Inventory Calculators: Stock Costs and Order Planning

Use these inventory calculators to understand what stock costs, how quickly it sells, and how much to order. Ending Inventory, Beginning Inventory, and Average Inventory Ending Cost help track the value of goods on hand, while FIFO Inventory Cost and Cost of Goods Sold support accounting and financial reporting. Days in Inventory shows how long products typically remain in stock, and Economic Order Quantity helps estimate an efficient purchase size. Retailers, warehouse managers, small business owners, and accounting students can use these tools to plan purchases, review stock performance, and check inventory figures.

Simple Moving Average

Enter a series of prices (e.g. daily closing prices) and this calculator instantly returns their Simple Moving Average (SMA) and the number of periods used. SMA smooths out price noise to reveal the underlying trend.

Days in Inventory

Calculate how many days your company holds inventory before selling it. Enter average inventory, cost of goods sold, and the period length to measure inventory efficiency and turnover speed.

Inventory Stock

Calculate the inventory stock you have on hand by entering your beginning inventory, purchases, and units sold or used. Useful for retail, warehouse, and production planning.

Cost of Goods Sold

Calculate Cost of Goods Sold (COGS) from your beginning inventory, purchases, and ending inventory. Enter the three values to find COGS for gross profit, pricing, and tax reporting.

Sharpe Ratio

Calculate the Sharpe Ratio to measure an investment's risk-adjusted return. Enter your portfolio return, the risk-free rate, and the standard deviation of returns to see how efficiently your portfolio is rewarded for the risk taken.

Economic Order Quantity

Calculate the Economic Order Quantity (EOQ) — the optimal order size that minimizes total inventory costs. Enter annual demand, ordering cost per order, and holding cost per unit per year.

Beginning Inventory

Calculate the beginning inventory of an accounting period from ending inventory, cost of goods sold (COGS), and purchases. Enter three values to find the inventory value at the start of the period.

Find Inventory Cost

Calculate the total cost of your inventory instantly. Enter the number of units and the cost per unit, and the calculator returns the total inventory value in dollars.

Residual Value

Estimate an asset's residual value from its original cost, annual depreciation and useful life. Enter three figures to see the remaining value at the end of the asset's service period.

Income Elasticity of Demand

Calculate income elasticity of demand (YED) from the change in quantity demanded and consumer income. Enter the initial and new values to classify a good as normal, luxury, or inferior.

Sales Gross Profit Margin

Calculate gross profit margin and gross profit from your sales revenue and cost of goods sold (COGS). Enter two numbers to see what share of every sales dollar stays after production costs, plus an instant interpretation.

Return on Equity

Calculate Return on Equity (ROE) from net income and average shareholder's equity. Enter your figures to see how efficiently a company turns shareholders' capital into profit, with an instant interpretation.

Discount Lost

Calculate the annualized cost of skipping an early payment discount. Enter the discount percentage, discount period, and full payment term (e.g., 2/10, net 30) to see what not paying early really costs you.

Average Inventory Ending Cost

Calculate the average inventory from your beginning and ending inventory values. Enter both figures in dollars and get the average instantly — a key input for inventory turnover, DSI, and stock management.

Cross Price Elasticity of Demand

Calculate the cross price elasticity of demand between two goods. Enter the quantity of Good A and the price of Good B before and after a change to see whether the goods are substitutes or complements.

Weighted Average Cost of Capital

Calculate the Weighted Average Cost of Capital (WACC) from equity value, debt value, cost of equity, cost of debt and the corporate tax rate. Enter the five inputs to get your company's blended financing cost in percent.

Depletion Expense

Calculate the depletion expense for natural resources such as oil, gas, minerals, or timber. Enter the total cost, salvage value, estimated units, and units extracted to get the expense for the period.

Pivot Points

Calculate the classic floor pivot point from the previous session's high, low, and close prices. Enter the three values and get the level that traders use to judge market direction and potential turning points.

Asset Depreciation

Calculate straight-line depreciation for any asset. Enter the initial cost, salvage value, useful life, and a target year to get the annual depreciation, accumulated depreciation, and book value at the end of that year.

Percent Off

Enter the original price and the sales price to instantly find the percent off (percentage discount). A quick tool for shoppers and retailers to verify real savings during sales and promotions.

Ending Inventory

Calculate ending inventory instantly: enter your beginning inventory, net purchases, and cost of goods sold (COGS) to find the value of stock remaining at the end of an accounting period.

Acid Test Ratio

Calculate the Acid Test (Quick) Ratio by entering cash, marketable securities, accounts receivable and current liabilities. See instantly whether a company can cover its short-term obligations without selling inventory.

FIFO Inventory Cost

Calculate the cost of your ending inventory using the FIFO method. Enter the units remaining in stock and the units and cost per unit of up to three purchase batches.

Insolvency Ratio

Calculate the insolvency ratio by entering total liabilities and total assets. This tool shows how much of a company is financed by debt and interprets the level of insolvency risk.

Solvency Ratio

Calculate the solvency ratio from net income, depreciation, and total liabilities to see how well a company can cover its long-term obligations. Enter your figures to get an instant percentage with an interpretation.

Employee Revenue

Calculate revenue per employee from your total annual sales and headcount. Get both yearly and monthly figures to benchmark workforce productivity, plan staffing, and track operational efficiency.

Accelerated Depreciation

Calculate accelerated depreciation using the Double Declining Balance (DDB) method. Enter the asset's initial cost, salvage value, useful life and the year to get the depreciation expense and book value for that year.

Price Elasticity of Supply and Demand

Calculate price elasticity of supply or demand from an initial and new quantity and price. Enter the before and after values to see how sensitive quantity is to a price change, with an instant interpretation.

Return on Capital Employed

Calculate Return on Capital Employed (ROCE) from operating profit (EBIT) and capital employed. See the formula, a worked example, and how to interpret the result.

Average Collection Period

Calculate the average collection period to find out how many days it takes your business to collect payments from credit customers. Enter accounts receivable, net credit sales, and the period length.

Gross Domestic Product

Calculate Gross Domestic Product (GDP) using the expenditure approach. Enter personal consumption, gross investment, government spending, exports and imports to get GDP instantly.

Total Asset Turnover

Enter net sales and the total assets at the beginning and end of a period to calculate the Total Asset Turnover ratio — how many dollars of revenue the company generates per dollar of assets.

Break Even

Calculate the break-even point in units: enter your fixed costs, selling price per unit, and variable cost per unit to find out how many units you must sell before your business starts making a profit.

Operating Expense Ratio

Calculate the Operating Expense Ratio (OER) — the percentage of net sales consumed by operating expenses. Enter your operating expenses and net sales to measure cost efficiency.

Operating Profit Margin

Calculate operating profit margin from operating income (EBIT) and net sales. Enter two numbers to see what percentage of revenue your business keeps after operating expenses.