Age difference calculator
Do you need help working our what your real age gap actually is? You can subtract
your ages for a simple estimate, but the actual age gap is much more complex.
At 20 dating we have made it simple, enter the date of birth of the two people,
hit the button and get the exact age difference, even down to the day!
Married? In a relationship? Just checking? Check your gap
Enter your date of birth and your partners to get an accurate and precise age difference.
Embed this calculator on your own site
Copy & paste the code below to add this age difference calculator to your own
website or blog. If you have an article about gap differences / age gap dating
your visitors will fill in their own partner's details out of curiosity, increasing
the time they spend on your site, which is always a good thing.
How the age difference calculator works
Hang on, here comes the technical bit. We find the oldest person and workout the
difference in years. We then take the difference in months and adjust the year
if required, we then take a similar process to work out the months and adjust
based on the days, if required. Finally, we work out the days based on the number of days
in the month(s) and factor in a leap years (if required).
There are some limits to the allowable date of
births if you wanted to compare historical figures or futuristic super heroes!
The minimum year (oldest) you can set is 100, the maximum (future) is 5000.
But if you want to work out if a potential partner is too old for you then
you will not be overly concerned with these limitations. This calculator correctly
handles leap years.
A worked age gap example
In the interests of maths let's look at James and Helen.
James was born 23rd July 1989, Helen 7th August 1975. Their age gap is 13 years, 11 months and 16 days.
Relationships: Men older VS Women older
We analysed census data from the United States and combined married and unmarried different
sex couples to see how age difference varied with gender.
You can see from this data that over all age differences there are considerably more
older men than there are older women. There seems to be a social stigma when it comes to
a mature woman and a younger guy, whereas a man is often held in high regard when
he dates a much younger woman.
Table of age differences and gender
|Man older %
|Woman older %
|0 to 1
|2 to 5
|6 to 9
Age gap defined in years, all numbers is 1000s. For example, 22,578 is 22,578,000.
What is an acceptable age gap?
There is a general rule of acceptance which is defined as half your own age + 7 years,
this will give you the minimum acceptable age, to work out the maximum, your age - 7 years, times 2.
A worked example
A person is aged 40. Minimum age is 40 divided by 2 which equals 20, plus 7 is 27.
Maximum age is 40 subtract 7, which is 33 times 2 is 66. The table below has some
more results, already worked out for you.
Table of acceptable age gaps
We have rounded down any half numbers (0.5) in the
interest of clarity.
This basic rule of acceptable age difference seems fair for people aged 25 to 35. The minimum age
also seems sensible as age increases. The issue is maximum age. It doesn't take long before it
reaches an age gap that even 20 dating would consider extreme.
More than 20 years age gap?
If you entered a potential partner in our calculator and ended up with a result of 20 years or more and then you should consider joining us a 20 dating. All our members are interested in
dating someone with a minimum gap of 20 years!
Age gap calculations are fun to perform and discuss but don't let them constrain a potential partner.
If you have a good and happy relationship it really doesn't matter what your age difference is and more importantly, don't worry about what other people think. It's your life, your partner and your relationship.
Any data you enter in our age difference calculator is not saved or stored. It
is an anonymous and free service.