Random Date Generator: Create Bulk Random Dates in Any Format
Developers, testers, and data analysts frequently need random dates for sample data, unit tests, database seeding, and prototype populations. Manually writing dates is tedious and produces unrealistic clustering.
Our random date generator creates uniformly distributed random dates within any range you specify, in seven common formats — ready to paste into spreadsheets, SQL, JSON, or any other format.
Date generation algorithm:
Common Use Cases
Database seeding: Generate realistic created_at, updated_at, and event timestamps for test data
Unit testing: Create edge case dates (leap years, end of month, year boundaries) for validation
Sample data: Generate realistic birth dates for demo user profiles
Load testing: Create distributed timestamps for simulating user activity logs
Prototyping: Populate UI components with realistic date data
Date Format Reference
ISO (2024-03-15): International standard. Use for APIs, databases, sorting
US (03/15/2024): Common in American applications. Note: MM/DD/YYYY order
EU (15/03/2024): Common in Europe. Note: DD/MM/YYYY order
Long (March 15, 2024): Human-readable. Use in user-facing documents
Timestamp (2024-03-15T14:30:00Z): Full datetime. Use in event logs and APIs
Unix (1710506400): Timezone-independent integer. Use in databases and system programming
Practical Examples
Database test data
- 1.Format: ISO Timestamp
- 2.Range: Past 2 years to today
- 3.Count: 100+
- 4.Use: Paste into SQL INSERT statements or CSV import
User profile birth dates
- 1.Preset: Birth Dates (1990-2000)
- 2.Format: ISO or US format
- 3.Count: Match your user count
- 4.Use: Realistic age distribution for demo data
Frequently Asked Questions
What formats does the random date generator support?
The generator supports: ISO (YYYY-MM-DD), US format (MM/DD/YYYY), EU format (DD/MM/YYYY), Long form (Month DD, YYYY), Short form (Mon DD, YYYY), ISO timestamp (YYYY-MM-DDTHH:MM:SSZ), and Unix epoch seconds. These cover the most common date formats used in software development and data work.
What is Unix epoch time?
Unix epoch time is the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC. It is a timezone-independent way to represent a specific moment in time. Used extensively in databases, APIs, and programming. For example, 1710506400 represents March 15, 2024 14:00:00 UTC.
What is an ISO timestamp?
An ISO 8601 timestamp looks like 2024-03-15T14:30:00Z. The T separates date from time, and Z indicates UTC timezone. This format is the international standard and is used in JSON APIs, databases, and most programming languages. It is unambiguous regardless of locale.
How many dates can I generate at once?
You can generate up to 500 dates at once. This makes the tool suitable for populating test databases, creating sample data sets, and generating large amounts of test data for applications.
Are the dates truly random within the range?
Yes. The tool generates a random millisecond timestamp between the start and end dates, then formats it as requested. Each date within the range has an equal probability of being selected. Note that the same date may appear multiple times in large batches if the range is narrow.
Can I generate random birth dates for test data?
Yes. Use the Birth Dates (1990-2000) preset, or set your own range. This generates random dates within the specified range in your chosen format. Useful for generating test user profiles, demographic data, or sample records for database testing.
What does the Random Timestamps preset generate?
The Random Timestamps preset generates dates from the past year up to today in ISO Timestamp format (YYYY-MM-DDTHH:MM:SSZ). The time component is also randomized, making it useful for generating realistic event logs, transaction records, or audit trail test data.
How do I copy the generated dates?
Click the Copy button in the Generated Dates panel to copy all dates to your clipboard as newline-separated text. You can paste this directly into a spreadsheet, database, or text file. Each date is on its own line.