Convert data sizes between bytes, KB, MB, GB, TB, and PB. Understand disk space and file sizes in different units. Everything runs locally in your browser — nothing is uploaded.
Compare and convert between A0, A1, A4, Letter, and Legal paper sizes. Understand how many sheets of one size fit into another.
Convert between US, UK, European, and Asian shoe size systems instantly. Includes men's, women's, and children's size charts.
Convert clothing sizes between US/Canada, UK, EU, Japan, and France sizing systems. Supports women's apparel size conversions with international standards.
Analyze JSON payload size, character count, key count, and nesting depth. Understand the size profile of your data.
Reduces PDF file size by compressing embedded images, removing redundant metadata, and optimizing object streams. Three compression tiers let you choose between maximum size reduction and high-quality preservation. Handles PDFs up to 50MB.
1 GB = 1,024 MB. This tool uses binary (base-1024) conventions, which is standard for computing and file systems.
Computers use binary addressing, so memory and storage are measured in powers of 2. 1 KB = 2^10 = 1,024 bytes. The decimal convention (1 KB = 1000 B) is used by some hard drive manufacturers.
A typical plain-text email is about 10 KB (10,240 bytes). With images or attachments, it can be much larger.
A typical HD movie is about 4–5 GB. A 4K movie can be 15–25 GB depending on length and compression.
Yes. All conversions run locally in your browser. No data is uploaded.