Quit-Smoking Recovery Timeline

Enter the date you quit smoking to see how long you have been smoke-free and which health milestones you have typically reached. The milestones come from the American Cancer Society and are averages, not promises.

Pick the date of your last cigarette. It must be today or earlier.

Not medical advice

This tool gives general information only. It can’t diagnose any condition or tell you whether you need a test or treatment. Talk to a doctor about your own health. If you have severe breathlessness, chest pain, are coughing up blood or your lips look blue, call 911 (US) or 999 (UK). See our Medical Disclaimer.

How it works

The tool counts the time between your quit date and today, then compares it with the timeline published by the American Cancer Society (last revised May 23, 2025). Each milestone is marked “Reached”, “In progress” (you are inside the time window) or “Upcoming”.

The milestones we use

  • A few minutes: heart rate drops.
  • 24 hours to a few days: nicotine in the blood drops to zero and carbon monoxide returns to normal.
  • 1 to 12 months: coughing and shortness of breath decrease.
  • 1 to 2 years: heart attack risk drops sharply.
  • 5 to 10 years: risk of mouth, throat and voice box cancers is cut in half; stroke risk decreases.
  • 10 years: lung cancer risk is about half that of someone who still smokes.
  • 15 years: coronary heart disease risk is close to that of a nonsmoker.
  • 20 years: risk of several cancers drops to close to that of someone who never smoked.

You may have seen other timelines online with milestones such as “12 hours” or “1 to 9 months”. Many of those copy an older version of the American Cancer Society list. We only use the current version, so a few dates differ from what you may see elsewhere.

What this tool can’t tell you

Recovery depends on how long and how much you smoked, your age, other health conditions and whether you are exposed to other smoke or pollution. Some lung damage, such as emphysema, does not reverse. If you still have a cough, wheezing or breathlessness months after quitting, talk to your doctor. Don’t assume it will clear on its own.

Free help to stay quit

In the US, call 1-800-QUIT-NOW (1-800-784-8669) to reach your state’s free quitline, or visit Smokefree.gov for apps, text programs and a quit plan. In the UK, the NHS Quit Smoking service offers free support.

Frequently asked questions

According to the American Cancer Society, coughing and shortness of breath typically decrease within 1 to 12 months of quitting. Longer-term risks, such as lung cancer risk, fall over many years.

Many people breathe more easily after quitting, but some damage, such as emphysema, is permanent. Quitting still slows further damage at any age. Ask your doctor about your own lungs.

Some milestones happen across a range of time, such as 1 to 12 months. If your quit date falls inside that range, the milestone is in progress for you.

Many people try several times before quitting for good. You can enter your most recent quit date. Free support from 1-800-QUIT-NOW or Smokefree.gov can help you stay on track.

No. The tool runs in your browser and nothing you enter is sent to us or saved.

Sources

Related