Generate Custom Dates
Build calendar dates from a start date, a day step and a count. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Generate Custom Dates
- 1. Choose a starting date. Enter the first calendar date in the Start date field. Every following date in the list is calculated by repeatedly adding the day step to this one.
- 2. Set the step in days. Enter the Step (days) between consecutive dates. A step of 1 lists consecutive days, while a step of 7 lists the same weekday every week.
- 3. Set the count and separator. Enter How many dates to produce and choose a Separator such as a newline or comma to match how the destination expects the list to be pasted in.
- 4. Copy the generated dates. Copy the finished list of dates from the output pane and paste it into a spreadsheet, calendar import file or test dataset.
When to use Generate Custom Dates
Generate Custom Dates builds a list of calendar dates from a start date and a fixed day step, which is the simplest way to produce a run of dates without touching a calendar library. It covers cases the preset date sequence tool's month and year units do not.
- Listing every other Friday for a biweekly payroll run. Payroll runs every 14 days starting from a known pay date. Set the step to 14 and generate the year's remaining pay dates to paste into the payroll calendar.
- Filling a spreadsheet with a week's worth of daily dates. A weekly report template needs seven consecutive date headers across the top row. Generate seven dates with a step of 1 and paste them straight into the header row.
- Building fixture data with a fixed date gap. An automated test seeds several database rows that each need a created_at date exactly 3 days apart. Generate the sequence and copy it into the seed script.
- Mapping out a recurring inspection schedule. A facility needs a safety inspection every 30 days from the last inspection date. Generate the upcoming dates and drop them into the maintenance tracker.
Examples
Three consecutive days
Output
2020-01-01 2020-01-02 2020-01-03
About the Generate Custom Dates tool
Generate Custom Dates is a free online tool that works entirely inside your web browser. Build calendar dates from a start date, a day step and a count. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 90 Time utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with 4 settings, including Start date, Step (days), How many dates and Separator, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Does Generate Custom Dates cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Does the generator send anything to a server?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How do I get a different result?
Run the generator again. Each run is computed fresh on your device, and any options you change are applied to the next result immediately.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.