Cost of Sales Calculator
No registration, software installation, or subscription is required.
What Is Cost of Sales?
Cost of Sales represents the direct costs associated with producing or purchasing the goods sold during a specific accounting period.
It generally includes:
Opening inventory
Purchases
Freight or delivery-in costs (where applicable)
Direct manufacturing costs
Direct labor (where applicable)
Less closing inventory
Knowing your Cost of Sales helps you calculate gross profit, monitor inventory performance, and make informed pricing decisions.
What Can the Cost of Sales Calculator Calculate?
Our calculator can calculate:
Cost of Sales (COGS)
Gross Profit
Gross Profit Margin
Inventory Consumption
Total Purchases
Inventory Movement
Revenue after Cost of Sales
Cost Percentage
Gross Margin Percentage
Product Cost Analysis
Cost of Sales Formula
Standard Cost of Sales Formula
Cost of Sales = Opening Inventory + Purchases − Closing Inventory
Example:
Opening Inventory = 8,000
Purchases = 25,000
Closing Inventory = 6,500
Cost of Sales = 26,500
Gross Profit Formula
Gross Profit = Sales Revenue − Cost of Sales
Example:
Sales Revenue = 50,000
Cost of Sales = 26,500
Gross Profit = 23,500
Gross Profit Margin Formula
Gross Profit Margin (%) = (Gross Profit ÷ Sales Revenue) × 100
Example:
Gross Profit = 23,500
Revenue = 50,000
Gross Margin = 47%
Cost Percentage Formula
Cost Percentage = (Cost of Sales ÷ Sales Revenue) × 100
Example:
Cost of Sales = 26,500
Revenue = 50,000
Cost Percentage = 53%
How to Use the Cost of Sales Calculator
Enter your opening inventory value.
Enter purchases made during the period.
Enter your closing inventory value.
Enter sales revenue (optional for profit calculations).
Click Calculate.
Instantly view:
Cost of Sales
Gross Profit
Gross Margin
Cost Percentage
Example Calculations
Example 1 – Retail Business
Opening Inventory: 15,000
Purchases: 40,000
Closing Inventory: 12,000
Cost of Sales: 43,000
Revenue: 70,000
Gross Profit: 27,000
Gross Margin: 38.57%
Example 2 – Wholesale Business
Opening Inventory: 25,000
Purchases: 120,000
Closing Inventory: 30,000
Cost of Sales: 115,000
Revenue: 180,000
Gross Profit: 65,000
Example 3 – Small Business
Opening Inventory: 3,500
Purchases: 12,000
Closing Inventory: 2,500
Cost of Sales: 13,000
Revenue: 20,000
Gross Profit: 7,000
Example 4 – Manufacturing Business
Opening Inventory: 55,000
Purchases and Direct Costs: 145,000
Closing Inventory: 48,000
Cost of Sales: 152,000
Revenue: 250,000
Gross Profit: 98,000
Why Use Our Cost of Sales Calculator?
Our calculator helps you:
Calculate Cost of Sales accurately
Estimate gross profit instantly
Measure business profitability
Improve pricing strategies
Monitor inventory performance
Prepare financial reports
Support budgeting and forecasting
Simplify accounting calculations
Reduce manual calculation errors
Save time
Who Can Use This Calculator?
Ideal for:
Small businesses
Retail stores
Wholesalers
Manufacturers
Importers
Exporters
E-commerce businesses
Restaurants
Distributors
Inventory managers
Accountants
Bookkeepers
Financial analysts
Business owners
Students studying accounting or finance
Understanding Cost of Sales
Cost of Sales reflects the direct cost of goods that were sold during a reporting period. It does not usually include indirect operating expenses such as office rent, marketing, administration, or general utilities.
Monitoring Cost of Sales alongside revenue can help businesses evaluate pricing, inventory efficiency, and overall profitability.