🔁 Subscription Cost Calculator
← Life & LivingOne subscription doesn't look like much. Five or ten can quietly become a serious yearly expense. Add your recurring payments, see what they really add up to, and explore what the same money might become if you invested it instead.
Your results
These are annualised averages: what the year's charges work out to, not a promise about any particular month's bank statement.
Where it all goes
The biggest bites
Five years can look very different from one month
This is the cost of keeping the same subscriptions at today's entered prices — not a prediction that providers will hold their prices steady.
What changes if one goes?
What if you invested it instead?
Imagine cancelling a few subscriptions and putting the same money into an investment instead. Choose the subscriptions you'd redirect, pick a hypothetical annual return, and see how your contributions and possible growth could build over time.
Start small or go all in?
Watch the redirected money grow
Projected balance Your contributions
See the numbers behind the chart
| Year | Contributed | Projected balance |
|---|
Other horizons at the same return and the same selection.
Illustrative, not a forecast. This assumes the selected subscription costs stay unchanged and the same average amount is invested at the end of every month at a constant return. Real investments can rise or fall. Taxes, fees, inflation, changes in subscription prices and investment timing are not included. It isn't financial advice.
The little charges don't stay little.
A $7 app, a $12 music service and a streaming plan don't feel like big financial decisions. They're just a few small charges that show up, disappear from your account and come around again.
The interesting number isn't always what each subscription costs. It's what all of them cost together — over a month, a year or the next five years. When one charges weekly and another bills annually, you can easily underestimate the total without realising it.
This calculator puts every subscription on the same footing. It shows the full recurring cost, points out which ones account for the biggest share and lets you test the difference that cancelling even one could make.
You might decide every subscription is worth keeping. That's fine. The useful part is knowing what you're paying for the choice, rather than finding out by accident.
The surprisingly sneaky maths of subscriptions
🍕 The secret 13th bill
A $20 subscription charged every four weeks costs $260 a year — not $240. That's because 52 weeks contain thirteen four-week blocks. “Every four weeks” and “every month” look almost identical on a sign-up page, but they don't cost the same.
🍔 Five little subscriptions can turn into one big one
Five subscriptions at $6.99 a month come to $419.40 a year. None of them looks expensive alone, but together they cost more than $400 before anything has gone up in price.
🪙 A dollar a week is a whole year's worth of small change
Just $2 a week becomes $104 a year. Keep it for ten years at the same price and it's $1,040. Tiny numbers become less tiny when they get fifty-two turns at your wallet.
📅 An annual plan can be cheaper without being cheaper for you
Compare $10 monthly with $100 yearly for the same service. The yearly plan is $20 cheaper if you use the whole year — but if you only need it for three months, paying monthly would cost $30, so the “discount” can cost you an extra $70.
How does this subscription calculator work?
The trick is to turn everything into the same period before adding it together. A weekly gym payment and a yearly software renewal can't be compared fairly just by looking at the amount charged each time.
Convert every subscription to a year
Annual subscription cost = amount charged × number of charges per year
| Billing cycle | Times per year |
|---|---|
| Every week | 52 |
| Every fortnight | 26 |
| Every four weeks | 13 |
| Every month | 12 |
| Every two months | 6 |
| Every quarter | 4 |
| Every six months | 2 |
| Every year | 1 |
Once each subscription has an annual cost, the calculator adds those amounts together. The monthly average is the annual total divided by 12. The weekly average is the annual total divided by 52. A five-year cost is five times today's annual total, assuming nothing changes.
A worked example
Imagine four fictional subscriptions: streaming at $18 a month, music at $12 a month, a gym at $20 a week and cloud storage at $6 a month. Their annual costs are $216, $144, $1,040 and $72. Together that's $1,472 a year, or about $122.67 a month.
If you invested the money instead
First, choose which subscriptions you'd hypothetically cancel. The calculator takes their combined yearly cost, divides it by twelve and treats that average as a regular contribution made at the end of each month. It then applies the annual return you enter as a fixed nominal rate, split into twelve monthly periods.
Monthly contribution = selected annual subscription costs ÷ 12
Monthly return = annual return ÷ 12
Balance after each month = prior balance × (1 + monthly return) + monthly contribution
The total you put in is the monthly contribution times the number of months. Projected growth is the modelled ending balance minus that contribution total. The chart shows those two amounts separately so you can see what comes from your own money and what the hypothetical return adds — or subtracts if you try a negative rate.
The closed-form version
Future value = monthly contribution × [((1 + monthly return)^months − 1) ÷ monthly return]
When monthly return is zero: future value = monthly contribution × months
Important assumptions
- The base subscription calculator shows annualised averages, not actual invoices on exact dates.
- Prices remain constant in long-term spending illustrations.
- Investment contributions are averaged monthly even if selected subscriptions originally billed weekly or annually.
- The investment scenario assumes users cancel the selected services and contribute the same amount; it is not a claim that continuing to pay the services generates an investment balance.
- The chosen return is constant for the entire term; real investment results fluctuate, with possible losses.
- No investment fees, tax, inflation, changes in spending, provider increases, introductory offers, penalties or unused subscription periods are modelled.
- A currency selection formats monetary values and does not convert exchange rates.
- These are educational calculations, not personalised financial advice.
Subscription Calculator FAQs
How do I calculate how much my subscriptions cost per month?
Turn each subscription into a yearly amount, add them together, then divide by twelve. That keeps weekly gym payments, monthly streaming fees and annual renewals in the same calculation. The monthly total is an average, not necessarily what will leave your account in any particular calendar month.
Does a four-week subscription count as monthly?
No. Four weeks is 28 days, while calendar months vary in length. A four-week charge generally happens thirteen times across a 52-week year, compared with twelve monthly charges. That's why the calculator keeps the two options separate.
Can I include yearly software plans or annual memberships?
Yes. Choose “Yearly” and enter the amount charged for the whole year. The calculator divides that amount into monthly and weekly averages so you can compare it with your smaller, more frequent subscriptions.
Should I cancel a subscription if it looks expensive here?
Not necessarily. Cost and value are different things. A service you use every day may be worth more to you than a cheaper one you forgot you had. The calculator shows what each one costs; the choice about what to keep is yours.
What if my subscription prices increase?
The multi-year spending figures assume the prices you enter stay the same. Providers may raise or lower prices, so treat a five- or ten-year total as an illustration at today's cost rather than a bill you can predict exactly. Update the figures whenever prices change.
How does the “invested instead” section work?
Select subscriptions you'd hypothetically cancel, choose an annual return and a number of years. The calculator converts their annual cost into an equal month-end contribution, then shows how that money might grow at a fixed compounded rate. It separates the amount you'd contribute from the modelled investment growth.
Is the investment return guaranteed?
No. The selected rate is just an assumption to explore possible outcomes. Investments can go up and down, real returns change over time, and fees, taxes and inflation affect what you keep. The calculator isn't an investment recommendation or a promise about future performance.
Does this calculator save my subscriptions or connect to my bank?
It doesn't connect to your bank or detect charges automatically. You enter the subscriptions yourself, and they are used only while this page is open — nothing is saved to your device and nothing is sent anywhere.
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