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Cron Expression Parser & Generator

Parse, describe in plain text, calculate next execution times, and visually build cron expressions.

minuto hora dia mês dia-da-semana
Human-Readable Schedule:

Every 15 minutes, past every hour from 9:00 through 18:00, every day, every month, Monday through Friday.

5 Fields Breakdown

1
Minute
every 15 minutes
*/15(0-59)
2
Hour
past every hour from 9:00 through 18:00
9-18(0-23)
3
Day of Month
every day
*(1-31)
4
Month
every month
*(1-12 or JAN-DEC)
5
Day of Week
Monday through Friday
1-5(0-7 or SUN-SAT (0/7 = Sunday))
Quick Common Presets

Next 5 Execution Times

1
Fri, Sep 11, 2026
09:00:00 AM
479 mins
2
Fri, Sep 11, 2026
09:15:00 AM
494 mins
3
Fri, Sep 11, 2026
09:30:00 AM
509 mins
4
Fri, Sep 11, 2026
09:45:00 AM
524 mins
5
Fri, Sep 11, 2026
10:00:00 AM
539 mins
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How the Cron Parser Works

Technical architecture and practical engineering workflows

Cron expressions are standard 5-part strings (Minute, Hour, Day of Month, Month, Day of Week) used to schedule recurring tasks in Unix systems, cloud crons, and task runners.

This tool decodes each field into natural plain English and calculates the next exact 5 execution dates and times directly in your browser without contacting any server.

Step-by-Step Execution Guide

1. Input Expression or Use Builder

Type any 5-field cron string or use the interactive visual generator tabs.

2. Read Human Translation

Instantly see the exact human-readable description of when your task will run.

3. Check Next Runs & Copy

Inspect the next 5 execution timestamps and copy the expression with 1 click.

Frequently Asked Questions

Frequently asked technical questions and specs

From left to right: Minute (0-59), Hour (0-23), Day of Month (1-31), Month (1-12 or JAN-DEC), and Day of Week (0-7 or SUN-SAT, where both 0 and 7 are Sunday).
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Espaço Publicitário Responsivo (Google AdSense / Carbon Ads)

Container otimizado com zero impacto no Core Web Vitals (CLS = 0)