LifeCalc

We use the orbital period of each planet around the sun compared to Earth's. For example, Mars takes about 687 Earth days to orbit the sun, so we divide your Earth age in days by 687 to get your Mars age in years.

We provide both Western and Chinese zodiac signs based on your birth date. The Western zodiac is determined by the month and day of your birth, while the Chinese zodiac is determined by your birth year. The brief descriptions are general interpretations commonly associated with each sign. These are meant for entertainment purposes only.

Our calculator uses the JavaScript Intl.DateTimeFormat API to determine the exact number of days between your birth date and the current date. This method precisely accounts for leap years, varying month lengths, and timezone considerations to provide the most accurate calculation possible. For the exact age calculation, we use the same API to ensure accuracy down to the day.

We use the scientific formula: human_age = 16 × ln(dog_age) + 31, which is based on recent research comparing aging patterns in humans and dogs. This formula accounts for the fact that dogs age more rapidly in their early years and then the aging process slows down.

For example, according to this formula:

• A 2-year-old dog is equivalent to a 42-year-old human
• A 5-year-old dog is equivalent to a 56.75-year-old human
• A 10-year-old dog is equivalent to a 67.8-year-old human

To calculate your age in dog years, we solve the formula for dog_age: dog_age = e^{(human_age - 31) / 16}

These calculations are estimates based on widely accepted averages:

• Time Spent Sleeping: Based on the recommended 8 hours of sleep per day, which is one-third of your life. Actual sleep patterns vary by age, lifestyle, and individual needs.
• Words Spoken: Based on research suggesting the average person speaks about 15,000 words per day, though this varies by personality, profession, and culture.
• Breaths Taken: Calculated using an average of 20,000 breaths per day (about 12-20 breaths per minute), though this varies with age, activity level, and health.
• Steps Walked: Uses a conservative estimate of 5,000 steps per day with an average step length of 0.8 meters. Actual steps may vary significantly based on lifestyle, occupation, and fitness habits.

These statistics are meant to be fun approximations rather than precise measurements of your life.

No. All calculations happen within your browser. We don't store your birth date or personal information on any servers. Your privacy is important to us.

Yes! Each statistic has a share button that lets you share that specific stat on social media or via direct message. It's a fun way to compare your life stats with friends and family.