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Fixed Costs Calculator

Estimate your total fixed business costs and the average fixed cost per month, week, day, or unit sold.

Your Details

Overview

A fixed costs calculator helps you total recurring business expenses such as rent, salaries, insurance, subscriptions, and other overheads. By entering your costs for a monthly, weekly, or annual period, you can quickly see your total fixed costs and estimate the fixed cost per unit sold.

How it works

The calculator adds together your recurring fixed expenses to give a total for the selected period. It then divides that total by the number of units sold to estimate fixed cost per unit. It also shows simple monthly conversions so you can compare costs more easily across different reporting periods.

How to use this calculator

  1. 1Enter your rent or lease cost.
  2. 2Add salaries, insurance, subscriptions, and other fixed expenses.
  3. 3Choose whether your figures are monthly, weekly, or annual.
  4. 4Enter the number of units sold in the same period.
  5. 5Review your total fixed costs and fixed cost per unit.

Example Calculation

Rent or Lease

$2,000

Salaries and Admin Wages

$5,000

Insurance

$300

Software and Subscriptions

$200

Other Fixed Costs

$500

Cost Period

monthly

Units Sold in Period

1000

Total Fixed Costs

$8,000

With monthly fixed costs of 8000 and 1000 units sold, the fixed cost per unit is 8.00.

Frequently asked questions

What are fixed costs?

Fixed costs are business expenses that usually stay the same in the short term, regardless of how much you produce or sell. Common examples include rent, insurance, and salaried admin staff.

Does this calculator include variable costs?

No. This calculator is designed for fixed costs only. Variable costs such as raw materials, packaging, or sales commissions should be tracked separately.

Why is fixed cost per unit useful?

Fixed cost per unit helps you understand how overhead is spread across your sales volume. It can support pricing decisions and break-even planning.

Should I enter monthly, weekly, or annual costs?

You can use any of those periods, but all costs and units sold should match the same period to keep the result consistent.

What if a cost is partly fixed and partly variable?

If an expense changes with output, only include the fixed portion here. Keep the variable portion separate for more accurate analysis.

Explore Related Calculators

Variable Costs CalculatorEstimate your total variable costs, variable cost per unit, contribution margin, and break-even sales volume based on production and pricing inputs.Calculate →Operating Cost CalculatorEstimate your total operating costs, cost per unit, and operating profit based on fixed costs, variable costs, sales volume, and selling price.Calculate →Cost of Goods Sold CalculatorCalculate cost of goods sold using beginning inventory, purchases and ending inventory to estimate the direct cost of items sold.Calculate →Contribution Margin CalculatorCalculate contribution margin, contribution margin ratio, and break-even sales from your selling price, variable cost, fixed costs, and units sold.Calculate →

Assumptions and warnings

Assumptions

  • Fixed costs are treated as expenses that stay broadly the same regardless of output or sales volume.
  • All amounts entered are for the same time period.
  • The fixed cost per unit is based on the units sold entered for that same period.
  • Results are estimates and do not include variable costs unless you add them manually to other fixed costs.

Warnings

  • This calculator provides an estimate only and should be used alongside your own business records.
  • Fixed and variable costs can overlap in some businesses, so classify expenses carefully before relying on the result.