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Calculate Sales tax US

Sales Tax States, to calculate sales tax of US States, city and zip code.


Age calculator

Calculate from date of birth

Get the number of milliseconds to number of months of your birth date to today.

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Age individual full time

Individual full age results for each time period.

Age combination time

This is the total of time in a combination of Years(s), Month(s) and Day(s).

Fractions of months

*The fractions of months are calculated based on the number of days of the last month entered in the field "date to compare age".

Age calculator explications

The entire structure of this calculator is based on the "general" way to calculate the age of a person from his/her birthday.

The exact day of the field "date to compare age" is exclude from the calculation.


The number of days between October 21 and 25 will be 4 and not 5
Days between 25 and 21 = 4
25-21 = 4

Months calculation

There is a lot of different way to interpret a month. In our système, months are calculated based on a full month period and not only 30 days. We use the "same days" between one month to another to be considered a full month.

Asian traditional age calculator

China, Japan, Vietnam and South Korea

In china the age do not change on the birthday of a person but on the first day of lichun which is between february 4 and 5 each year, representing the beginning of spring

By this concept, and in a particular situation, a person could have 364 days of life and can be considered as having the same age as someone who has just born.

Eastern Mongolia

The traiditional way to get the age of a person is from the number of moon since the birthday. Full moons for girls and new moons for boys.


Canada sales tax



2014 to 2020








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