Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Profit Margin Calculator

Calculate the gross profit margin — the percentage of every sales dollar that remains after paying for the goods sold. Use it to set product prices, evaluate deals, and benchmark against industry margin targets.

Cost Price ($)

Selling Price ($)

Accounting

Return on Investment (ROI) Calculator

Compute the annualized return on an investment from its initial cost, final value, and the time it was held — putting investments of different durations on a common, comparable scale. Use it to evaluate whether a stock, real estate deal, or business investment outperformed alternatives like an index fund.

Initial Investment ($)

Final Value ($)

Investment Period (years)

Period Type

Key differences

	Profit Margin Calculator	Return on Investment (ROI) Calculator
Category	Ecommerce	Accounting
Inputs required	2	4
Result	Profit Margin (%)	Annualized ROI (%)
What it does	Calculate the gross profit margin — the percentage of every sales dollar that remains after paying for the goods sold. Use it to set product prices, evaluate deals, and benchmark against industry margin targets.	Compute the annualized return on an investment from its initial cost, final value, and the time it was held — putting investments of different durations on a common, comparable scale. Use it to evaluate whether a stock, real estate deal, or business investment outperformed alternatives like an index fund.