Base64 vs Hex Encoding: Which Should You Use?
Compare Base64 and hex encoding: size overhead, readability, use cases in cryptography vs data transfer, and when each format is the right choice.
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Tags: encoding, developer-tools, base64
Base64 vs Hex Encoding: Which Should You Use? Base64 and hexadecimal are both ways to represent binary data as text. They appear throughout software development — in hash outputs, cryptographic keys, binary file contents, and API payloads. Choosing between them affects output size, readability, parsing complexity, and compatibility. Here's a direct comparison. What Each Encoding Does Hex encodes each byte as two hexadecimal digits (0–9, a–f). One byte = two characters. The alphabet has 16 characters, so each character carries 4 bits (log₂(16) = 4). Base64 encodes 3 bytes as 4 characters. The alphabet has 64 characters, so each character carries 6 bits (log₂(64) = 6). One byte = 1.33 characters. Size Overhead This is the most significant practical difference. Hex: 100% overhead Every byte…
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