Encode parameters in a query string
If you need to pass text with spaces or special characters in a URL, use Encode to generate a valid string for query parameters.
Free • No signup • Fast
URL Encoder and Decoder Online
Local operation in your browser. No data is sent to external servers.
Related tools
- Base64 Encoder/Decoder to encode payloads, tokens or strings used in APIs.
- JSON Formatter and Validator to better read JSON payloads and parameters.
- JWT Decoder and Inspector if you are working with tokens inside URLs or OAuth callbacks.
How it works
Encode and decode URLs directly in your browser. Useful for query strings, API parameters, redirects and OAuth callbacks without sending data to external servers.
Practical examples
Handle OAuth redirects and callbacks
When working with OAuth login or redirect URLs, encode or decode parameters to verify they are correct.
Debug URLs from APIs
If you receive a URL-encoded string from an API, use Decode to quickly inspect its content.
FAQ
Is data sent to a server?
No. Encoding and decoding happen locally in your browser.
When should I encode a URL?
When you need to include text, spaces, symbols or URLs inside query strings, redirects, callbacks or API parameters.
Try these tools
VAT Calculator
Add or remove VAT at 22%, 10% and 4%.
Percentage Calculator
Calculate percentages, discounts, increases and decreases.
Margin Calculator
Calculate profit and margin from cost and selling price.
Markup Calculator
Calculate percentage markup from product cost.
Net Salary Calculator
Estimate monthly take-home pay from gross annual income.
Inverse Discount Calculator
Find the original price from a discounted price and discount percentage.
Unit Converter
Convert length, mass, temperature, volume and more.
JWT Decoder
Decode the header and payload of a JSON Web Token in your browser.
LLM Token Estimator
Estimate token usage and approximate cost for AI model prompts.
JSON Formatter
Format, validate and minify JSON directly in your browser.
Base64 Encoder/Decoder
Encode and decode Base64 directly in your browser.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and back.
UUID Generator
Generate UUID v4 identifiers for APIs, databases and tests.