Best Answer

12 months = 1 year

21 months = 21/12 years = 1.75 years = 1year 9months

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1 year and 9 months

Q: How many years are equal to 21 months?

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1.75 years

There are 12 months in one year. Therefore, 252 months is equal to 252/12 = 21 years.

12 months/year x 21 years = 252 months

1 year = 12 months 2 years = 24 months 3 years = 36 months . . 10 years = 120 months . . 20 years = 240 months 21 years = 252 months

21 days and no hours

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1.75 years

There are 12 months in one year. Therefore, 252 months is equal to 252/12 = 21 years.

12 months/year x 21 years = 252 months

1 year = 12 months 2 years = 24 months 3 years = 36 months . . 10 years = 120 months . . 20 years = 240 months 21 years = 252 months

21 days and no hours

well...21 months. Maybe you mean how many years? 21 months can also be stated as 1.75 years, 1 and 3/4 years, or 1 year and 9 months.

It's 1.75 years.

21 months that 2 years

1.75 years = 12 + 9 = 21 months

21 years and 9 months to be exact

1 and 3/4 years

21