Unit Converter
Real-time conversion for length, weight, area, volume, temperature, speed, time, and data
Overview
The Unit Converter is a free tool supporting 8 categories: length, weight, area, volume, temperature, speed, time, and data. It natively supports Japanese traditional units such as tsubo, tatami, and shaku, making it useful for real estate, construction, cooking, and more. All processing is done in the browser, and no data is sent to any server.
How to Use
Select a category
Choose from length, weight, area, volume, temperature, speed, time, or data.
Enter a value and units
Type a number and select the source and target units from the dropdowns.
View the result
The conversion result appears in real time. Copy it with one click.
User Reviews
Shota, Architecture
Being able to convert tsubo and tatami instantly is a huge help when explaining to clients.
Misaki, Cooking Enthusiast
I use this every day to convert ounces and cups to grams for international recipes.
Riley K., Engineer
Data unit conversion is simple and easy to use. No ads is a big plus.
Features
8 Categories
Covers length, weight, area, volume, temperature, speed, time, and data for a wide range of conversions.
Japanese Unit Support
Includes traditional Japanese units such as tsubo, tatami, shaku, ken, ri, monme, kan, go, sho, and to.
Real-Time Conversion
Results appear instantly as you type, providing a seamless experience.
Fully Client-Side
All calculations happen in your browser. No data is ever sent to a server.
FAQ
How accurate are the conversions?
Conversions use IEEE 754 double-precision floating point (JavaScript standard), which is more than sufficient for everyday use.
Is my data sent to a server?
No. All calculations are performed entirely in the browser. No input data is transmitted externally.
What are tsubo and tatami?
Tsubo and tatami (jo) are traditional Japanese area units. 1 tsubo ≈ 3.306 m², and 1 tatami (Edo-ma) ≈ 1.548 m².
What is the temperature conversion formula?
Celsius to Fahrenheit: °F = °C × 9/5 + 32. Celsius to Kelvin: K = °C + 273.15.