Base64 Encoder

Free online Base64 encoder. Convert text to Base64 instantly, with optional URL-safe output. Runs 100% in your browser — nothing is uploaded.

Convert any text — including full Unicode and emoji — into Base64. Switch on URL-safe mode to get output you can drop straight into a query string.

Why use this converter

• 100% client-side — your data never leaves your browser
• Free and unlimited, no account required
• Works offline as an installable PWA, on desktop and mobile
• No ads and no tracking

Also known as

base64 encode · encode base64 · text to base64 · base64 encoder online · url safe base64

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