Summary (TL;DR): Most e-commerce stores track revenue but ignore the metrics that explain it. This guide covers the 7 numbers you should check every week: conversion rate, cart abandonment rate, average order value, customer lifetime value, return on ad spend, profit margin, and shipping cost ratio. Each includes a benchmark and a free calculator.
Revenue tells you how your store is doing. These 7 metrics tell you why. Tracking them weekly catches problems early, before a small leak becomes a revenue crisis.
Each metric below includes what it measures, what a healthy benchmark looks like, and a free calculator to compute yours. If you're building your first dashboard, start with these and add complexity later. For a broader e-commerce strategy, see our guide on building a sales funnel that converts.
1. Conversion rate: are visitors buying?
Conversion rate is the percentage of visitors who complete a purchase. It's the single most important metric because it determines how efficiently you turn traffic into revenue.
Formula: (Number of orders / Number of visitors) x 100
Benchmark: 2-3% average, 5%+ for top performers
Why track weekly: A sudden drop often signals a technical issue (broken checkout, slow page, payment error) that costs you sales every hour it goes unfixed.
Calculate yours with our free conversion rate calculator and compare against industry benchmarks.
2. Cart abandonment rate: where are you losing buyers?
70.19% of online shopping carts are abandoned, according to the Baymard Institute. That means for every 10 people who add an item to their cart, only 3 complete the purchase.
Formula: (1 - Completed purchases / Carts created) x 100
Benchmark: 60-70% is average. Below 55% is excellent.
Top abandonment reasons:
- Unexpected shipping costs (48% of abandoners)
- Required account creation (26%)
- Complicated checkout process (22%)
- Couldn't see total cost upfront (21%)
Measure your rate with our free cart abandonment calculator. Then add urgency with a countdown timer widget on your cart page to reduce hesitation.
3. Average order value (AOV): how much per transaction?
AOV measures how much a customer spends per order. Increasing AOV is often easier and cheaper than acquiring new customers.
Formula: Total revenue / Number of orders
How to increase AOV:
- Bundle products together at a slight discount
- Set a free shipping threshold just above your current AOV
- Show "frequently bought together" recommendations
- Offer volume discounts ("Buy 2, get 10% off")
Before running discounts, model the impact on your bottom line with our free discount impact calculator.
4. Customer lifetime value (LTV): what's a customer worth?
LTV tells you how much revenue a single customer generates over their entire relationship with your store. It determines how much you can afford to spend on acquisition and which customer segments to prioritize.
Formula: AOV x Purchase frequency x Customer lifespan
Why it matters: If your LTV is $200 and your customer acquisition cost is $50, you have a healthy 4:1 ratio. If LTV is $60 and CAC is $50, you're barely breaking even.
Calculate yours with our free LTV calculator. For strategies to increase LTV through retention, see our customer retention guide.
5. Return on ad spend (ROAS): are your ads profitable?
ROAS measures how much revenue you earn for every dollar spent on advertising. It's the metric that determines whether to scale, optimize, or kill a campaign.
Formula: Revenue from ads / Cost of ads
Benchmark: A 4:1 ROAS (400%) is generally considered good for e-commerce. Below 3:1, your margins are likely too thin. Above 5:1, you may have room to scale.
Track yours with our free ROAS calculator. For more on driving e-commerce sales through organic channels, which have infinite ROAS, check out our SEO guide.
6. Profit margin: are you actually making money?
Revenue growth means nothing if margins are shrinking. Track profit margin weekly to ensure discounts, shipping costs, and operational expenses aren't quietly eating your profits.
Formula: ((Revenue - Total costs) / Revenue) x 100
Benchmarks by category:
- Apparel: 4-13% net margin
- Electronics: 1-5% net margin
- Health/beauty: 5-20% net margin
- Food/beverage: 3-9% net margin
Calculate yours with our free profit margin calculator. If margins are tight, read our guide on e-commerce strategies to improve sales.
7. Shipping cost ratio: is delivery eating your margin?
Shipping is often the hidden margin killer. If shipping costs exceed 10-15% of your order value, it's time to renegotiate rates or adjust your pricing strategy.
Formula: Total shipping costs / Total revenue x 100
Ways to reduce shipping costs:
- Negotiate volume discounts with carriers
- Use flat-rate packaging where possible
- Set free shipping thresholds that increase AOV
- Consider regional fulfillment centers for high-volume areas
Estimate your per-order shipping costs with our free shipping cost calculator.
Build your weekly metrics dashboard
Track all 7 metrics in a simple spreadsheet or dashboard. Here's a suggested weekly review format:
- Monday: Check conversion rate and cart abandonment from the previous week. Flag any drops greater than 10%.
- Compare AOV to the 4-week average. If it's declining, check whether discount usage has increased.
- Review ROAS for each active ad campaign. Pause anything below 3:1.
- Monthly: Recalculate LTV and profit margins. These move slower but matter more.
The stores that grow fastest aren't the ones with the most traffic. They're the ones that find and fix revenue leaks before they compound. For more tools to optimize your store, browse our full collection of free e-commerce tools.
Sergei Davidov
