Unit Converter
Convert between common developer units: data storage, CSS lengths, time, and number bases.
Data Storage Converter
CSS Length Converter
Time Converter
Number Base Converter
Developer Unit Converter
As a developer, you frequently need to convert between different units and number systems. This tool provides quick, accurate conversions for the most common developer scenarios - all running locally in your browser.
Data Storage Units
Understanding data storage units is essential for working with file sizes, database storage, and network transfers:
- Byte (B) - The basic unit of digital information (8 bits)
- Kilobyte (KB) - 1,024 bytes
- Megabyte (MB) - 1,024 KB (1,048,576 bytes)
- Gigabyte (GB) - 1,024 MB
- Terabyte (TB) - 1,024 GB
CSS Units
CSS has several units for sizing elements. Understanding the relationship between them is crucial for responsive design:
- px - Absolute pixel units
- em - Relative to the parent element's font size
- rem - Relative to the root (html) font size (typically 16px)
- pt - Points, commonly used in print (1pt = 1/72 inch)
Frequently Asked Questions
What is the difference between KB and KiB?
KB (kilobyte) can refer to either 1,000 or 1,024 bytes depending on context. KiB (kibibyte) always means exactly 1,024 bytes. This tool uses the binary (1,024) convention, which is standard in computing.
What is the default font-size for rem?
The default root font-size in most browsers is 16px. So 1rem = 16px. However, users can change this in their browser settings, which is why rem is preferred over px for accessibility.
Why use different number bases?
Binary (base 2) is used for low-level computing and bit operations. Octal (base 8) and hexadecimal (base 16) provide compact representations of binary data. Hex is especially common for colors, memory addresses, and file hashes.