What is second?

The second is the SI base unit of time. It is used globally in science, engineering, computing, and everyday life, and is the foundation upon which all other time units are built.

What is day?

A day is a unit of time equal to 24 hours, corresponding to one full rotation of the Earth. It is the primary unit for calendars, deadlines, event scheduling, and date-based calculations.

Worked examples

1 second = 0.00001157 day

1 day = 86,400 second

More Time conversions

• Convert second to minute
• Convert second to hour
• Convert second to day
• Convert second to week
• Convert second to year (365 d)
• Convert second to millisecond
• Convert second to microsecond
• Convert second to nanosecond
• Convert second to century (100 yr)

Assumption: year is defined as 365 days and century values are approximate.