Sobriety Calculator: How Many Days Sober Are You?

A sobriety calculator counts the full days between your last drink and today. Pick your date below and you'll see your days sober, the same time in years, months and days, and how far you are from your next milestone.

The count is plain date arithmetic, so it needs nothing from you except one date. Someone whose last drink was on 15 January 2026 was 291 days sober on 2 November 2026, which is 41 weeks and 4 days, or 9 months and 18 days. Below: which date to use, the common milestones, how to work out an anniversary, and what to do with the number if you slip. If you drink heavily every day, please read the safety note further down first, because stopping suddenly can be dangerous.

How do you calculate how many days sober you are?

Subtract your sobriety date from today's date. You can do it by hand by adding up the days left in the first month, every full month after it, and the days so far in the current one. For the example above:

Period	Days
Rest of January (31 minus 15)	16
February to October 2026	273
November, up to the 2nd	2
Total	291

Hand counts usually go wrong in two places: months have different lengths, and leap years add a day. That's why the same stretch can read differently depending on the unit. "Three months" can be 89, 90, 91 or 92 days depending on which months it covers. A calculator that works from calendar dates handles this for you, so 90 days and three months won't always land on the same date.

The tool above treats the date as day zero. If you enter today, it shows 0 days, and tomorrow it shows 1. Each number is a full day you've completed.

Which date should be your sobriety date?

Most people use the date of their last drink, and that's what this calculator assumes. Some prefer to start from the first full day without alcohol, which is the next morning. That moves the count by one day and changes nothing else, so choose whichever feels true and stick with it.

If you can't remember the exact date, pick the closest one you're sure of. You're the only one who needs it to be right, though a mutual-aid group or a sponsor may have their own custom for it.

Sobriety milestones and what they mark

These are the points the calculator counts toward. They're conventions people use to mark time, not medical checkpoints, and reaching one doesn't mean any particular thing has happened in your body. What usually changes at each stage varies from person to person, so the guides linked below go through it with sources.

Days sober	Roughly	Read more
1	First full day	How to stop drinking
7	One week	1 week sober
14	Two weeks
30	About a month	30 days sober
60	About two months
90	About three months	90 days sober
180	About six months	6 months to 1 year sober
365	One year	6 months to 1 year sober
500	About 16 months
1,000	About 2 years and 9 months

After that the calculator counts in years. You may also have seen sobriety chips, coins or medallions that mark similar points. Customs vary: A.A. says neither its General Service Office nor A.A. as a whole makes or sells them, that designs vary by region and group, and that each group decides for itself how to mark sobriety anniversaries. So your group's chips may not match the table above.

How to work out your sobriety anniversary

An anniversary is the same calendar date one or more years on, which isn't always the same as adding 365 days. A year containing 29 February has 366 days. Start on 1 March 2027 and day 365 falls on 29 February 2028, while your anniversary is the next day, 1 March 2028, at 366 days.

If your date is 29 February itself, you have a real anniversary only in leap years. Most people mark 28 February or 1 March in the other years.

How you mark the day is up to you: a meal with someone who knows what it took, something bought with the money you saved, or a quiet note to yourself.

The big round numbers don't line up with the calendar at all, which is part of their appeal. A last drink on 10 March 2024 puts day 1,000 on 5 December 2026, a date nobody would otherwise think to celebrate.

What happens to the count if you slip?

Most counters reset to zero, and for some people that's the hardest part. It helps to know how common slips are. The National Institute on Drug Abuse puts relapse rates for substance use disorders at about 40 to 60 percent, close to the 50 to 70 percent it gives for high blood pressure and asthma. It treats relapse as a reason to resume or adjust treatment, not as proof that treatment failed.

You can also keep two numbers instead of one:

• Days since your last drink. This is the number the calculator shows. Enter the new date after a slip.
• Sober days in total. This one doesn't go back to zero. Say you had 200 days, then one day of drinking, then 100 more days. Your current count is 100, and you've been sober on 300 of the last 301 days.

