Sobriety Calculator
A sobriety calculator counts the exact time since your last drink in days, hours, minutes and seconds. Enter that date below and this one shows your running total, marks every milestone you have already passed, and names the next one. It is free, needs no account, and nothing you type is uploaded.
It measures time, not blood alcohol. It cannot tell you when you are safe to drive.
Saved in this browser only. Nothing is uploaded and no account is needed.
What counts as your sobriety date?
The day of your last drink, not the day you decided to stop. Those are different dates for most people, and the decision usually comes first. Counting from it inflates the number, and an inflated number is the one you stop trusting.
If you drank into the early hours, use the calendar day the drinking started rather than the one it finished on. Adding an approximate time makes the hour count correct, which matters in the first week when hours are the unit that feels meaningful.
Sobriety calculator, sober day counter or sobriety clock?
They are the same tool. The names describe which part of it someone has in mind, not different functions.
- Sobriety calculator emphasises the arithmetic: a date in, a total out.
- Sober day counter and sobriety counter emphasise the running number you come back to.
- Sobriety clock emphasises the live display, the seconds ticking rather than a static figure.
- Clean time calculator is the same calculation under the term used in Narcotics Anonymous and other drug-recovery programmes, counting time free of drugs rather than alcohol.
The calculator above does all four. It counts, it keeps counting, it updates every second, and it does not care whether the thing you stopped was alcohol or something else. The milestone intervals hold either way, because NA uses the same chip sequence as AA.
Which sobriety milestones matter?
The sequence below is the AA chip ladder, which is what most people are counting towards whether or not they attend meetings. The calculator marks each one as you pass it. One week is included because most people count it, though AA does not issue a chip for it.
| Milestone | What tends to change |
|---|---|
| 24 hours | The first chip. Where withdrawal occurs it begins 6 to 12 hours after the last drink and peaks between 24 and 72 hours. [MedlinePlus] |
| 1 week | Not an AA chip. It is on this list because seven days is the first interval most people count to, while hours are still the unit that feels meaningful. |
| 30 days | The first monthly chip. In 94 moderate to heavy drinkers who stopped for one month, insulin resistance fell 25.9% and systolic blood pressure 6.6%, against no significant change in 47 who kept drinking. [Mehta et al., BMJ Open 2018] |
| 60 days | The second monthly chip. No specific physiological change attaches to day 60; the interval exists because the chip system counts in 30-day steps. |
| 90 days | The interval treatment programmes most often use to mark the end of early recovery. Relapse risk is concentrated in these first months rather than later ones. |
| 6 months | Half a year, and the point where the chip sequence stops counting in months and starts counting in quarters. |
| 9 months | The last chip before the first annual one. |
| 1 year | The annual chip, called a sobriety birthday in AA. From here the chips are yearly. |
| 2 years | The second annual chip. By this point the count is usually a record rather than a daily target. |
Two of these carry more weight than the rest. Ninety days is what most treatment programmes use to mark the end of early recovery, and one year is the anniversary AA calls a sobriety birthday. The intervals in between exist because the chip system counts in 30-day steps, not because anything specific happens on day 60.
Why does counting days work?
Counting days converts an open-ended commitment into a short, specific target, and it creates a record you would rather not lose. Those are two different motivations. The second one is why day counting appears in recovery approaches that agree on almost nothing else: the reason that got you to stop is not always the reason that keeps you stopped.
That is also why the number matters more than the streak being unbroken. A count you restarted honestly is worth more than one you protected by not looking at it.
How this calculator works
It takes the timestamp of your last drink, subtracts it from the current time, and converts the difference into days, hours, minutes and seconds. Weeks are whole seven-day blocks. Months use the average calendar month of 30.44 days, so a “month” here will not always line up with the same date next month.
Your date is stored in your own browser so the counter is still there when you return. Nothing is sent anywhere and no account is involved. Clearing your browser data clears the date.
If you drink heavily or every day, talk to a doctor before you stop
Stopping abruptly after dependent drinking can cause seizures and other serious withdrawal symptoms, and needs medical supervision rather than a countdown. A calculator counts time; it does not assess risk and is not medical advice. See our guide to stopping safely or NHS alcohol support.
Frequently asked questions
How many days sober am I?
Enter the date of your last drink in the calculator above and it counts the exact time since, in days, hours, minutes and seconds. Adding the approximate time of day makes the hour count accurate; leaving it blank counts from midnight.
What date should I use if I do not remember exactly?
Use the first full day you did not drink. If you are torn between two dates, choose the later one. A date you are confident in is worth more than one you will keep second-guessing, because the point of the number is that you trust it.
What are the standard sobriety milestones?
The sequence most people count towards comes from the AA chip system: 24 hours, 30 days, 60 days, 90 days, 6 months and one year. Many people add one week early on, because the first seven days rarely feel like they belong in the same category as the first thirty.
Does a relapse reset the counter?
By AA convention yes: the count restarts from the date of the last drink, which is why chips are re-earned rather than kept. Outside that convention people vary, and some keep the original date and log the slip against it. Either way the number is worth more than the streak: a count you restarted honestly beats one you protected by not looking at it.
Is this a clean time calculator too?
Yes. Clean time is the same calculation under the name used in Narcotics Anonymous and other drug-recovery programmes, where it counts time free of drugs rather than alcohol. The arithmetic does not change, and neither do the milestone intervals, because NA uses the same chip sequence as AA.
Does this tell me when I am safe to drive?
No. This counts time since your last drink in days. Fitness to drive depends on blood alcohol concentration, which falls over hours and depends on how much you drank, your body and your metabolism. Use a BAC estimator for that question, and do not drive on an estimate.
Is my sobriety date stored anywhere?
It is saved in your own browser so the counter is still running when you come back, and nothing is uploaded. Clearing your browser data removes it. If you want the count to survive a new phone, that is what the app is for.
Why does counting days help?
It turns an open-ended commitment into a series of short, reachable targets, and gives you a number you do not want to lose. That is also why day counting appears across otherwise very different recovery approaches.
Sources
- MedlinePlus: Alcohol withdrawal (withdrawal timing in the milestone table)
- Mehta et al., BMJ Open 2018: Short-term abstinence from alcohol (the 30-day figures)
- NIAAA: Alcohol's Effects on the Body
- NIAAA: Medical complications and common alcohol-related concerns
- NIAAA: Alcohol use in the United States
- NHS: Alcohol support