2025-01-15
QUICK RANGE:
Ready to generate
Set a date range and click Generate// produce arrays of dates in any format
Generate an array of dates in any format for a given range. Export as JSON, CSV, plain text, or PHP array. Free browser-based date range tool.
2025-01-15
Ready to generate
Set a date range and click GenerateEnter a start and end date, or use a Quick Range shortcut like "This Month".
Choose a date format preset or type a custom PHP date() string. Set the step interval (every day, week, month, etc.).
Click Generate, then copy the output or download it as a file in your chosen format.
The Date Range Generator produces an ordered array of dates between two points in time. Specify any PHP date() format, choose your step interval, and export in JSON, CSV, plain text, PHP array, or JavaScript array format. Useful for seeding databases, generating test data, building calendar views, or any workflow that needs a structured list of dates.
This tool uses PHP date() format characters: Y (4-digit year), m (month 01-12), d (day 01-31), D (Mon-Sun), l (Monday-Sunday), F (January-December), j (day without leading zero), U (Unix timestamp). Combine them freely, e.g. Y-m-d, d/m/Y, l, F j, Y.
The tool generates up to 3,650 dates per run to keep output manageable. For example, a daily range spanning 10 years hits this limit. Use a larger step (weekly or monthly) if you need a wider range with fewer entries.
You can export as a JSON array (ready for APIs), CSV (one date per row, importable into Excel or databases), plain text (newline-separated), PHP array (valid PHP syntax with $dates = [...]), or JavaScript array (valid JS with const dates = [...]).
Yes. Select the Unix preset or type U in the format field. The output will be integer Unix timestamps (seconds since epoch) instead of formatted date strings. Useful for API payloads and database storage.
You can step by Day, Week, Month, Year, or Hour. The "Every N" field lets you skip intervals — for example, "Every 2 Weeks" or "Every 3 Months". All intervals use PHP's DateInterval under the hood.
Yes. PHP's DateTime handles edge cases like leap years (Feb 29) and month-end overflow automatically. A monthly step from Jan 31 will land on Feb 28 (or 29 in a leap year), then Mar 31, following standard calendar rules.
The generation logic runs server-side via a lightweight PHP endpoint on the same domain. No date data is stored, logged, or shared. The endpoint processes your request and immediately returns the result.
Yes. Select the ISO 8601 preset which uses the format string Y-m-d\TH:i:s, producing output like 2025-01-15T00:00:00. This format is compatible with most APIs, databases, and programming languages that follow the ISO standard.
A date range generator is a tool that produces a structured list — or array — of dates between a specified start and end point. Instead of manually writing out every date in a sequence, you define the boundaries and the interval, and the tool generates the complete list for you. This is an essential utility for developers, data analysts, and anyone who works with time-series data regularly.
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Date arrays appear constantly in software development: seeding a database with sample records, generating fiscal quarters for a reporting dashboard, creating test fixtures for date-sensitive business logic, or building out the navigation for a calendar view. Writing these by hand is error-prone — it's easy to miscalculate leap years, miss a month-end transition, or accidentally skip a day. A reliable generator eliminates these mistakes entirely.
This tool uses PHP's date() format syntax, which is both expressive and widely understood. Here are the most common format characters:
Y — Four-digit year (2025)y — Two-digit year (25)m — Month with leading zero (01–12)n — Month without leading zero (1–12)F — Full month name (January–December)M — Abbreviated month name (Jan–Dec)d — Day with leading zero (01–31)j — Day without leading zero (1–31)D — Abbreviated weekday (Mon–Sun)l — Full weekday name (Monday–Sunday)U — Unix timestamp (seconds since Jan 1, 1970)N — ISO numeric weekday (1 = Monday, 7 = Sunday)W — ISO week number of the yearYou can combine these freely with separators like -, /, spaces, or commas. For example, l, F j, Y produces output like Wednesday, January 15, 2025.
JSON Array: A standard JSON array like ["2025-01-01","2025-01-02",...]. Paste directly into API payloads, JavaScript files, or configuration files. Compatible with every modern programming language's JSON parser.
CSV: One date per line, no headers. Ideal for importing into spreadsheet applications like Excel or Google Sheets, or for bulk-inserting into a database using a CSV import command.
Plain Text: Newline-delimited dates. Useful for shell scripts, grep operations, or anywhere you need a simple line-by-line list without any array syntax overhead.
PHP Array: Valid PHP syntax — $dates = ["2025-01-01", "2025-01-02", ...];. Copy directly into your PHP files. No parsing required; it's immediately usable code.
JavaScript Array: Valid JS — const dates = ["2025-01-01", "2025-01-02", ...];. Drop it into any frontend or Node.js project without modification.
The step interval controls how many time units are skipped between each entry. Daily steps are the default and most common. Weekly steps are useful for weekly report data. Monthly steps are common for financial projections or subscription billing cycles. Yearly steps work well for long-range planning or historical data exports.
Month-end arithmetic deserves special mention. When stepping monthly from a date like January 31, PHP's DateInterval correctly adjusts to the last valid day of each subsequent month — February 28 (or 29 in a leap year), then March 31, April 30, and so on. This behavior matches what you'd expect from calendar software, and avoids the "overflow" bugs that plague hand-rolled date loops.
Database seeding is one of the most frequent applications. When building a new application, you often need to populate a created_at or date column with realistic values spanning months or years. Generating a date array and inserting it with a simple loop is far faster than writing migration scripts by hand.
Analytics dashboards frequently need a "complete" date series — even on days with no data, the chart should show a zero point rather than a gap. Generating the full date range first, then left-joining it against your actual data, is a standard SQL and BI pattern.
Automated test suites benefit from structured date fixtures. Instead of hardcoding a handful of dates, generate a full range covering multiple months and verify that your business logic handles every case correctly.
Calendar and scheduling applications need to enumerate dates for rendering month views, week pickers, and availability grids. A date range generator provides the backbone array that the UI maps over.
The Unix timestamp format (U) outputs integer seconds since the Unix epoch (January 1, 1970 00:00:00 UTC). This is the most universally compatible format for storing dates in databases and transmitting them in APIs, since it's timezone-agnostic and requires no parsing.
ISO 8601 (Y-m-d\TH:i:s) is the international standard for date-time representation. Output looks like 2025-01-15T00:00:00. It's the default format for most REST APIs, JavaScript's Date.toISOString(), and database timestamp columns in PostgreSQL, MySQL, and SQLite.
Always store dates in UTC and convert to local time only at the display layer. When exporting date arrays for use in multiple timezones, prefer Unix timestamps or ISO 8601 UTC strings (2025-01-15T00:00:00Z) over localized formats. This prevents ambiguity during daylight saving time transitions.
For database seed data, use a format that matches your column type exactly. MySQL DATE columns expect YYYY-MM-DD; DATETIME columns expect YYYY-MM-DD HH:MM:SS. Generating in the right format from the start avoids cast errors during import.