Break-Even Calculator

What Is a Break-Even Calculator?

A break-even calculator determines how many units you need to sell before your total revenue covers your total costs. At the break-even point, there is no profit and no loss. The calculation uses your fixed costs, variable cost per unit and selling price per unit to identify the sales volume required to cover those costs.

This calculator is useful for businesses, retailers, manufacturers, freelancers and service providers who want to understand the sales volume required to cover their costs. It can also help when evaluating prices, planning a new product or testing different cost and sales assumptions.

Why Use Break-Even Calculator?

Understanding your break-even point can make pricing and sales planning easier by showing the minimum level of sales needed to cover your costs.

How to Use Break-Even Calculator

Enter the relevant cost and pricing figures, then calculate the break-even point to see the required sales volume and revenue.

1. Select a currency — Choose the currency you want to use for your cost, price and revenue figures.
2. Enter your fixed costs — Add costs such as rent, salaries, insurance or other expenses that remain relatively constant regardless of sales volume.
3. Enter variable cost and selling price — Enter the variable cost incurred for each unit and the price charged for each unit sold.
4. Calculate the break-even point — Select the calculation button to see your break-even units, break-even revenue, contribution margin and related results.

How to Calculate the Break-Even Point

The break-even point is calculated by dividing fixed costs by the contribution margin per unit. The contribution margin per unit is the selling price per unit minus the variable cost per unit. This shows how much of each sale is available to contribute towards fixed costs.

For example, if a business has £10,000 in fixed costs, a selling price of £50 per unit and a variable cost of £20 per unit, the contribution margin is £30 per unit. Dividing £10,000 by £30 produces a break-even point of approximately 333.33 units. In practical terms, the business would need to sell 334 units to fully cover its costs.

Break-Even Units Formula

The standard formula is: Break-Even Units = Fixed Costs ÷ (Selling Price Per Unit − Variable Cost Per Unit). The result represents the mathematical number of units that need to be sold for total revenue and total costs to be equal.

Break-Even Revenue Formula

Break-even revenue can be calculated by multiplying the break-even number of units by the selling price per unit. It can also be calculated by dividing fixed costs by the contribution margin ratio, provided the ratio is positive.

Understanding Break-Even Results

The contribution margin per unit shows how much remains from each sale after the variable cost has been deducted. A higher contribution margin generally means fewer units are required to cover fixed costs. The contribution margin ratio expresses this contribution as a percentage of the selling price.

If the selling price is equal to the variable cost per unit, there is no contribution towards fixed costs and a conventional break-even point cannot be reached. If the selling price is below the variable cost, each additional sale produces a negative contribution margin, meaning there is no break-even point under those assumptions.

The calculator assumes the supplied figures remain constant and does not automatically account for taxes, discounts, commissions, changing production costs, stepped fixed costs, multiple products or changes in sales mix. For business planning and accounting decisions, use figures appropriate to your circumstances and seek professional advice where necessary.

Frequently Asked Questions