# How Many Years Are There in a Decade

A decade is a period of **10 years**.
The term "decade" comes from the Greek word "deka," which means "ten". A decade refers to a consecutive period of ten years.

The concept of the decade has been used throughout history to mark significant periods of time. For example, the ancient Greeks used the decade as a unit of time in their system of organizing the calendar. In the Western world, the idea of a decade as a significant period of time was popularized in the 20th century, particularly in the 1920s, which were known as the "Roaring Twenties."

In contemporary usage, the decade is often used as a convenient way to measure time for planning, analysis, and cultural or historical discussions. For instance, we might refer to the 1960s as a decade of social upheaval and political change or the 1980s as a decade of economic growth and technological advancements.

## First decade of the 21st century

The first decade of the 21st century refers to the period from January 1, 2001, to December 31, 2010. This decade is sometimes referred to as the "2000s" or the "naughties".

## How many months are there in a decade

There are 120 months in a decade

#### Decade to months calculation:

There are 12 months in a year * 10 years in a decade = **120 months in a decade**.

## How long is a decade in weeks

There are 521.429 weeks in a decade

#### Decade to weeks calculation:

There are 52.1429 weeks in a year * 10 years in a decade = **521,429 weeks in a decade**.

## How Long is a Decade in Days?

There are exactly 3652.5 days in a decade on average.

#### Decade to days calculation:

There are 365.25 days in a year * 10 years in a decade = **3652.5 days in a decade**.

However, the exact number of days in a particular decade varies depending on how many leap years are in that decade. A decade can have 1, 2, or 3 leap years, so a decade may have 3651, 3652 or 3653 days.

## How Long is a Decade in Hours?

There are 87660 hours in a decade

### Decade to hours calculation

There are 24 hours in a day * 365.25 days in a year * 10 years in a decade = **87,660 hours in a decade**.

## How Long is a Decade in Minutes?

A decade is 5,259,600 minutes long.

### Decade to minutes calculation

There are 60 minutes in an hour * 24 hours in a day * 365.25 days in a year * 10 years in a decade = **5,259,600 minutes in a decade**.

## How Long is a Decade in Seconds?

A decade is 315,576,000 seconds long.

### Decade to seconds calculation

There are 60 seconds in a minute * 60 minutes in an hour * 24 hours in a day * 365.25 days in a year * 10 years in a decade = **315,576,000 seconds in a decade**.