Years to Decades Calculator
Convert between years and decades with precise calculations
Years ↔ Decades Converter
Enter the number of years to convert
Enter the number of decades to convert
Common Conversions
Famous Historical Decades
2020s (Current)
2020-2029
Current decade
2010s
2010-2019
Rise of social media and smartphones
2000s
2000-2009
The "Noughties" - Digital revolution
1990s
1990-1999
Internet boom and pop culture
1980s
1980-1989
MTV generation and personal computers
1970s
1970-1979
Disco era and environmental awareness
1960s
1960-1969
The "Swinging Sixties" - Cultural revolution
1950s
1950-1959
Post-war boom and rock 'n' roll
Quick Facts
Years per Decade
One decade always equals exactly 10 years
Decades per Century
100 years = 10 decades = 1 century
Centuries per Millennium
1000 years = 100 decades = 1 millennium
Decade Conventions
0-to-9 Rule (Most Common)
Decades run from years ending in 0 to years ending in 9 (e.g., 2010-2019)
1-to-0 Rule (Traditional)
Decades run from years ending in 1 to years ending in 0 (e.g., 2011-2020)
Life Stage Examples
Understanding Decades
What is a Decade?
A decade is simply a period of 10 years. The word comes from the Greek "deka," meaning ten. Whether you're talking about someone's age, historical periods, or planning future goals, decades provide a convenient way to group years together.
Simple Conversion
- •Years to Decades: Divide by 10
- •Decades to Years: Multiply by 10
- •Memory tip: Count your fingers (10 = 1 decade)
Historical Context
Decades have become cultural markers, often associated with distinctive styles, events, and social movements. From the "Roaring Twenties" to the "Swinging Sixties," each decade carries its own identity.
Time Relationships
Practical Examples
Personal Planning
Setting life goals by decades (career, family, retirement)
Historical Analysis
Studying cultural and social changes over time periods
Business Forecasting
Long-term strategic planning and trend analysis