UUID & Test Data Generator
Generate UUIDs (v4 or v7) or dummy INSERT statements for seeding test tables. Runs entirely in your browser.
How to use:
- Choose UUID version: v4 (random) or v7 (time-ordered, sortable)
- Generate UUIDs: select count and click "Generate UUIDs"
- Generate test data: define columns (name:type or name:type(params) format)
- Set row count and click "Generate Rows"
- Copy INSERT statements for your database
Dummy INSERT Statements
Column format: name:type or name:type(params)
Supported types
name / first_name / last_name
Random person names
Random email address
date(startYear,endYear)
Random date YYYY-MM-DD
int(min,max)
Random integer
decimal(min,max,places)
Random decimal number
salary(min,max)
Random salary integer
age(min,max)
Random age integer
bool(probability)
true/false with optional probability
uuid
UUID (v4 or v7 based on selection)
sequence / id / auto
Auto-incrementing number
city / state / country / zip
Geographic location values
phone
Random phone number
company
Random company name
product
Random product name
text(words)
Random lorem ipsum text
enum(val1,val2,...)
Pick random from list
UUIDs
UUID v7 embeds a Unix millisecond timestamp, making generated UUIDs sortable by creation time — ideal for database indexes.
About this tool
UUID & Test Data Generator is a free online tool for creating UUIDs (v4 random or v7 time-ordered) and dummy INSERT statements for seeding test tables. Define columns in a simple name:type format and generate realistic fake rows — names, emails, dates, numbers — without touching production data.
- UUID versions
- v4 (cryptographically random) and v7 (time-ordered, sortable by creation time)
- Test data
- Dummy INSERT statements from a name:type column spec
- Output
- UUID list or INSERT statements, ready to copy
- Signup
- Not required
- Processing
- Entirely in your browser — random values come from your device's crypto source
- Difference
- Time-ordered v7 UUIDs plus seed-data INSERT generation in one place
- Price
- Free, no usage limits
Limitations
- Generated rows are fictional placeholders — not real personal data
- UUID v4 uniqueness is probabilistic, not guaranteed; use v7 when sort-by-creation-time matters
UUID Generator — FAQ
Is the UUID & Test Data Generator free?
Yes. The UUID & Test Data Generator is completely free with no signup and no usage limits, like all SqlInt mini tools.
Should I use UUID v4 or v7?
Use v4 for cryptographically random IDs and v7 when IDs should be time-ordered and sortable by creation time.
What test data can it generate?
Dummy INSERT statements from a simple name:type column spec — names, emails, dates, and numbers for seeding test tables.
Does my data leave my browser?
No. Every mini tool processes data locally in your browser — pasted text and uploaded files never leave your device.