What input phrasing does it understand?

It recognises intervals like every 15 minutes and every 2 hours, times like 9am, 6:30, noon, and midnight, weekday and weekend keywords, individual day names, month names, and ordinals like on the 1st.

What happens if I leave out the time?

If no time is detected the converter defaults to midnight, 00:00, and adds a note so you know to add a time if that is not what you wanted.

How does it handle weekly or monthly?

Weekly defaults to Sunday unless you name a day; monthly defaults to the 1st of the month. Both choices are stated in the note so you can override them.

Why does it warn about day-of-month and day-of-week together?

If you set both, classic cron runs when either matches rather than both. The converter flags this so the result does not surprise you in production.

Is the output a standard 5 field cron expression?

Yes. The output uses the classic Unix order: minute, hour, day-of-month, month, day-of-week, which is accepted by crontab and most schedulers.

Human Text to Cron Expression

From English to cron

Writing cron by hand is error-prone, especially when you only remember the field order roughly. This tool goes the other way from a reader: you describe the schedule in plain English and it builds a valid 5 field cron expression, then explains in one line how it interpreted your words so there are no silent surprises.

How it works

The converter scans your phrase for a few well-defined patterns and fills the five cron fields accordingly. Interval phrases such as “every 15 minutes” or “every 2 hours” map directly to a step expression like */15 * * * *. A clock time, whether 9am, 18:30, noon, or midnight, sets the minute and hour fields. Keywords drive the day fields: “weekday” becomes 1-5, “weekend” becomes 0,6, and named days such as “Monday” become their numbers.

Month names and an ordinal day-of-month such as “on the 1st” are recognised too. Frequency words fill in sensible defaults: “weekly” without a named day becomes Sunday, “monthly” becomes the 1st, and “yearly” becomes January 1.

Every weekday at 9am   ->   0 9 * * 1-5
Every 15 minutes       ->   */15 * * * *
On the 1st at noon     ->   0 12 1 * *

Tips and notes

Be explicit when it matters. If you only say “weekly” the result targets Sunday; add the day name to change it. Setting both a day-of-month and a weekday is allowed, but cron treats them as an OR, so the note will warn you. After generating an expression, paste it into the companion reader tool to confirm it describes exactly the schedule you intended before you ship it.