How is the annual cost calculated?

The calculator multiplies cost per occurrence by frequency (daily = 365×, weekly = 52×, monthly = 12×) and the number of times per period to arrive at a yearly total.

What does the investment projection show?

If you redirected the same money into an investment earning 7% annual return, the projection shows how much that would grow to over 5 and 10 years — using compound interest.

Can I add multiple habits?

Yes. Use the "Add another habit" button to stack multiple habits and see a combined yearly and multi-year total.

Does this include inflation?

No. The calculator uses today's price as a constant. Real costs typically rise with inflation, so the projection is a conservative lower bound.

Is my data saved anywhere?

Nothing is sent to a server. All calculations happen in your browser and habit entries are not persisted after you close the tab.

Annual Cost of Habit Calculator

Name: Annual Cost of Habit Calculator
Availability: InStock
Author: Nham Vu

Enter a recurring expense and its frequency to see the true yearly and multi-year cost of that habit.

Summary

Enter a recurring expense and its frequency to see the true yearly and multi-year cost of that habit.

How it works

Enter the cost per occurrence and how often the habit occurs.
The calculator annualizes the cost (daily × 365, weekly × 52, monthly × 12).
Multi-year totals and a 7% compound investment projection are computed instantly.
Add more habits to see a combined financial impact summary.

Use cases

Find out how much you spend on coffee, cigarettes, or alcohol per year.
Evaluate whether a subscription or gym membership is worth keeping.
Motivate a spending change by seeing a 10-year cost projection.
Compare the financial impact of multiple habits side by side.
Use the opportunity cost view to see potential investment growth.
Plan a budget by quantifying all recurring discretionary expenses.

Frequently Asked Questions

Last updated: 2026-06-09 · Reviewed by Nham Vu