BusinessReviewed Methodology
Profit Margin Calculator
A profit margin calculator helps you estimate profit and margin percentage by using revenue and total cost.
Quick answer
Profit equals revenue minus cost.
What this tells you
- •Profit equals revenue minus cost.
- •Margin percentage shows profit as a portion of revenue.
- •Use results as business planning estimates, not guaranteed outcomes.
How to Use
- 1Enter total revenue for the period you want to evaluate.
- 2Enter total cost tied to that same period.
- 3Calculate to see estimated profit and margin percentage.
- 4Compare scenarios to test pricing and cost changes.
How It Works
Formula
Profit = Revenue - Cost
Profit Margin (%) = (Profit / Revenue) x 100The tool calculates profit first, then converts that value into a margin percentage of revenue.
Calculation note: values are processed in the order shown above, using the current input units.
Worked Examples
Simple margin estimate
Revenue$10,000
Cost$7,500
ResultEstimated profit: $2,500 | Estimated margin: 25%
A 25% margin means $0.25 of each revenue dollar remains after costs in this estimate.
Common mistakes
- Mixing costs and revenue from different time periods
- Confusing margin with markup percentage
- Assuming margin percentage guarantees net business profitability
Limitations
This calculator estimates margin using the values entered. It does not automatically include taxes, overhead allocation, financing costs, refunds, or non-operating expenses unless you include them in cost inputs.
Frequently Asked Questions
Margin is based on revenue, while markup is based on cost. They are related but not the same percentage.
Yes. If your cost input represents cost of goods sold, the result can be used as a gross margin estimate.
No. Add those values into your cost input if you want them reflected in the estimate.