Tool · Marketing Efficiency Ratio
MER Calculator
Marketing Efficiency Ratio is the DTC favourite — total revenue ÷ total marketing spend. Enter your numbers to see your blended MER, implied ROAS, and where you sit on the health band.
Your Period Numbers
All paid channels — Google, Meta, TikTok, LinkedIn, Microsoft, influencer fees
Optional — shown in the Period metric tile
Enter revenue and spend to see your MER
Marketing Efficiency Ratio
0×
Set inputs to see verdictWhat your MER means
Every blended ratio has a different next move — here's where to push.
MER below 2×?
You're paying more than $1 of marketing for every $2 of revenue. Audit attribution leakage and channel ROAS — usually one channel is dragging the blend. Pause it, hold spend flat, and watch MER bounce.
MER 3-5×?
Healthy DTC range. Test channel reallocation: shift spend toward your best-performing channel until its diminishing returns kick in. Most brands leave 15-25% of efficient spend on the table because allocation is set quarterly, not weekly.
MER above 5×?
Often a sign of brand-driven revenue. You may be under-investing in paid growth — test 20-30% spend increases to find the new MER ceiling. Better to learn the new equilibrium than leave demand on the table for a competitor.
Frequently asked questions
MER vs ROAS — what's the difference?
ROAS is per-campaign or per-channel; MER is the blended view across every channel including organic-influenced revenue. MER catches halo effects ROAS misses — especially the brand-search lift driven by upper-funnel paid social.
Should I include organic and email in MER?
Include all paid marketing — Google, Meta, LinkedIn, Microsoft, paid email tools, influencer fees. Exclude organic SEO and earned PR unless you separate paid and organic by attribution. Most brands count Klaviyo and TikTok Shop ads in MER but exclude content team headcount.
What's a good MER for ecommerce?
3-5× is healthy. Below 2× is unsustainable for most categories — you're losing money before COGS even enters the picture. Above 5× often signals strong brand demand or a small spend base where one or two channels are doing all the work.
How does MER change as I scale?
Diminishing returns — every doubling of spend usually drops MER 10-20%. Track MER monthly to spot the inflection point where extra spend stops earning back. Brands that scale without watching MER are the ones who suddenly find themselves at 1.8× mid-quarter.
How does Pace help with blended performance?
Pace's Portfolio dashboard blends ROAS, CPA, and CPC across every connected ad account in real time — the same blended-spend math behind MER, in one view across Google, Meta, TikTok, LinkedIn, and Microsoft. AI Sparks fires when ROAS drops more than 25% week-over-week so you catch declines before the quarter ends.
Watch your blended performance every single day.
Pace's Portfolio view blends ROAS, CPA, and CPC across every connected ad account — so you see the cross-channel picture daily, not whenever you can spare an hour for a spreadsheet.
| This calculator | With Pace | |
|---|---|---|
| Frequency | One snapshot | Recomputed daily |
| Channels | Manually summed | Auto-blended across accounts |
| Action | Tells you the number | AI Sparks fires on ROAS drops >25% |
| History | Resets on refresh | Trend lines and audit trail |