How the savings are worked out
The live figure at the top is the one piece of arithmetic worth explaining slowly. Your daily rate is (cigarettes a day ÷ 20) × the pack price, so a fifteen-a-day habit on a 12 pack is 9.00 a day. That rate is divided by 86,400,000 — the milliseconds in a day — and multiplied by the milliseconds since your quit moment. Which is why the number moves while you watch it: it is a rate against a clock, not a total anybody has counted.
The projections are the same rate carried forward. One year is daily × 365, three years is that times three. Five and ten years use the future value of a monthly contribution invested at 7% a year, compounded monthly: monthly × ((1 + 0.07 ÷ 12) ^ (12 × years) − 1) ÷ (0.07 ÷ 12), with monthly taken as daily × 30.44. The 7% is OUR assumption — a long-run nominal figure, before tax, before fees and before inflation. And the compounding only happens if you actually move the money; otherwise the honest figure is the flat one above it.
The equivalents list is annual savings divided by a price we chose for each item, rounded down, and a row only appears once you can afford one whole unit of it. Those prices are ours and they are rough by design: a year of Netflix at 180, a return flight to Europe at 350, a month of groceries at 400. They exist to turn an abstract annual figure into something with a size, not to price anything accurately.
Your quit date and your smoking figures stay in this browser. There is no account and nothing is uploaded.
Nothing on this page is medically reviewed and nothing above measures anything about you — it
explains a calculation. Where a number here is our own judgement rather than a published figure, the
note says so and cites nothing; where the health bodies disagree, it carries the disagreement.
Method last checked 21 August 2026.
