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Accurately generate random dates within a specified range, ideal for software testing and data simulation.
Generate between 1 and 1000 dates.
Set a date range and click generate
Overview
Understand what the tool solves, how it works, and the boundaries of its data.
Choose a start date, an end date, and how many results to create. With the time option off, each output line is formatted as YYYY-MM-DD. With it on, each line includes hours, minutes, and seconds in a UTC timestamp such as 2026-04-12 08:31:45. The list is generated locally from the supplied date values; it is useful for sample records, test fixtures, and demonstrations.
The inputs represent midnight at the beginning of each selected date. The generator chooses a random millisecond between those two instants, including the endpoint instants, then formats that instant. This distinction matters: with time disabled, the end date is not treated as a full day of possible times. It can appear only if the chosen instant is exactly the end date's midnight, which is extraordinarily unlikely over a long interval.
Each row is drawn independently using a pseudo-random value. A pseudo-random generator produces values that look irregular for everyday tasks; it is not a source of cryptographic randomness or a witnessed drawing. Separate draws can produce the same date or timestamp, and the result order is the order drawn rather than chronological order. The browser method used for the random choice is described by MDN's Math.random reference (checked 2026-09-29); MDN explicitly says it is not cryptographically secure.
Guide
Follow the workflow and verify inputs and outputs with practical examples.
Use the start and end date fields. If the values are reversed, the generator still uses the earlier and later timestamps as the bounds.
Enter a positive whole number. The maximum available count depends on the account tier; the form indicates the current limit. The default count is 10.
Leave “include time” off for date text, or turn it on for UTC text down to seconds. Generate the list, then copy the newline separated output.
For day-level sampling where every calendar day, including the final date, must have a meaningful chance, use a generator designed to choose integer day numbers and verify its endpoint rule. This tool samples milliseconds between midnight timestamps, so it does not evenly select calendar dates as discrete categories.
Use cases
See how the tool fits into real work and everyday tasks.
Create example timestamps for a development fixture, then check how an application parses and displays UTC values. Add fixed boundary cases separately when a test must cover the first or last date.
Use a modest result count to illustrate repeated draws and unordered output. If an exercise requires unique dates, weekdays, or fair selection, apply the relevant rules in a separate verified workflow.
Q&A
Find concise answers to common questions and confusing cases.
Yes. Rows are independent draws, so duplicates are possible and no uniqueness rule is applied.
No. Time output is formatted as UTC. Convert it explicitly if the system receiving the data expects local time.
No. The date input is interpreted at midnight. When time is enabled, the upper bound is midnight at the start of the end date; later times on that date are outside the interval. In date-only mode, the end date can appear only at that exact midnight instant.
No. The display preserves draw order. Sort a copy after generation if the receiving workflow requires ascending dates.
Notes
Review scope, result limitations, and important precautions before use.
This generator is suitable for ordinary sample data, not passwords, security tokens, prize drawings, or a process that must prove fairness. Its pseudo-random output is not cryptographically secure. It does not filter weekends or holidays, guarantee unique values, or ensure that every date in a range appears. For tests of leap days, month ends, or the final day of a range, include explicit fixed test cases rather than relying on a random sample.
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