Skip to content
AppBox

Cron Expression Parser

Translate cron expressions into plain English and preview the next scheduled run times before you deploy.

Works offlineDeveloper

Cron expression

Five fields: minute, hour, day of month, month, day of week. Shorthands like @daily also work.

*/15
Minute
9-17
Hour
*
Day of month
*
Month
1-5
Day of week
This runs
At 09:00, 09:15, 09:30, 09:45, 10:00, 10:15 and 30 more times, on weekdays.

Next runs

Computed in your local timezone. A server usually runs in UTC — check before relying on the times.

Date and timeFrom now
Calculating…

Common schedules

Field reference

FieldRange
Minute0–59
Hour0–23
Day of month1–31
Month1–12 or JAN–DEC
Day of week0–6 or SUN–SAT
One gotcha worth knowing
When both day-of-month and day-of-week are restricted, cron matches either — not both. So 0 0 1 * 1 fires on the 1st of the month and every Monday.

About the cron expression parser

Paste a five-field cron expression to get a plain-English description of when it fires, plus a list of the next runs so you can sanity-check the schedule before it goes anywhere near a server. Each field is validated separately with a clear message when something is out of range, and a set of common presets covers the schedules most jobs actually need.

This tool runs entirely in your browser. Nothing you type is uploaded, and it keeps working with no connection at all — including as an installed app.