Formula
Markup mode: sell price = cost x (1 + markup / 100). Margin mode: sell price = cost / (1 - margin / 100). Profit = sell price - cost.
Contractor Markup & Margin Calculator
Convert cost, markup and margin into a contractor selling price and gross profit.
Worked example
A $500 cost with 40% markup sells for $700, giving $200 profit and a 28.6% gross margin.
Professional note
Professional note: print the input values, formula, result and date together so the calculation can be reviewed later.
Regional and unit assumptions
Basis: transparent planning arithmetic using the visible inputs and assumptions on this page.
Assumptions and limitations
- This calculator is for planning and education, not legal, tax, medical, immigration, engineering or financial advice.
- Use current official rates, contracts, carrier terms, statutes or professional guidance before relying on the result.
- The default values are examples. Replace them with the figures from the job, invoice, contract, bill, service or record being checked.
Methodology & Accuracy
How this calculator is checked
CalculationTime pages are built around visible arithmetic: the formula, assumptions, worked example and practical limitations are shown so the result can be checked rather than simply trusted.
Formula used
Markup mode: sell price = cost x (1 + markup / 100). Margin mode: sell price = cost / (1 - margin / 100). Profit = sell price - cost.
Standard or basis
Basis: transparent planning arithmetic using the visible inputs and assumptions on this page.
Where a calculator follows a named legal, trade or industry standard, that standard is cited visibly. Otherwise the page uses transparent general arithmetic and states its limits.Master's Tip
Professional note: print the input values, formula, result and date together so the calculation can be reviewed later.
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Questions
What is the Contractor Markup & Margin Calculator?
The contractor markup and margin calculator turns job cost into a selling price and shows both markup and gross margin.
Can I rely on this as professional advice?
No. Use it as a transparent planning estimate, then verify the current rule, rate, contract or official source for the decision you are making.