Define direct cost
Decide which user-supplied costs belong in this gross comparison before entering one total.
Five exact pricing relationships
Know which percentage your profit is measured against.
MarginCalc connects direct cost, selling price, gross profit, margin, and markup. Exact rational arithmetic keeps both denominators visible, while every entered value remains in the browser.
No account, upload, price feed, tax table, product catalog, or generated result URL.
Three visible checks
Define cost, choose a base, reverse-check
Name the denominator
Use selling price for margin and direct cost for markup; never let the word percentage hide the base.
Reverse the formula
Rebuild price, cost, or rate from the result so a display value is supported by the same exact relationship.
Five focused modes
Use the pricing relationship you actually know
- Find margin and markup from cost and selling price.
- Set selling price from cost and target margin.
- Set selling price from cost and target markup.
- Find allowable cost from price and target margin.
- Convert margin and markup without a money amount.
Check the denominator
Price with the percentage you actually mean
Enter the values you know, keep margin and markup side by side, and verify which costs your decision still needs to include.