Useful UUID Tools starting points

Jump into a common task, then use the full directory below for more specialized tools.

UUID to Integer Converter UUID to Base64 Converter UUID Timestamp Decoder UUID Validator UUID Collision Probability Calculator Base64 to UUID Converter

14 browser developer tools

UUID Tools

Generate and inspect UUIDs by version without turning one identifier format into a false uniqueness/provenance guarantee.

Choose the developer job first

Start with the task you need—formatting, validation, conversion, inspection, or cryptographic checks—and switch tools only when the format or rule changes.

Generate modern IDs

Use cryptographic UUIDv4 for random identifiers or UUIDv7 for time-ordered identifiers.

UUID GeneratorCreate reusable UUIDv4 output with Web Crypto and verify individual identifiers without a network request.UUID v7 GeneratorCreate modern UUIDv7 values with browser randomness and timestamp context while keeping clock/order guarantees bounded to the local generator.UUID v5 GeneratorCreate RFC-compatible UUIDv5 values locally with SHA-1 over the namespace UUID and UTF-8 name.

Validate & inspect

Normalize UUID text, inspect version/variant bits, and decode v7 timestamp metadata.

UUID ValidatorCheck a UUID in the browser and distinguish syntax/version metadata from uniqueness guarantees.UUID InspectorDecode UUID metadata locally without claiming that an identifier can reveal ownership or provenance.UUID Timestamp DecoderExtract UTC creation-time fields from time-based UUID versions without assuming timestamps exist in random/name-based UUIDs.UUID Format ConverterNormalize valid UUID text and transform only its textual representation without changing the underlying 128 bits.

Convert & batch

Convert UUIDs to integer/Base64 forms, sort lists, or remove duplicates.

UUID to Integer ConverterInterpret UUID bytes as a big-endian unsigned 128-bit integer locally.Integer to UUID ConverterMap a 128-bit integer to 16 bytes and canonical UUID text without assigning semantic version meaning.UUID to Base64 ConverterConvert UUID bytes to compact Base64/Base64URL locally with optional padding.Base64 to UUID ConverterConvert Base64 bytes into a UUID only when the decoded payload is exactly 16 bytes.UUID SorterNormalize UUID text and sort its canonical hexadecimal representation locally; UUIDv6/v7 naturally group by their leading time fields.UUID List DeduplicatorNormalize each valid UUID before deduplication and separately report duplicate and invalid lines.UUID Collision Probability CalculatorEstimate collision probability for a chosen UUIDv4 count or invert a target probability using the standard birthday approximation.

All UUID Tools

UUID Tools

UUID Generator

Generate cryptographically random UUIDv4 values locally in bulk and inspect canonical form, version, variant, and neighboring UUIDv7 workflows.

UUID Tools

UUID Validator

Validate UUID syntax locally across canonical/compact/brace/URN forms and inspect version, RFC variant, nil/max, and v7 timestamp metadata.

UUID Tools

UUID v7 Generator

Generate time-ordered UUIDv7 identifiers locally and inspect the embedded Unix-millisecond timestamp, canonical form, and RFC variant.

UUID Tools

UUID v5 Generator

Generate deterministic name-based UUID version 5 identifiers from a namespace UUID and name.

UUID Tools

UUID Inspector

Inspect UUID canonical form, version, RFC variant, nil/max status, and UUIDv7 timestamp information with local generation shortcuts.

UUID Tools

UUID Timestamp Decoder

Decode standardized timestamps from UUID versions 1, 6, and 7.

UUID Tools

UUID Format Converter

Convert one UUID between canonical, uppercase, braces, URN, and compact hexadecimal forms.

UUID Tools

UUID to Base64 Converter

Encode the raw 16 bytes of a UUID as standard or URL-safe Base64.

UUID Tools

Base64 to UUID Converter

Decode a 16-byte Base64 or Base64URL payload into canonical UUID text.

UUID Tools

UUID to Integer Converter

Convert a UUID's 128 raw bits into one unsigned decimal integer.

UUID Tools

Integer to UUID Converter

Convert an unsigned decimal integer from 0 through 2^128-1 into UUID-shaped text.

UUID Tools

UUID Sorter

Sort valid UUIDs lexicographically in ascending or descending canonical order.

UUID Tools

UUID List Deduplicator

Deduplicate UUID lists across case, braces, URN, compact, and hyphenated text forms.

UUID Tools

UUID Collision Probability Calculator

Estimate birthday-collision probability for UUIDv4 random identifiers with 122 random bits.