Cron Expression Parser
Paste a cron expression and instantly read what it means in plain English, with a field-by-field breakdown.
| Field | Value | Meaning |
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ToolsSoup's Cron Expression Parser is a free online tool that reads a standard 5-field cron expression and explains exactly when it runs, in plain English, right in your browser. Paste any crontab line and instantly get a human-readable description plus a field-by-field breakdown of the minute, hour, day, month, and weekday — no uploads, no sign-up, and nothing ever leaves your device.
What is a cron parser?
A cron parser takes a compact cron expression — five fields covering minute, hour, day of month, month, and day of week — and translates it into language a human can read. Instead of squinting at 0 9 * * 1-5, you immediately see that it means "at 09:00, on Monday through Friday." It is the inverse of writing cron by hand: you supply the expression, and the parser tells you what schedule it actually represents and whether it is even valid.
How to parse a cron expression online
Reading a cron schedule with ToolsSoup takes just a few seconds:
- Paste your five-field cron expression, such as 30 2 * * 1, into the input box.
- Read the plain-English description that explains exactly when the job runs.
- Check the field-by-field table to see the meaning of each value, then copy the description with one click.
Understanding the five cron fields
Reading left to right, the fields are minute (0-59), hour (0-23), day of month (1-31), month (1-12), and day of week (0-6, where 0 and 7 both mean Sunday). An asterisk matches every value, a slash defines a step like */10 for every ten units, a hyphen sets a range, and a comma lists specific values. The job runs whenever the current time matches all the fields, so 30 2 1 * * fires at 02:30 on the first day of every month.
Why use this cron expression parser?
- 100% free with no ads, sign-up, or usage limits.
- Instant plain-English description of any cron expression.
- Field-by-field breakdown showing what each value means.
- Validates the expression and flags out-of-range or malformed fields.
- Runs entirely in your browser — nothing is uploaded to a server.
- Copy the human-readable description with a single click.
Frequently asked questions
Is this cron parser free?
Yes. Every tool on ToolsSoup is completely free to use, with no account, sign-up, or hidden limits.
How do I read a cron expression?
A cron expression has five fields separated by spaces: minute, hour, day of month, month, and day of week. Paste it here and the parser converts each field into plain English so you can read the schedule at a glance.
What special characters can a cron expression contain?
You can use an asterisk (*) for every value, a hyphen for a range (1-5), a comma for a list (1,3,5), and a slash for a step (*/15). This parser understands and explains each of these.
Does 0 and 7 both mean Sunday in the day-of-week field?
Yes. In standard cron the day-of-week field runs 0-6 from Sunday to Saturday, and 7 is also accepted as Sunday for compatibility with some systems.
What if my expression is invalid?
If the expression does not have exactly five fields or a field is out of range or malformed, the parser shows an error explaining what a valid expression must look like.
Is my data safe?
Absolutely. The expression is parsed locally in your browser using JavaScript, so nothing you enter is ever sent to or stored on any server.