profit margin calculator — the complete guide

This guide covers the Profit Margin Calculator end to end: what it does, what each field means, the formula behind it, worked examples, and the limits of the result. If you only need the answer, enter your numbers and read the headline. If you want to trust the answer, read on.

The inputs, in order, are the numbers the formula needs — no more, no less. Enter them in the units shown beside each field, and check the units before you move on: a unit slip is the single most common cause of a wrong result with any calculator.

Worked example: Sell at ₹1,200 with a cost of ₹800: the profit is ₹400, and the margin is ₹400 ÷ ₹1,200 = 33.33%. The formula behind that example is: Margin = (selling price − cost) ÷ selling price × 100; profit = selling price − cost. Run those numbers through the calculator and confirm the result matches. Then try your own numbers, one field at a time, so you can see which input moves the answer most.

The limits: Margin and markup are not the same number: the same sale has a markup of ₹400 ÷ ₹800 = 50%, but a margin of 33.33%. Within those limits, the calculator is exact arithmetic on the inputs you gave it. Outside them, it is still exact arithmetic — but on a question you did not mean to ask.

Frequently asked questions

What does this guide cover that the tool page does not?

The same calculation, explained in full: every field, the formula, worked examples, common mistakes, and the limits of the result.

Where do I find the tool itself?

Through the button at the end of this guide, or from the site’s tool list. The guide and the tool use the same formula and the same worked example.

Is the result a promise or a guarantee?

Neither. It is arithmetic on the inputs you entered. Real outcomes vary with rates, prices and circumstances the calculator cannot see.

More guides on the Profit Margin Calculator

• How to use the Profit Margin Calculator — step by step
• Profit Margin Calculator explained with worked examples
• Profit Margin Calculator formula — how it actually works
• Profit Margin Calculator for beginners — start here
• Common mistakes people make with the Profit Margin Calculator
• Profit Margin Calculator vs doing it by hand — which is faster?
• How to get an accurate result from the Profit Margin Calculator
• Profit Margin Calculator for students — with examples
• Profit Margin Calculator for homeowners and DIYers