Text to Base64 Converter
Convert any plain text to Base64-encoded format instantly. Perfect for encoding strings for APIs, data URIs, configuration files, and embedded content. Choose between standard Base64 and URL-safe encoding. Everything runs in your browser.
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Frequently Asked Questions
›What's the difference between standard and URL-safe Base64?
Standard Base64 uses + and / characters, which have special meaning in URLs. URL-safe Base64 replaces + with - and / with _ and removes trailing = padding, making it safe to use in URLs and filenames.
›How much larger is Base64 than the original text?
Base64 encoding increases data size by approximately 33%. A 100-byte input produces about 133 bytes of Base64 output (136 with padding). This overhead is the tradeoff for safe text-based transport.