Time
Unix Timestamp Converter
Convert between Unix timestamps and dates. Seconds or milliseconds, local time or UTC.
Generators
UUID Generator
Generate UUID v4 identifiers locally with the Web Crypto API.
LocalProcessed locally — identifiers are created in your browser.
Available actions: copy, clear.
UUID v4 via crypto.randomUUID(). 1–100 per click.
Click Generate UUID to create a random UUID v4.
How to use
1. Generate a UUID v4
Click Generate UUID. The UUID generator uses crypto.randomUUID() in your browser. Nothing is sent to a server.
2. Generate several at once
Set the count from 1 to 100, then generate. Each value is a random UUID v4.
3. Copy what you need
Copy one UUID, or copy all. Clear removes the list. Generate again to replace it.
Examples
One random UUID
Leave the count at 1 and generate. You get a single UUID v4 such as 550e8400-e29b-41d4-a716-446655440000.
A batch of identifiers
Set the count to 10 when you need several test IDs. The list stays on this page until you clear or generate again.
Frequently asked questions
- Does this UUID generator send values to a server?
- No. Random UUID v4 values are created locally with the Web Crypto API.
- Is a UUID the same as a GUID?
- People often use UUID and GUID interchangeably. This tool generates UUID version 4 (random). A GUID usually means the same 128-bit identifier in Microsoft documentation, but the names are not identical in every specification.
- Why is there a maximum count?
- Generating a huge list can freeze the tab. V1 allows 1–100 UUIDs per click.
Related tools
Encoding
Base64 Encoder / Decoder
Encode and decode Base64, including Unicode text, locally in your browser.