Date Range Generator
Generate sequences of dates by daily, weekly, monthly, or custom step intervals with output as list, CSV, or JSON
Interactive tool
Range and step
What is a Date Range Generator?
A date range generator builds a sequence of dates between a start and end at a configurable step (every day, every week, every 15 minutes, every 3 months, and so on). The output can be a plain list, CSV, or JSON for direct use in spreadsheets, scripts, and code.
How to Use This Date Range Generator
- 1Set start and end dates
- 2Pick a step value and unit (days, weeks, months, etc.)
- 3Choose a date format and output format
- 4Toggle Skip weekends if you only want workdays
- 5Copy or download the resulting list
Key features
Flexible Step Intervals
Step by minutes, hours, days, weeks, months, or years with any positive integer step value
Multiple Output Formats
List, CSV, or JSON to plug directly into spreadsheets, scripts, or code
Custom Date Patterns
Pick from common patterns or use ISO 8601 with timezone offsets
Skip Weekends
Filter Saturdays and Sundays out for working-day-only series
Reverse Direction
Set end before start to generate in descending order
Max Result Limit
Cap output at any size up to 5,000 entries to keep large ranges fast
Copy and Download
Grab the output for clipboard paste or save it as txt, csv, or json
100% Private
Generation runs in your browser. Nothing is uploaded
Why Generate Date Sequences?
Spreadsheets, dashboards, and scripts often need a contiguous list of dates as headers, fixtures, or test data. Typing them by hand is tedious and error prone, especially for long ranges or unusual steps. A generator delivers exactly the shape you need with one click.
Common use cases
- Filling spreadsheet date columns for trackers and reports
- Generating test fixtures and seed data for development
- Building chart axes for time-series dashboards
- Creating SQL IN-clause date lists for queries
- Producing recurring event schedules
- Listing fiscal quarters or month boundaries for reports
- Generating timesheet or attendance day grids
- Backfilling missing days in datasets
Step Units Explained
Days, weeks, months, and years use calendar arithmetic, so monthly steps land on the same day of the month when possible. Minutes and hours use exact time math, useful for fine-grained schedules and CSV exports for time-series databases.
Date Format Reference
The format strings follow date-fns syntax. yyyy-MM-dd is ISO date. yyyy-MM-ddTHH:mm:ssXXX is ISO 8601 with timezone. EEE, MMM d yyyy is human readable like Mon, May 9 2026.
Tips & best practices
Pick CSV for spreadsheets
CSV output includes a header row so the data lands cleanly in any spreadsheet tool
Use JSON for code
JSON arrays paste directly into JavaScript, Python, or any modern language as test fixtures
Use weekly stepping for billing cycles
Weekly stepping gives consistent payday or invoice cycles without month-length surprises
Cap large ranges
A daily range over 10 years is over 3,650 entries. Use the max limit to keep output focused on what you need
Combine with skip weekends for trading calendars
Daily steps plus skip weekends gives a basic trading calendar; subtract holidays manually for full accuracy
Privacy & security
This date range generator runs entirely in your web browser using date-fns. Inputs are never uploaded to any server, stored anywhere, or transmitted. All math happens locally on your device.
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Frequently Asked Questions
What step units are supported?
Minutes, hours, days, weeks, months, and years. Each accepts any positive integer step value, so you can generate every 15 minutes, every 2 weeks, every 3 months, and so on.
How do I generate dates in descending order?
Set the end date earlier than the start date. The generator detects the direction and produces dates from start to end stepping backwards.
Why is my output capped?
The Max results slider limits how many dates are produced to keep the page responsive. The hard maximum is 5,000. Adjust it if you need a larger range or pick a coarser step.
Which output format should I use?
Use List for one date per line in plain text. Use CSV when pasting into a spreadsheet (it includes a header). Use JSON when pasting into code as an array.
How do I get ISO 8601 with timezone offsets?
Pick the yyyy-MM-ddTHH:mm:ssXXX format. The XXX inserts the timezone offset like +02:00 or Z for UTC. Useful for time-series databases and JSON APIs.
Is my data sent to any server?
No. Generation runs entirely in your browser. Inputs are never uploaded, stored, or transmitted to any server.