Marketing ROI Calculator: How to Measure Your Direct Mail & Review Card Results

Stop guessing whether your marketing is working. Here's exactly how to calculate ROI for every channel.

Direct Mail ROI Formula

Key Metrics to Track

Metric	How to Track	Target
Response rate	Unique phone #, QR code, or coupon code	2-5% (first touch)
Cost per response	Campaign cost ÷ responses	$20-80
Conversion rate	Jobs booked ÷ responses	25-40%
Cost per acquisition	Campaign cost ÷ new customers	$50-200
Average job value	Revenue ÷ jobs from campaign	Varies by trade
Lifetime value	Average annual spend × years retained	3-10x first job

ROI by Campaign Size

Campaign	Cost	Expected Responses	If Avg Job = $500	If Avg Job = $2,000
Test Strike (250 doors)	$397	5-12	ROI: 163-1,412%	ROI: 1,151-5,944%
Block Buster (500 doors)	$697	10-25	ROI: 259-1,694%	ROI: 1,336-6,976%
Street Sweeper (1,000)	$1,197	20-50	ROI: 335-1,789%	ROI: 1,539-7,352%
Takeover (2,500)	$2,497	50-125	ROI: 401-2,003%	ROI: 1,802-8,210%

Google Review ROI Calculation

Vehicle Graphics ROI

• Cost: $800 lettering / $3,500 full wrap (one-time, lasts 5-7 years)
• Impressions: 30,000-70,000 per day in Ontario urban areas
• Annual impressions: 8.4M-18.2M
• CPM: $0.04-0.08 (vs $3.56 for billboards, $7.50+ for Google Ads)
• Payback: Most businesses recover the investment within 1-3 months from inquiries generated

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