Generate a Unix Time Sequence
Step a Unix epoch timestamp by a fixed number of seconds. Runs entirely in your browser, so your data never leaves your device.
Output
The result appears here as you type.
How to use Generate a Unix Time Sequence
- 1. Set the starting epoch. Enter the first Unix timestamp, in seconds since 1970-01-01, into the Start epoch field. Every following value in the list is derived from this number.
- 2. Set the step in seconds. Enter the Step (seconds) between consecutive timestamps and pick Increasing or Decreasing under Direction. A step of 86400 produces one timestamp per day.
- 3. Set the count and separator. Enter How many timestamps to produce and a Separator such as a newline or comma to match whatever format the receiving system expects.
- 4. Copy the generated epochs. Copy the list of raw Unix timestamps from the output pane and paste it into test data, a seed script or an API request body.
When to use Generate a Unix Time Sequence
Generate a Unix Time Sequence produces a run of epoch timestamps spaced by a fixed number of seconds, which is the native time format for most databases, logs and APIs. It saves hand-computing each value when you need several in a row.
- Seeding a database with hourly event timestamps. A test suite inserts rows that each need a distinct created_at epoch an hour apart. Set the step to 3600 and generate as many timestamps as there are test rows.
- Building sample data for a time-series API. An API mock needs a sequence of second-resolution timestamps to pair with sample metric values. Generate the epoch list first, then zip it with the values in your test script.
- Verifying a webhook's expected timestamp spacing. A payment provider fires webhooks at fixed intervals and you want to confirm your handler tolerates the exact spacing. Generate a matching sequence and feed it through the handler in a test.
- Populating a chart's x-axis without a data pipeline. A dashboard prototype needs plausible epoch values along its time axis before the real backend is wired up. Generate a daily sequence and drop it straight into the mock dataset.
Examples
Daily epochs
Output
1000000000 1000086400 1000172800
About the Generate a Unix Time Sequence tool
Generate a Unix Time Sequence runs as plain JavaScript in your browser tab, with no server behind it. Step a Unix epoch timestamp by a fixed number of seconds. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Time Tools section, 90 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
You can shape the output with 5 settings, including Start epoch (seconds), Step (seconds), Direction and How many timestamps, 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.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Is Generate a Unix Time Sequence free to use?
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?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
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?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
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.