How many hours
did that really cost?
Enter your salary, enter a purchase, and see the answer in hours, days, or weeks of actual work. No signup. No tracking. Just arithmetic, reframed.
What this actually tells you
The calculator does one line of math: it divides the price by your hourly wage and returns the duration. The point isn't the arithmetic — you could do that on a napkin. The point is that seeing a price as "three hours of next Tuesday" is psychologically different from seeing it as "$75". The first one commits a specific piece of your life. The second one abstracts it away.
This framing has a long history. Vicki Robin and Joe Dominguez formalized it in 1992 in Your Money or Your Life; the idea has been rediscovered by every generation since. HourSpend is a modern, digital version of the same old question: is this worth the life-hours it costs?
How it works
- Monthly salary — use your gross (pre-tax) salary to start. Later, you can subtract taxes and mandatory expenses for your real hourly wage (usually 30-50% lower).
- Work hours per week — 40 is the default. Salaried workers: use the hours you actually work, not the hours your contract claims.
- Price — whatever you're considering. The calculator shows you the duration, not a verdict. You decide if it's worth it.
The real hourly wage adjustment
Your gross hourly rate overestimates what you actually keep. The real rate subtracts:
- Income tax, social security, health insurance
- Commute time (unpaid) and commute cost
- Work clothes, lunches out, coffee to stay awake
- Stress-decompression purchases you wouldn't make if you didn't work
After those subtractions, most people's real hourly rate comes out 30-50% below their gross. A $40/hr white-collar job often works out to $22-28/hr of actual life-energy. Plug that number into the calculator to get the version that matches your real trade-off.
Frequently asked
Is this calculator free?
Yes. No signup, no tracking, no cookies. The math runs entirely in your browser.
How accurate is this?
As accurate as the numbers you put in. If you want the most accurate picture, use your real hourly wage (after the subtractions above) and include the full cost of the purchase (not just the sticker — think shipping, sales tax, recurring fees).
Can I use this for my own currency?
Yes — the calculator is currency-agnostic. Type numbers in whatever currency you like. The ratio is what matters.
Is there an app that does this automatically?
Yes — the HourSpend iOS app logs every expense and shows the running hour count. Download free on the App Store.
Why hours and not dollars?
Dollars are fungible — one spends identically to another. Hours are not. You get roughly 4,000 weeks in a life, and each one you trade for money is gone. Making the trade visible at the point of purchase is what shifts the decision.
Want this automatically? The HourSpend iOS app does the math on every expense you log — no manual calculator needed. Free to start.
Get the app