I’ve always been a bit curious about the real cost of my daily coffee. Not in a guilty way, as I genuinely enjoy it, but there’s a difference between choosing to spend money on something and just drifting into spending it without really noticing. That curiosity is what led me to build a coffee cost calculator.
It started as a spreadsheet, which turned into something a bit more useful: a proper coffee cost calculator that anyone can use.
How the Coffee Cost Calculator Works
The calculator lets you pick your chain, Starbucks, Costa, Caffè Nero, Pret, Greggs, or McDonald’s, followed by your usual drink, size, and any extras like oat milk or an extra shot. You tell it how often you buy it each week, and it shows you the weekly, monthly and yearly cost.
It also shows what that yearly amount could be worth if you put it away somewhere earning interest instead. That last part is the one that tends to make people stop and think.
A Quick Example
Say you pick up a medium flat white most weekdays, somewhere around £3.50 to £4. That’s roughly £18 a week, which doesn’t sound like much on its own. But run it through the coffee cost calculator and the picture changes: that’s around £75 a month, or close to £900 a year, just on one drink, most days.
I’ve written more about this in my piece on the £1,000 coffee habit, which goes into exactly how a routine that small can quietly become one of the bigger numbers in your monthly spending.
Why the Extras Add Up More Than You’d Think
One thing the coffee cost calculator makes obvious pretty quickly is how much the extras add to the total, not just the base drink. Oat milk, an extra shot, syrup, a larger size, these often add anywhere from 30p to 80p each time. On their own, none of that feels significant. But run four or five of those small add-ons through the same drink, four or five times a week, and they can easily add another £100 to £200 a year on top of the base price of the drink itself.
None of this is an argument against extras. If you genuinely prefer your coffee a certain way, that’s a perfectly good reason to pay for it. But the coffee cost calculator includes them deliberately, because the extras are part of the real number too, not just the headline price of the drink.
This Isn’t About Giving Up Coffee
I want to be straightforward about this. I’m not suggesting coffee is the enemy. I drink it every day and I have no intention of stopping. The same goes for subscriptions, takeaways, or anything else people enjoy spending money on.
This is purely about being clear on what you’re spending. There’s a big difference between looking at a number and deciding it’s absolutely worth it, versus never really knowing what the number is in the first place. The first is an informed choice. The second is just drift.
Once you know what something costs across a year, you can decide for yourself whether it fits how you want to spend your money. Maybe it does, maybe it doesn’t. Either way, at least it’s a decision rather than a default.
Try the Coffee Cost Calculator Yourself
If you want to see what your own habit adds up to, the coffee cost calculator is here. It takes about a minute and doesn’t require any sign-up. If you want to see what that annual figure could grow into if it went into savings instead, my savings interest calculator picks up where this one leaves off.
And if coffee isn’t your weakness, I’ve also built a subscription cost calculator that works on the same idea, it adds up everything you’re paying for each month and shows you the annual total laid out in front of you.
Sometimes just seeing the number is enough. Let me know how you get on with them.