Free developer tools

Cron expression tools

Build, decode and explain cron expressions, with a live preview of the next run times.

Open the cron generator & explainer →

• Cron for every minute * * * * *
• Cron for every 5 minutes */5 * * * *
• Cron for every 10 minutes */10 * * * *
• Cron for every 15 minutes */15 * * * *
• Cron for every 30 minutes */30 * * * *
• Cron for every hour 0 * * * *
• Cron for every 2 hours 0 */2 * * *
• Cron for every 6 hours 0 */6 * * *
• Cron for every 12 hours 0 */12 * * *
• Cron for every day at midnight 0 0 * * *
• Cron for every day at noon 0 12 * * *
• Cron for every day at 9am 0 9 * * *
• Cron for every weekday at 9am 0 9 * * 1-5
• Cron for every monday at 9am 0 9 * * 1
• Cron for every weekend at 9am 0 9 * * 6,0
• Cron for first of every month 0 0 1 * *
• Cron for every friday at midnight 0 0 * * 5
• Cron for every sunday at midnight 0 0 * * 0
• Cron for every year on jan 1 0 0 1 1 *
• Cron for every quarter 0 0 1 1,4,7,10 *
• Cron for every 2 minutes */2 * * * *
• Cron for every 3 minutes */3 * * * *
• Cron for every 20 minutes */20 * * * *
• Cron for every 45 minutes */45 * * * *
• Cron for every 3 hours 0 */3 * * *
• Cron for every 4 hours 0 */4 * * *
• Cron for every 8 hours 0 */8 * * *
• Cron for every day at 1am 0 1 * * *
• Cron for every day at 2am 0 2 * * *
• Cron for every day at 3am 0 3 * * *
• Cron for every day at 4am 0 4 * * *
• Cron for every day at 5am 0 5 * * *
• Cron for every day at 6am 0 6 * * *
• Cron for every day at 7am 0 7 * * *
• Cron for every day at 8am 0 8 * * *
• Cron for every day at 10am 0 10 * * *
• Cron for every day at 11am 0 11 * * *
• Cron for every day at 1pm 0 13 * * *
• Cron for every day at 2pm 0 14 * * *
• Cron for every day at 3pm 0 15 * * *
• Cron for every day at 4pm 0 16 * * *
• Cron for every day at 5pm 0 17 * * *
• Cron for every day at 6pm 0 18 * * *
• Cron for every day at 7pm 0 19 * * *
• Cron for every day at 8pm 0 20 * * *
• Cron for every day at 9pm 0 21 * * *
• Cron for every day at 10pm 0 22 * * *
• Cron for every day at 11pm 0 23 * * *
• Cron for every weekday 0 0 * * 1-5
• Cron for every weekday at 5pm 0 17 * * 1-5
• Cron for every weekday at 6pm 0 18 * * 1-5
• Cron for every monday 0 0 * * 1
• Cron for every tuesday 0 0 * * 2
• Cron for every wednesday 0 0 * * 3
• Cron for every thursday 0 0 * * 4
• Cron for every friday 0 0 * * 5
• Cron for every saturday 0 0 * * 6
• Cron for on the 15th of every month 0 0 15 * *
• Cron for twice a month (1st and 15th) 0 0 1,15 * *

chmod permission calculator

Convert Unix file permissions between octal and symbolic, and see exactly what each one allows.

Open the chmod calculator →

• chmod 777 rwxrwxrwx
• chmod 755 rwxr-xr-x
• chmod 644 rw-r--r--
• chmod 700 rwx------
• chmod 600 rw-------
• chmod 640 rw-r-----
• chmod 750 rwxr-x---
• chmod 711 rwx--x--x
• chmod 775 rwxrwxr-x
• chmod 664 rw-rw-r--
• chmod 666 rw-rw-rw-
• chmod 444 r--r--r--
• chmod 555 r-xr-xr-x
• chmod 400 r--------
• chmod 660 rw-rw----
• chmod 766 rwxrw-rw-
• chmod 770 rwxrwx---
• chmod 740 rwxr-----
• chmod 754 rwxr-xr--
• chmod 764 rwxrw-r--
• chmod 550 r-xr-x---
• chmod 500 r-x------
• chmod 440 r--r-----