Years To Months Converter

Loans, leases and employment contracts are quoted in years but paid in months, and the exchange rate between the two is the friendliest number in time: twelve.

The years to months formula

There are exactly 12 months in a year, so months equal years times 12.

This holds for common, leap and Julian years alike, because a year is defined as twelve months.

For 2.5 years, 2.5 × 12 is 30 months.

For 3.4 years, 3.4 × 12 is 40.8 months, or 3 years and 4.8 months.

Twelve months in a year

The Gregorian calendar has twelve months of 28, 29, 30 or 31 days, with a mean month of 30.436875 days (Wikipedia: Month).

Because the mean month is a twelfth of the mean year, the conversion between years and months is exact and does not depend on leap years (Wikipedia: Year).

Mortgages and car loans make use of it, so a 30 year mortgage has 360 monthly payments.

How to convert years to months step by step

1. Write the number of years.
2. Multiply by 12.
3. Turn any decimal in the result into extra days if you need them.
4. Divide by 12 to reverse.

A 5 year car loan has 60 monthly payments, and a 7 year loan has 84.

years to months conversion table

The highlighted row, 1 year, is the default of the converter. The weeks column uses the Julian year of 365.25 days.

A quick mental shortcut for years to months

Multiply by 10 and add twice the years, so 7 years is 70 plus 14, which is 84 months.

For half years, add 6 months for every half.

Years and months as one number

A span such as 5 years and 7 months is 5 × 12 + 7, which is 67 months. As decimal years it is 5.5833.

Keep the months version for loan terms and contracts.

Loan and lease terms

Common terms are 36 months for a three year lease, 60 months for a five year car loan and 180 or 360 months for a 15 or 30 year mortgage.

The number of payments is the months figure.

Fractions of a year

Quarter years are 3 months, thirds are 4 months and half years are 6 months. A fraction such as 0.2 year is 2.4 months.

Round to the nearest month for plans, and to the day for contracts.

Months of different lengths

Months have 28, 29, 30 or 31 days, so a month is not a fixed number of days (Wikipedia: Month). The average is 30.4375 days on the Julian year.

Use dates if you need an exact day count.

Age in months

Child ages are often given in months up to 24 or 36 months. An age of 2.5 years is 30 months.

Convert back by dividing by 12.

Months back to years

Divide by 12 to reverse. A span of 30 months is 2.5 years, and 100 months is 8 years and 4 months.

Use the months into years converter for lists.

Checking your answer

Divide the months by 12 to recover the years. If 30 gives 2.5, the sum is right.

The months figure should always be twelve times the years.

More values at a glance

0.5 years is 6 months. 2 years is 24 months. 5 years is 60 months.

10 years is 120 months. 25 years is 300 months. 100 years is 1,200 months.

Each answer is the input times 12. You can use the same factor for any value that is not listed here.

The unit sizes

One of the years equals 12 months. One of the months equals 0.0833 years.

If a result looks very large or very small, compare it with these sizes before you use it.

Checking in reverse

Take 120 months and divide by 12. You get back 10 years. If you do not, one of the numbers was typed or rounded wrongly.

Quick conversion answers

Where this conversion is used

Borrowers and renters count payments in months.

HR teams and contractors convert tenure and notice periods.

Parents and students convert ages and course lengths.

Common mistakes to avoid

• Using 365 days per year for months. Use 12 months.
• Treating a decimal as months. 2.5 years is 30 months, not 2 years 5 months.
• Dividing instead of multiplying. Months are the smaller unit.
• Assuming each month has 30 days. Month lengths vary.

Related converters

• Months into years
• Years to days
• Days to months
• Days to years

Frequently asked questions

Sources

• Wikipedia: Month (en.wikipedia.org)
• Wikipedia: Year (en.wikipedia.org)