Only you can decide which is more useful to look at. Our guide on what to do after a relapse has a calm plan for the first 24 hours, plus a tool that shows the days you kept.

Does counting sober days help?

Keeping track is standard advice. The NIAAA's Rethinking Drinking program lists it among its first tips for cutting down, suggesting a wallet card, check marks on a calendar or notes on a phone. That advice is about tracking drinks, though. We couldn't find a good trial of day counters themselves, so treat this as practical rather than proven.

In practice, a count gives you something concrete on a day when nothing else feels different. Some people also find it gives them a reason to wait out a hard evening, because there's a number at stake.

The downside is the same thing from the other side. If the number becomes the whole point, it can feel fragile, and a reset can sting. If that sounds like you, the two-number approach above may suit you better, or you can look at the count less often.

How to work out the money and drinks you've saved

Multiply what you used to spend on a typical day by your days sober. Four drinks a day at $7 each, over 90 days, comes to 4 × 7 × 90 = $2,520. Drinks work the same way: at 10 drinks a week, 90 days is 10 × 90 ÷ 7, or about 129 drinks you didn't have.

These figures are only as good as your estimate, so use your real habits instead of a national average. Our money saved calculator does this in your currency and shows what the money could become.

Before you pick a day one: a safety note

If you drink heavily every day, don't stop suddenly without medical guidance. The NHS warns that stopping suddenly can be dangerous if you're dependent on alcohol, and advises getting medical help if you get withdrawal symptoms. Withdrawal can be life-threatening, and MedlinePlus lists seizures, severe confusion, hallucinations, fever and an irregular heartbeat as reasons to call emergency services right away.

A calculator only counts dates. It can't tell you whether stopping is safe for you. Our guides on alcohol withdrawal symptoms and tapering safely explain what to raise with a doctor.

Frequently asked questions

How do I calculate how many days I've been sober?

Enter your sobriety date in the calculator at the top of this page, and it counts the full days from that date to today. To do it by hand, add the days left in your first month, each full month since, and the days so far this month. Remember that a leap year adds one day.

Does my sobriety date have to be exact?

No. The closest date you're sure of works well, since you're the one it's for. If you belong to a mutual-aid group, it may have its own custom. What matters most is using the same date each time you check, so the count stays consistent from one day to the next.

Is today day zero or day one?

This calculator counts completed days, so the date you enter is day zero and tomorrow is day 1. Some people call their first day "day one" instead, which moves the count by one. If your group or app counts differently, you may see a difference of a single day.

Can I count a past streak that has ended?

This tool only counts up to today. For a past streak, subtract the start date from the end date using the same method shown above. If you're looking at time you've already lived through, our guide on what to do after a relapse includes a tool for the days you kept.

Is my date saved anywhere?

No. The calculator works in your browser while the page is open, doesn't save the date, and doesn't send it to us, so you'll need to enter it again next time. It isn't medical advice either. It only counts dates, and it can't tell you anything about your health or whether stopping is safe.

The honest takeaway

Your number is just arithmetic, and it's yours to use however it helps. Pick a date you trust and look at the count when it gives you something. If a reset stings, keep the total as well.

If you'd rather not enter your date each time, Sober Tracker: Go Alcohol Free keeps the count on your phone, marks milestones along the way, and adds a star to your Recovery Sky for each sober day. Stars are never lost after a slip, and a home screen widget can show your streak.

There's no account, and your data is stored on your device and never sent to us. It's free to download and start, with limits on some features and an optional Pro upgrade. It's a habit tool, not medical care. You can get it on the App Store or Google Play.

Sources

• National Institute on Drug Abuse. Treatment and Recovery. Drugs, Brains, and Behavior: The Science of Addiction.
• Alcoholics Anonymous. I want to buy chips/coins/medallions. Are they available on aa.org?
• NIAAA. Rethinking Drinking: Tips to try.
• NHS. Alcohol misuse: treatment.
• MedlinePlus, U.S. National Library of Medicine. Alcohol withdrawal.