Calculator inputs
Enter your current choice and the best alternative. The calculator compares expected benefit, direct cost, time cost, and success probability.
Example data table
| Scenario | Expected Benefit | Direct Cost | Hours | Hourly Value | Probability | Net Adjusted Value |
|---|---|---|---|---|---|---|
| Deep Work Block | $300.00 | $20.00 | 4 | $35.00 | 80% | $80.00 |
| Client Outreach | $420.00 | $30.00 | 3 | $35.00 | 70% | $159.00 |
In this example, choosing Deep Work Block creates an effective opportunity cost of $79.00 because the adjusted value of Client Outreach is higher.
Formula used
These formulas help you compare decisions using money, time, and uncertainty together. That makes the result more practical than a simple cost-only comparison.
How to use this calculator
- Enter the name of the option you plan to choose.
- Add its expected gross benefit, direct cost, required hours, hourly time value, and success probability.
- Enter the same details for the best alternative you may skip.
- Click the calculate button to view the results above the form.
- Review net adjusted values, effective opportunity cost, break-even need, and recommendation.
- Use the CSV or PDF buttons to save your comparison.
Frequently asked questions
1. What is opportunity cost?
Opportunity cost is the value you give up by choosing one option over another. It highlights what you lose when time, money, or effort goes to your selected path instead of the next best alternative.
2. Why does this calculator include time value?
Time is a scarce resource in productivity work. Assigning an hourly value converts time into a comparable cost, so you can judge whether an option is truly worth the hours it consumes.
3. Why use success probability?
Many productivity choices have uncertain outcomes. Success probability adjusts expected benefit so risky opportunities do not look better than they really are. This produces a more balanced comparison.
4. What does effective opportunity cost mean here?
Effective opportunity cost shows how much adjusted value you lose if the alternative is stronger than your chosen option. If the chosen option already leads, this figure becomes zero.
5. Can net adjusted value be negative?
Yes. A negative value means the expected benefit does not cover direct cost and time cost. That can signal poor timing, weak assumptions, or an option that should be redesigned.
6. What is the break-even extra benefit needed?
It estimates how much more gross benefit your chosen option needs to match the alternative. This is useful when you want to improve a plan instead of replacing it immediately.
7. How do hourly productivity scores help?
Hourly productivity shows adjusted value produced per hour. It helps you spot options that may create less total value but use far less time, which matters when schedules are tight.
8. Can teams use this calculator?
Yes. Teams can estimate the value of meetings, projects, campaigns, or process improvements. Use shared assumptions for benefits, cost, and hourly rates to compare competing priorities consistently.