📅 Crontab Visual Calendar

Visualize and explain cron expressions in plain English. See the next 10 scheduled run times. Paste any cron string to instantly understand it. Free online cron expression visualizer.

Next 10 Runs

Calendar

How to Use

Enter a cron expression

Type any 5-field cron expression (e.g. 0 9 * * 1) or select a preset from the dropdown.

Read the description

The plain-English description updates instantly so you can verify the expression means what you intend.

View the calendar

The next 10 run times and monthly calendar heatmap show exactly when the job will execute.

Frequently Asked Questions

What does this tool show? +

Enter any cron expression (5 fields: minute hour day month weekday) and the tool shows: a human-readable description, the next 10 scheduled run times with exact dates, and a monthly calendar view with heatmap highlighting on days the job would run.

What cron expression formats are supported? +

Standard 5-field cron expressions: * (any), */n (every n), ranges (1-5), lists (1,3,5), and combinations. Special strings like @hourly, @daily, @weekly, @monthly, @yearly are also supported.

How is the heatmap useful? +

The calendar heatmap shows job density visually — darker cells mean more runs that day. For example, */15 * * * * (every 15 min) shows every day darkly shaded, while 0 9 * * 1 (every Monday 9am) shows only Mondays highlighted.

What timezone are the run times shown in? +

Run times are calculated in your local browser timezone. The timezone is shown alongside the run time list so you know which timezone is being used.

What is the difference between this and the Cron Generator? +

The Cron Generator helps you build a cron expression using a visual form. This Cron Visualizer takes an existing expression and shows you exactly when it will run — complementary tools for different parts of the workflow.

Guide : Visualiseur d'Expressions Cron

Qu'est-ce que c'est ?

Le Visualiseur Cron explique les expressions cron en langage naturel et affiche les prochaines dates d'exécution, éliminant les erreurs de planification silencieuses.

Supporte les expressions cron standard (5 champs) ainsi que les extensions avec secondes (6 champs) et les macros comme @daily.

Comment utiliser

Entrez votre expression cron (ex. : 0 9 * * 1-5).
La description en langage naturel s'affiche instantanément.
Consultez les 5 à 10 prochaines exécutions planifiées.
Utilisez le générateur visuel si vous débutez avec cron.

Conseils professionnels

Testez toujours les nouvelles expressions cron dans un environnement de staging avant la production.
Attention aux fuseaux horaires — les jobs cron s'exécutent selon l'heure du serveur.