Health and Life Calculators: Blood Alcohol, One Rep Max, Dog Age, Steps to Km and Countdowns
Free calculators for blood alcohol content, one rep max, dog age, steps to kilometres, Christmas countdown and anniversary dates.
Everyday questions about health, pets and dates do not need an app. These free calculators answer them in the browser, with no sign-up and nothing uploaded.
Quick answer
| Question | Tool |
|---|---|
| Estimate blood alcohol | Blood Alcohol Content Calculator |
| Estimate my max lift | One Rep Max Calculator |
| My dog's age in human years | Dog Age Calculator |
| Steps to distance | Steps to Km Calculator |
| Days to Christmas | Christmas Countdown |
| Time since a special date | Anniversary Calculator |
Blood alcohol
The calculator uses the Widmark formula with standard drinks of 14 g, body weight, sex and hours. It is an estimate and must never be used to decide whether to drive: the only safe amount before driving is none.
One rep max
Enter the weight and reps of a set. Epley and Brzycki formulas estimate your one-rep max, and percentages of 90, 80, 70 and 60 percent give training loads. Estimates are most accurate for sets of 10 reps or fewer.
Dog age
The first year is about 15 human years, the second 9 more, and then 4, 5 or 6 per year for small, medium and large dogs. It is a better guide than multiplying by seven.
Steps to kilometres
Stride length is about 41.5 percent of height. 10,000 steps is about 7 km for a 170 cm person and burns around 400 kcal.
Countdowns and anniversaries
The Christmas countdown shows days, weeks and sleeps, or counts down to any date you pick. The anniversary tool shows the time since a date in years, months and days and how long until the next one.
Tips
- Treat health numbers as estimates and ask a professional about your own situation.
- Warm up well before testing a heavy single.
Frequently asked questions
Are these medical advice? No. They are estimates, not medical advice.
Is the date stored? No. Everything stays in your browser.
