Opportunity Cost Calculator

Opportunity cost is the value of the best realistic alternative you give up. This calculator makes that forgone value visible beside the direct result of each option.

Value the chosen and forgone uses

Use one unit, such as dollars, hours saved, or capacity points, for every field.

Example starting point

Option ADirect value from this choiceBest forgone alternative value

Option BDirect value from this choiceBest forgone alternative value

Net choice value

The result subtracts the best realistic forgone value from each option's direct value.

What belongs in the forgone alternative

Use the best realistic alternative available to the same resource. Do not compare a practical option with an imaginary perfect use of money or time.

Avoid double counting

If direct value already includes time saved, do not add the same time again as a separate alternative benefit.

Record the scarce resource

The result becomes clearer when you name whether money, calendar time, team capacity, attention, or physical space is actually constrained.

Opportunity-cost audit

A manager has eight staff hours. Option A uses all eight on a report worth an estimated 900. The next-best use of those hours is resolving support cases worth 500, leaving a net choice value of 400. Option B creates a smaller report worth 700 but uses only four hours; the displaced work for those four hours is worth 250, leaving 450. The direct values alone favor A, while the scarce-capacity comparison favors B.

Questions to write beside the inputs

Would the forgone work really occur in the same period?
Does its value use the same unit and time horizon?
Is unused capacity actually transferable to that work?
Has any saved time already been counted in direct value?

If the answer to the transfer question is no, reduce the forgone value. A theoretical alternative that cannot be scheduled is not the opportunity being lost. Recheck the values when the constrained resource changes.

Record the constrained resource and confirm the alternative could really use it.

Continue with a full decision record

Use the two-option comparison engine to preserve constraints, evidence, and missing facts beside this calculation. Read the EITHER.SO comparison methodology before treating any calculated lead as final.

Interpret the forgone alternative

Separate a realistic next-best use from imaginary perfection and avoid counting the same resource twice.

What counts as the forgone alternative?

Use the best realistic use of the same scarce resource that you would actually choose next. It may be another purchase, an hour of work, available team capacity, or preserved cash. Do not compare a practical choice with an imaginary perfect alternative.

Read the opportunity-cost guide

Can opportunity cost use hours instead of money?

Yes. Every input may use hours, capacity points, or another consistent unit. The direct value and forgone value must use the same unit within the comparison for the subtraction to be meaningful.

Compare the value of time saved

How do I avoid double counting?

Define what the direct value already includes. If it already includes time saved or displaced work, do not add that benefit again as the forgone alternative. Keep a short note beside every input showing its source and scope.

Audit decision criteria for overlap

Connect scarce resources to the decision

Use the result to set priorities, value constrained capacity, and make displaced work explicit.

Opportunity cost for two choices

Name the scarce resource and identify the best realistic alternative use.

Read the opportunity-cost guide

Value saved time

Separate claimed time savings from time that can actually be used elsewhere.

Compare travel time with ticket cost

Build a full comparison

Keep the forgone alternative beside constraints, evidence, and practical consequences.

Use the two-option comparison engine