This age calculator is predicated on how human age is calculated in many Western nations around the world. Which means when an individual is born their age is 0 and it will become 1 exactly a 12 months from their birth, or as we are saying, on their birthday. https://waylonahlpt.tinyblogging.com/how-much-you-need-to-expect-you-ll-pay-for-a-good-age-77386785