Elysia Tools

Browse tools, examples, visual explainers, and topic guides from one clear workspace.

Top Categories

Hubs

Language
ZHESPTRUFRDEEN

Elysia Tools

Navigation

Generator

Modern Unique ID Generator

· Last updated：2026-06-23

Generate modern unique identifiers: ULID, NanoID, Snowflake and CUID2. Compare formats, decode ULID timestamps and pick the right ID for your system.

Execution

Run this tool

Fill in the form, run the tool, and review the result in one place.

Samples

Examples that match this tool

Related

Continue with connected tools and hubs

Written by the Elysia Tools team
Right21
Modern19
ID17

Tool usage guide

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Category
Generator
Input types
select, number, text
Output type
text
Sample coverage
4
API ready
Yes

Overview

The Modern Unique ID Generator allows developers to instantly generate secure, collision-resistant, and sortable identifiers including ULID, NanoID, Snowflake, and CUID2. You can customize ID lengths, configure distributed machine parameters for Snowflake IDs, or decode existing ULID strings to extract their embedded timestamps.

When to use

  • When designing database schemas that require URL-friendly, secure, or chronologically sortable primary keys.
  • When configuring distributed systems that need Snowflake IDs with specific worker and datacenter configurations.
  • When debugging or auditing data by extracting creation timestamps directly from existing ULID strings.

How it works

  1. 1Select your preferred identifier format from ULID, NanoID, Snowflake, or CUID2.
  2. 2Adjust generation parameters such as the total count, custom length, or Snowflake-specific worker and datacenter IDs.
  3. 3Click generate to output the list of unique identifiers, or paste a ULID into the decode field to extract its creation timestamp.

Use cases

  • Generating secure, non-sequential API keys or public tokens using NanoID or CUID2.
  • Creating chronologically sortable database keys using ULID to optimize index performance.
  • Simulating distributed ID generation for microservices using custom Snowflake worker configurations.

Examples

1. Generating Sortable Database Keys

Backend Engineer

Background

A backend engineer is setting up a new database table for user activity logs and needs primary keys that sort naturally by time without exposing auto-incrementing integers.

Problem

Generate a batch of 100 chronologically sortable, collision-resistant identifiers.

How to use

Select 'ULID' as the ID format, set the count to 100, and click generate.

Format: ULID, Count: 100

Outcome

A list of 100 lexicographically sortable ULIDs ready to be inserted as primary keys.

2. Extracting Creation Time from a ULID

Database Administrator

Background

An administrator is auditing a suspicious log entry and needs to know exactly when the associated record was created based on its ULID.

Problem

Extract the timestamp from the ULID 01ARZ3NDEKTSV4RRFFQ69G5FAV.

How to use

Paste 01ARZ3NDEKTSV4RRFFQ69G5FAV into the 'Decode ULID' input field.

FAQ

What is the difference between ULID and CUID2?

ULID is lexicographically sortable and contains a timestamp, making it ideal for database indexing, while CUID2 is designed for security, collision resistance, and unpredictability in horizontal scaling.

How do I decode a ULID timestamp?

Paste the ULID string into the decode input field, and the tool will extract and display the exact millisecond timestamp encoded within it.

Can I customize the length of all ID formats?

No, length customization is only supported for NanoID and CUID2. ULID and Snowflake have fixed-length specifications.

What parameters are required for Snowflake IDs?

You can configure the Worker ID (0-1023), Datacenter ID (0-31), and a custom epoch timestamp in milliseconds.

How many unique IDs can I generate at once?

You can generate up to 500 unique identifiers in a single batch.

Home
Tools3201
Samples593
Visualizations465
Viewers103
Hubs233
Tags333
Images, Audio & Video657

Image, audio, and video processing, conversion, and optimization tools

Math, Date & Finance644

Calculators, numerics, date logic, statistics, and finance tools

Design & Color297

Color, layout, graphics, visual styling, and design helper tools

Text & Writing209

Writing, cleanup, formatting, extraction, and text analysis tools

Developer & Web193

Developer utilities, networking, web debugging, and automation helpers

Conversion & Encoding175

Format, file, archive, unit, and encoding conversion tools

FLAC/WAV Source Screening and Evidence Handoff
Self-Hosted Giveaway Widget Review and Embed Handoff
Stripe Promo Code Batch Review and Import Preflight
Batch Photo Culling Review and Editing Shortlist Handoff
UI Screenshot Structure Review and Development Handoff

© 2026 Elysia Tools. All rights reserved.

DocsPricingAboutTerms of ServicePrivacy PolicyCookiesContact
Testing

K6 Modern Performance Testing Tool

Comprehensive K6 performance testing examples including load testing, stress testing, API performance testing, and advanced patterns for modern applications

Java

Android Image Processing Java Samples

Android Java image processing examples including reading/saving images, scaling, and format conversion

Kotlin

Android Image Processing Kotlin Samples

Android Kotlin image processing examples including reading/saving images, scaling, and format conversion

Python

Web Image Processing Python Samples

Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion

Development

UUID Version Generator (v1–v8)

Generate RFC 9562 UUIDs — including the modern v6, v7 and v8 that most generators lack — or decode any UUID back to its version, variant and embedded timestamp.

Development

JavaScript Deobfuscator

Deobfuscate and analyze obfuscated JavaScript code to improve readability and understanding

Development

ULID / NanoID / KSUID / Snowflake ID Decoder

Decode lexically sortable IDs losslessly with BigInt: ULID (Crockford base32), KSUID (base62), NanoID, MongoDB ObjectId, and Discord/Twitter/Sonyflake Snowflakes — with ISO timestamps, raw hex, bit-level field breakdowns and birthday-bound collision probabilities.

Development

UUID Validator

Validate UUID format, detect version, and analyze UUID structure including variant, timestamp, and node information

Decode ULID: 01ARZ3NDEKTSV4RRFFQ69G5FAV

Outcome

The tool decodes the ULID and displays the exact creation timestamp: 2016-07-30 23:54:10.257 UTC.

3. Generating Custom Length NanoIDs for URL Shortening

Full-Stack Developer

Background

A developer is building a URL shortener and needs short, secure, and unpredictable strings to append to the redirect domain.

Problem

Generate 10 secure identifiers with a custom length of 12 characters.

How to use

Select 'NanoID' as the ID format, set the count to 10, and set the length to 12.

Format: NanoID, Count: 10, Length: 12

Outcome

Ten unique 12-character NanoID strings suitable for short URLs.