Encode & decode URLs and URI components — with percent-encoding breakdown
Free URL encoder and decoder. Encode special characters for URLs, decode percent-encoded strings, and encode/decode individual URI components. This tool is built for practical, real-world usage where speed, clarity, and reliable output matter. You can start with the default values, review the result, and then refine inputs step by step to match your exact scenario.
For best results, keep your inputs clean and complete. Double-check units, date ranges, and value formats before you calculate. If you are comparing multiple scenarios, change one variable at a time so you can clearly understand what moved the output.
This page helps when you need a quick answer without switching apps, creating accounts, or installing software. It is suitable for professionals, founders, students, and teams who want transparent logic and immediate outputs.
The tool is designed for guidance and operational calculations. For compliance-critical submissions or legal/financial filings, always verify with your official source rules and current regulations. We regularly improve these pages so they remain practical and dependable for day-to-day work.
You can also explore related tools from the full directory at /tools and, where available, automate similar workflows using our API services.
URL encoding (percent-encoding) replaces unsafe characters with a % followed by two hex digits. For example, a space becomes %20 and & becomes %26. This ensures special characters are transmitted correctly in URLs.
encodeURI encodes a full URL but preserves characters like :, /, ?, #, &. encodeURIComponent encodes everything except letters, digits, and - _ . ~ making it suitable for encoding query parameter values.
URL-encode when passing user input as query parameters, when building API requests with special characters, or when including non-ASCII characters (like Unicode) in URLs.
Purpose: Encode special characters for URLs and decode percent-encoded strings.
Free URL encoder and decoder. Encode special characters for URLs, decode percent-encoded strings, and encode/decode individual URI components.
This dev tool page is maintained to help users make better decisions with transparent inputs, reproducible outputs, and practical interpretation guidance.