📅 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
1
Enter a cron expression
Type any 5-field cron expression (e.g. 0 9 * * 1) or select a preset from the dropdown.
2
Read the description
The plain-English description updates instantly so you can verify the expression means what you intend.
3
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.
Guía: Visualizador de Expresiones Cron
¿Qué es?
Las expresiones cron tienen 5 campos: minuto hora día mes día-semana. Son difíciles de leer — */15 9-17 * * 1-5 (cada 15 min de 9 a 17h en días laborables) requiere práctica. Este visualizador las traduce a lenguaje natural.
Cómo usar
- Pega la expresión cron en el campo de entrada.
- Lee la descripción en lenguaje natural generada.
- Revisa las próximas ejecuciones con fecha y hora exactas.
Consejos
0 0 * * *= medianoche diaria;*/5 * * * *= cada 5 minutos.- Especifica siempre la zona horaria para evitar sorpresas con horario de verano.
- Usa el generador de cron para crear expresiones desde cero.