Age Calculator
Calculate exact age in years, months, days, hours, and minutes from date of birth.
Age Calculator
Mortgage Details
Enter loan amount, rate, and term
Monthly Payment
Rate Comparison
How rate changes affect your payment.
Smart Insights
Personalized takeaways from your numbers.
Real-Life Examples
$350K · 6.5% · 30 yr
$250K · 5.5% · 15 yr
The Formula Behind It
Age = Current Date - Date of BirthVariables
- M = P × r(1+r)^n / ((1+r)^n − 1)
How It Works
- Enter your home loan amount in US dollars.
- Set the annual interest rate (APR).
- Choose loan term in months (e.g., 360 for 30 years).
- View monthly payment, total interest, and amortization insights.
About Age Calculator
The Mortgage Calculator helps US homebuyers estimate monthly principal-and-interest payments, total interest over the loan life, and equity buildup over time. Whether you’re buying your first home, refinancing, or comparing 15-year vs 30-year terms, accurate payment projections are essential for budgeting.
How Mortgage Payments Work
Monthly payments use the standard amortization formula: M = P × r(1+r)^n / ((1+r)^n − 1), where P is loan principal, r is monthly interest rate, and n is total months. Early payments are mostly interest; later payments apply more to principal.
15-Year vs 30-Year Mortgages
A 30-year mortgage offers lower monthly payments but significantly more total interest. A 15-year mortgage costs more monthly but builds equity faster and saves tens or hundreds of thousands in interest. Use this calculator to compare scenarios before committing.
What’s Not Included
This calculator covers principal and interest only. Your actual housing payment may include property taxes, homeowner’s insurance, HOA fees, and PMI (private mortgage insurance) if your down payment is below 20%. Budget for these additional costs when planning your purchase.
Frequently Asked Questions
How is age calculated?
Age is the difference between the current date and date of birth, accounting for leap years.
Does the calculator account for leap years?
Yes. Our age calculator correctly handles leap years and varying month lengths.
Can I calculate age between any two dates?
Yes. Enter any start and end date to calculate the exact duration between them.
How do I calculate age in months for a baby?
Enter the birth date and today's date to get age in years, months, and days.
What timezone is used?
Calculations use your local browser timezone for the current date.
How is age used in legal contexts?
Legal age is typically calculated as completed years on the relevant date, which may differ from exact age.
Can I find what date I will be a certain age?
Add the desired years to your birth date to find when you'll reach that age.
How many days old am I?
Our calculator shows your exact age in days, hours, and minutes.
Is age calculated differently in Korea?
Korean age traditionally adds one year at birth and another on New Year's Day. Our calculator uses international age.
How to calculate age for forms?
Most forms require age as of a specific date. Use our calculator with that reference date.
Community Stories
Real experiences from people like you.
"Compared 15 vs 30 year before buying."
Saved $120K in interest with 15-year