ROAS Calculator

Compare advertising revenue with ad spend to calculate ROAS. Enter your own values below to see return on ad spend and check the method behind it.

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Your inputs

Change the example values to match your situation.

Your result

Let’s work it out.

Fill in your inputs and select Calculate.
Your result and breakdown will appear here.

How this calculator works

Return on ad spend = Advertising-attributed revenue ÷ Advertising spend.

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What is ROAS Calculator?

ROAS Calculator helps you compare advertising revenue with ad spend to calculate ROAS.

The main result is return on ad spend. The formula, example and assumptions below explain how to interpret it.

How to use ROAS Calculator

Use the example to get familiar with the form, then enter your own figures. Any rates in the example are illustrative. Check the field labels and units before calculating.

  1. Gather advertising-attributed revenue and advertising spend. Use values from the same situation or reporting period.
  2. Replace the example advertising-attributed revenue with your own value, then complete the other fields. Check the displayed units.
  3. Select Calculate and read return on ad spend. Change one input and calculate again to compare a second scenario. Reset restores the original example.
  • Enter advertising-attributed revenue, at least 0. Decimals are accepted.
  • Enter advertising spend, at least 0.000001. Decimals are accepted.

ROAS Calculator: a worked example

With the inputs below, the result is 0.2 × (return on ad spend). Follow the example, then replace these illustrative values with your own.

Example inputs and output
Input or outputExample value
Advertising-attributed revenue200
Advertising spend1,000
Return on ad spend0.2 ×

Understanding the ROAS result

The main output is return on ad spend, expressed in ×. It applies to the inputs and operation you selected.

Displayed results use a readable number of decimal places. When checking a result by hand, keep extra precision until the last step. To compare scenarios, change one input at a time and keep the others fixed.

ROAS Calculator: assumptions and common mistakes

A useful estimate starts with the right inputs. Check the following assumptions and limits before applying the result to your situation.

  • Separate revenue from cash receipts and cost from selling price. Check the denominator before comparing a margin with a markup.

For wider guidance, visit ICAI. The formula and scope of this specific tool are stated on this page.

ROAS Calculator FAQs

What does ROAS Calculator calculate?

ROAS Calculator helps you compare advertising revenue with ad spend to calculate ROAS. Its main output is return on ad spend in ×.

What inputs do I need for ROAS Calculator?

You need advertising-attributed revenue and advertising spend. Use the field labels and units to match your figures to the formula.

Which formula does ROAS Calculator use?

Return on ad spend = Advertising-attributed revenue ÷ Advertising spend.

What is a worked example for ROAS Calculator?

Example inputs: Advertising-attributed revenue: 200; Advertising spend: 1,000. The result is 0.2 × (return on ad spend).

How should I enter advertising-attributed revenue?

Enter advertising-attributed revenue, at least 0. Decimals are accepted.

How do I choose advertising spend?

Enter advertising spend, at least 0.000001. Decimals are accepted. The example uses 1,000; replace it if your circumstances differ.

How should I read return on ad spend?

The main output is return on ad spend, expressed in ×. It applies to the inputs and operation you selected.

Why might my ROAS Calculator result differ from my records?

Separate revenue from cash receipts and cost from selling price. Check the denominator before comparing a margin with a markup. Differences in entered values, units or rounding can also change the comparison.

Can I compare two scenarios in ROAS Calculator?

Yes. Note your first return on ad spend, change advertising-attributed revenue or another input, and select Calculate again. Editing a field clears the old result so it is not mistaken for a new calculation.

Is ROAS Calculator free, and where are my inputs calculated?

This calculator is free to use without signing in. Its formula runs in your browser; calculator inputs are not sent to a calculation API. The inputs reset to the example values when you reset the form or start a fresh page.