About the Sales Per Square Foot Calculator
This sales per square foot calculator measures how hard your retail space is working. Enter sales for a week, month, quarter or year, the store’s total square footage and its selling area, and it annualizes the sales and divides by each area to give sales per total square foot and sales per selling square foot.
Retailers, landlords, franchise buyers and analysts use the metric to compare stores of different sizes, judge whether a location justifies its rent, and decide whether to expand, shrink or re-merchandise a floor. Adding a gross margin percentage shows gross margin per selling square foot, which is often a better guide than raw sales because it accounts for what each sale actually earns.
Sales are annualized by simple multiplication (a month × 12, a week × 52), so seasonal businesses should use a full year of sales where possible. Selling area should include the sales floor and fitting rooms but exclude stockrooms, offices and back-of-house space.
With the default inputs, the sales per selling sq ft (annual) is $375.00. Change any value above to recalculate instantly.
How to use the sales per square foot calculator
- 1Enter net sales and choose the period they cover.
- 2Enter the total store area and the selling area in square feet.
- 3Optionally add your gross margin percentage.
- 4Read annual sales per selling and per total square foot.
- 5Compare against prior years, other stores or your rent per square foot.
Formula and method
Period sales are first annualized — multiplied by 1 for a year, 4 for a quarter, 12 for a month or 52 for a week — so stores and periods can be compared on the same basis. The annual figure is then divided by total store area and by selling area separately.
Sales per selling square foot is the stricter productivity measure because it ignores stockrooms and offices. Gross margin per selling square foot multiplies that figure by your gross margin percentage, showing how many gross profit dollars each foot of floor produces before rent and other operating costs.
- Annual net sales
- Sales after returns and discounts, annualized
- Total area
- Gross leasable store area in square feet
- Selling area
- Sales floor in square feet
- Gross margin
- (Sales − cost of goods sold) ÷ sales
Worked examples
$1.2M a year in a 4,000 sq ft store
$1,200,000 ÷ 4,000 sq ft = $300 per total square foot, and ÷ 3,200 selling sq ft = $375. At a 40% gross margin each selling square foot earns $150 of gross profit a year.
Boutique with $85,000 monthly sales
Monthly sales of $85,000 annualize to $1,020,000. Divided by 2,500 total sq ft that is $408, and by 1,800 selling sq ft about $566.67. A 50% margin gives roughly $283 of gross profit per selling square foot.
Quarterly sales of $600,000 in 10,000 sq ft
A $600,000 quarter annualizes to $2.4 million. That is $240 per total square foot and $320 per selling square foot.
Frequently asked questions
How do you calculate sales per square foot?+
Divide annual net sales by the store’s square footage. Use selling area for a strict productivity measure or total area for comparisons with rent, which is usually quoted per total square foot.
What is a good sales per square foot?+
It varies enormously by category: grocery, apparel, jewelry and electronics stores all have different norms. The most useful benchmark is your own trend over time and comparable stores in the same category and mall or street.
Should I use gross or net sales?+
Use net sales — gross sales minus returns, allowances and discounts — so the metric reflects revenue you actually keep. Exclude sales tax.
How do I compare sales per square foot with rent?+
Divide annual rent by total square footage to get rent per square foot, then express it as a share of sales per square foot. Occupancy cost as a percentage of sales is a common lease negotiation metric.
Why look at gross margin per square foot?+
Two departments with the same sales per square foot can earn very different profits. Gross margin per square foot (sometimes called GMROF) helps decide which categories deserve more floor space.