The margin works like this: it converts between margin and markup and derives selling price, cost and profit from any two inputs. Everything happens on your device - the input never leaves your tab unless the tool clearly states it performs a server-side lookup.
How to use the Margin Calculator
Enter the amounts, rates or periods involved.
Check the compounding or tax assumptions shown beside each field.
Read the full breakdown, not just the headline number.
Vary one input to stress-test the plan.
Features
Calculate profit margin and markup percentage
Instant result, no page reload
Works in any modern browser, desktop or mobile
Free with no signup
Common mistakes to avoid
Mixing monthly and annual figures in one calculation
Forgetting taxes and fees that sit outside the model
Examples
Input
Result
Cost 60, target margin 40%
Price 100 · markup 66.7% · profit 40
Best used for
Getting a reliable answer for margin without installing an app
One-off tasks done in under a minute from any device
Checking results before committing them to something important
Working on a phone where desktop software is unavailable
Privacy
Calculations run in your browser; enter figures only you can see.
Frequently asked questions
Margin vs markup - the eternal confusion?
Margin is profit / price; markup is profit / cost. A 40% margin equals a 66.7% markup - quoting the wrong one silently destroys pricing.
What is the difference between margin and markup?
Margin is profit as a share of the selling price; markup is profit as a share of the cost. A 50% markup is only a 33% margin - confusing the two quietly destroys pricing.
Which inputs do I need for a selling price?
Any two of cost, selling price and profit - the third is derived, along with both margin and markup views of the same numbers.