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# Human to dog age calculator

World's simplest time tool
With this browser-based application, you can convert a person's age to a dog's age. As dogs of different sizes have different lifespans, we added multiple dog age scales that take a dog's weight into account. In the options, you can choose the weight category of the dog and make age calculations for all dogs in this category. You can also enter multiple human ages in the input at once and additionally print the dog's life stage in the output. Created by computer nerds from team Browserling.
Dog's Weight Class
Dog's aging depends on its weight. Select the weight category your dog belongs to, to get the most accurate dog's age calculation.
Display Dog's Life Stage
Print the dog's life stage next to each age.

## What is a human to dog age calculator?

This is a quick online utility for calculating the age of a person using an age scale of a dog. It's well known that dogs grow and develop much faster than humans. For example, the childhood of a human lasts up to about 15 years, while dogs go through the childhood in just 1 year. Dogs also get old much faster than humans. Small dogs live about 15–16 years, medium-sized dogs live 11–14 years, large dogs live 10–12 years, and giant dogs live only 7–8 years. During this time, dogs live through several stages of life: Puppy (for medium-weight dogs it lasts through the 1st year of life), Adult (from 1 to 8 years), Senior (from 8 to 12 years), and Geriatric (from 12 years onwards). Each stage of a dog's life is similar to a human's, except it has a shorter duration. We implemented an algorithm that lets you turn your age into dog years. As the pace of life is different for small, medium, large, and gigantic dogs, you can select the weight class of the dog in the options. For example, if you enter "56 years" (that's human years) into the input, you'll get "10 years" for small dogs, "9 years" for medium dogs, "8 years and 2 months" for large dogs, and "7 years" for giant dogs. You can also display the dog's life stage in the output. For example, a "56 years" old human would be a senior dog. You can perform age calculations for several human years in parallel if you paste them as a vertical list (one per line) in the input text area. The ages can be specified in years, months, and days, as well as combined components, such as "3 years 6 months". Dogabulous!

## Human to dog age calculator examples

Click to use
Compare a Dog's and His Owner's Age
The owner of a Beagle wanted to know when his dog will reach his current age. To do this, he entered his current age in the input "32 years 8 months" and selected the medium weight dog class (because dogs of the Beagle breed have a weight of 20 to 25 lbs (9.1 to 11.3 kg), so they belong to medium weight class). In the output, he instantly saw that his beloved doggo will reach the owner's current age when it's "4 years and 2 months" old.
32 years 8 months
4 years and 2 months
Required options
These options will be used automatically if you select this example.
Dog's aging depends on its weight. Select the weight category your dog belongs to, to get the most accurate dog's age calculation.
Print the dog's life stage next to each age.
Giant Dog Years
In this example, we convert several human years into giant dog years. The breeds of giant dogs include the Great Dane, Irish Wolfhound, Saint Bernard, and Newfoundland. Unfortunately, the life expectancy of giant dogs is much shorter than that of small dogs and therefore requires a separate age formula. To use this formula, we select the "Giant Dogs" mode in the options and also activate the checkbox for printing the dog's life stage.
20 days 12 months 10 years 20 years 30 years 40 years 50 years 60 years 70 years 80 years 90 years
1 day (Puppy) 1 month (Puppy) 8 months (Puppy) 1 year, 9 months, 18 days (Puppy) 2 years, 10 months, 19 days (Adult) 4 years, 3 months, 12 days (Adult) 6 years, 1 month, 21 days (Adult) 7 years and 6 months (Senior) 8 years, 10 months, 8 days (Senior) 10 years, 1 month, 21 days (Geriatric) 11 years, 6 months, 25 days (Geriatric)
Required options
These options will be used automatically if you select this example.
Dog's aging depends on its weight. Select the weight category your dog belongs to, to get the most accurate dog's age calculation.
Print the dog's life stage next to each age.
Pro tips Master online time tools
You can pass input to this tool via ?input query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
https://onlinetimetools.com/convert-human-age-to-dog-years?input=32%20years%208%20months&dog-size=medium&print-age-stage=false
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