works offline. We do not require any access rights or limit any functionality. We respect users' personal information.

Free

Free for all users and all countries. They do not limit any functions or number of uses. In particular, we do not require login or payment of any fees or actions that prevent users from using this free software.