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 nanosecond?

A nanosecond is a unit of time equal to one billionth of a second. It is critical in computer processor timing, high-frequency trading, optical communications, and physics experiments.

Worked examples

1 second = 999,999,999.99999988 nanosecond

1 nanosecond = 1.000000e-09 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.