Performance

MER vs ROAS calculator

ROAS divides revenue by ad spend only. MER divides revenue by all marketing spend: ads, agency fees and tooling. Enter your own numbers to see both side by side.

MER vs ROAS calculatorCalculator

Monthly revenue$100,000

Net new + recurring

Ad spend (monthly)$18,000

All paid channels combined

Agency / freelancer fee$8,000

Marketing-related fees

Tooling subscriptions$1,500

Marketing stack

Result

3.64xMER (true)

$3.64 of revenue per $1 of total marketing spend

MER (revenue / all mktg spend)

3.64x

0 → 6x

ROAS (ad-only)

5.56x

0 → 6x

ROAS gap over MER

1.92x

bigger gap = more spend outside ads

This is arithmetic on your inputs. Your account will differ.

How the two differ

ROAS divides revenue by ad spend only. MER divides revenue by ads, agency fees and tooling together. A large gap between the two means the non-ad spend is big next to the ad spend. Both use the same revenue figure. The starting values are examples you change.

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