Skip to main content
Back to Numbers generators

Numbers

Random Date Generator

Used by developers, writers, and creators worldwide.

A random date generator sounds simple, but getting realistic, spread-out dates across a specific year range is surprisingly tedious to do by hand. This tool lets you set a start year, end year, and count, then pick from five formats — YYYY-MM-DD, DD/MM/YYYY, MM/DD/YYYY, DD Mon YYYY, or full ISO 8601 with time — and produces the whole batch instantly. Developers use it to seed staging databases, populate mock profiles, and test date-picker components without hand-crafting every value. Data analysts and QA testers reach for it when a spreadsheet or bug report needs plausible, varied dates rather than a column of identical timestamps.

Loading usage…

Free forever — no account required

How to use

  1. Choose your options above
  2. Click Generate
  3. Copy your result

Detailed instructions

  1. Set the Start Year and End Year inputs to define the date range you need.
  2. Enter a count to specify how many random dates to generate in one batch.
  3. Choose your preferred date format from the dropdown to match your target system.
  4. Click Generate to produce the list of random dates instantly.
  5. Copy the output and paste directly into your database seed file, spreadsheet, or code.

Use Cases

  • •Seeding a Postgres staging table with realistic user registration timestamps spread across a 10-year window
  • •Generating edge-case dates near year boundaries to stress-test a React date-picker component in Cypress
  • •Populating a Notion or Google Sheets client demo with varied invoice and order dates across 2020–2024
  • •Creating ISO 8601 datetime values for Postman test payloads that exercise a REST API's date validation logic
  • •Filling birthday columns in a CSV fixture file used by a Jest test suite for age-calculation functions

Tips

  • →Match the format to your target system before generating — YYYY-MM-DD works in most SQL databases without any conversion.
  • →For realistic user data, set the start year to 1950 and end year to 2005 to get plausible birthdates for adult users.
  • →Generate a small batch first to visually confirm the format looks right, then increase the count for your full dataset.
  • →Use the ISO 8601 with time format when populating created_at or updated_at columns to avoid database type errors.
  • →To test year-boundary logic, set start and end year to the same value (e.g. 2023) and look for Dec 31 and Jan 1 in the output.
  • →Combine two separate batches with different year ranges to simulate a dataset with an older legacy segment and a recent active segment.

FAQ

how do I generate random dates within a specific year range

Set the Start Year and End Year inputs to define your window, then hit generate. Every date in the output falls within that range — set both fields to the same value if you only need dates from a single year. Dates are sampled uniformly across the full timestamp span, so they spread naturally across all months rather than clustering.

which date format should I use for SQL or JSON

YYYY-MM-DD maps directly to SQL DATE columns and JSON date strings in most databases including Postgres, MySQL, and SQLite. If you need a DATETIME or TIMESTAMP column, choose the ISO 8601 option, which adds hours, minutes, and seconds. Copy the output list straight into your INSERT statement, JSON array, or CSV without reformatting.

why does February appear less often than other months in the output

The generator samples uniformly by Unix timestamp rather than by calendar month, so shorter months like February appear slightly less frequently than 31-day months — which actually mirrors real-world date distributions. If you need equal representation per month, generate a smaller batch targeting each month individually and combine them.