Quit Smoking Calculator
Put in your quit date, how much you smoked and what a pack costs to see the money you've saved, the cigarettes you haven't smoked, and what it adds up to over the years.
Liquid, pods, pouches, cigars, papers and filters: everything you buy for it.
Raises the daily cost once a year in the 5-year, 10-year and lifetime figures.
Paid in monthly, interest added monthly. Leave blank to skip. Returns aren't guaranteed.
A trip, a phone, a course: see how many months of savings it takes.
Time you get back. Pick your own figure.
"Up to age" is any age you pick for the sum, not a life expectancy. Money already spent uses today's price.
How your savings are worked out
Cost per day × days smoke-free. Projections use the same daily cost.
- 1
Cost per cigarette
$10 ÷ 20= $0.50 each
- 2
Cost per day
15 × $0.50= $7.50 a day
- 3
Days smoke-free
30 days 0 h15 × 30 days= 450 not smoked
- 4
Money saved
$7.50 × 30 days= $225 saved
Read more: the formula, a worked example and tips
The calculator first works out what smoking cost you a day: the price of one cigarette (pack price ÷ cigarettes in a pack) times how many you smoked a day. For vaping, rolling tobacco, cigars or anything else, it turns what you spent a day, a week or a month into a daily figure. Then it multiplies that daily cost by the time since your quit date, counted to the minute.
The formula
Cost of one cigarette = pack price ÷ cigarettes in a pack
Cost per day = cigarettes a day × cost of one cigarette (or: spend a week ÷ 7, spend a month ÷ 30.4167)
Money saved so far = cost per day × days since you quit
Cigarettes not smoked = cigarettes a day × days since you quit
Per week = cost per day × 7 · per month = cost per day × 365 ÷ 12 · per year = cost per day × 365
Over n years with a yearly price rise g = cost per year × ((1 + g)^n − 1) ÷ g
Invested = each month's savings paid in at the month end, then everything grows by (yearly return ÷ 12) each month: M × ((1 + i)^months − 1) ÷ i when prices don't rise
Worked example
You smoked 15 cigarettes a day, a pack of 20 cost $10, and you quit 30 days ago at midnight. One cigarette cost $10 ÷ 20 = $0.50, so a day cost 15 × $0.50 = $7.50. In 30 days you have not smoked 15 × 30 = 450 cigarettes (450 ÷ 20 = 22.5 packs) and saved $7.50 × 30 = $225.
Going forward that is $7.50 × 7 = $52.50 a week, $7.50 × 365 ÷ 12 = $228.13 a month (228.125) and $7.50 × 365 = $2,737.50 a year. Over 5 years that is $13,687.50 and over 10 years $27,375, with 15 × 365 × 10 = 54,750 cigarettes not smoked.
Advanced, with the default extras: invested at 5% a year, $228.125 a month with i = 0.05 ÷ 12 = 0.0041667 grows to 228.125 × (1.0041667^120 − 1) ÷ 0.0041667 = 228.125 × 155.2823 = $35,423.77 after 10 years ($27,375 paid in plus $8,048.77 growth). A $1,000 goal takes $1,000 ÷ $228.125 = 4.4 months of savings. From age 35 up to age 75 is 40 years × $2,737.50 = $109,500 if you kept smoking at today's price. Ten years of smoking already cost about 10 × $2,737.50 = $27,375. At 5 minutes a cigarette, 450 cigarettes is 2,250 minutes, or 37.5 hours back.
If the price rose 5% a year instead, 5 years would cost $2,737.50 × (1.05⁵ − 1) ÷ 0.05 = $2,737.50 × 5.5256 = about $15,126.42.
Notes
- Months: an average month here is 365 ÷ 12 = 30.4167 days, so a month's savings is the same all year.
- Money saved so far uses today's price for the whole time since you quit. Price rises only change the figures for the years ahead.
- Investing: the "invested" figure only counts whole months since you quit. It ignores fees and tax, and real returns go up and down. It shows what steady saving could do, not a promise.
- Other spending: if you now spend some of the money on nicotine replacement or another product, take that off what you put in for a truer figure.
Getting support
This calculator only covers money and time. For help to quit, contact your country's national quit-smoking service (most have a free helpline, website or app) or speak to your doctor or pharmacist.
Common questions
How much money will I save if I quit smoking?
Work out what smoking costs you a day, then multiply by the days. A pack of 20 for $10 is $0.50 a cigarette, so 15 a day is $7.50 a day: $52.50 a week, $228.13 in an average month and $2,737.50 a year. Put in your own numbers and currency above to see your figures, including what that adds up to over 5 and 10 years.
How many cigarettes have I not smoked since I quit?
Multiply how many you used to smoke a day by the days since you quit. At 15 a day, 30 days smoke-free is 15 × 30 = 450 cigarettes not smoked, or 22.5 packs of 20. The calculator counts in days, hours and minutes and keeps ticking while the page is open.
What if prices go up every year?
In Advanced, add a yearly price rise. The calculator then raises the daily cost once a year, so the 5-year, 10-year and lifetime figures grow faster. For example, $2,737.50 a year rising 5% a year adds up to about $15,126 over 5 years instead of $13,687.50.
What if I invested the money instead?
In Advanced, enter a yearly return. The calculator pays in one month of savings at the end of each month and adds interest monthly. At 5% a year, $228.13 a month grows to about $35,424 after 10 years, of which $27,375 is what you put in. Returns are never guaranteed; this is only an illustration.
Does it work for vaping, rolling tobacco or cigars?
Yes. In Advanced, pick what you used and enter what you spent on it a day, a week or a month. The money figures work the same way; the cigarette count is only shown for cigarettes.
Where can I get help to quit?
Most countries have a free national quit-smoking service, such as a helpline, website or app, and your doctor or pharmacist can talk you through the support available where you live.
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Made by Zulu Calculator, part of AlphaZulu LLC. Formulas are shown in full and rule figures are checked against official sources; see how we build calculators.