Break-Even Calculator

Break-Even Calculator is a free browser-based tool that helps you find your break-even point with profit projection tables. It is part of ToolsMonk's business tools collection, so you can finish the job without downloading software, creating an account, or jumping between multiple websites.

This tool is especially useful for workflows such as working out how many units you must sell to cover costs, testing whether a price covers costs at realistic volumes, and assessing the viability of a product or business. Because it runs directly in your browser, you can use it on desktop, tablet, or mobile while keeping the process fast and easy for one-off tasks as well as repeat work.

Break-Even Calculator is designed for people who want a practical, privacy-friendly workflow with instant results inside the larger ToolsMonk library.

Break-Even Calculator finds the point at which sales exactly cover all costs — neither profit nor loss — from your fixed costs, variable cost per unit, and selling price, expressed in both units and revenue.

The maths centres on contribution margin: price minus variable cost per unit, which is what each sale contributes toward fixed costs. Break-even units are simply fixed costs divided by that margin, so a higher contribution margin (from a higher price or lower variable cost) directly lowers the number of units you must sell.

It's a sharp tool for pricing decisions. Cutting your price shrinks the contribution margin, which can sharply raise the volume needed to break even — revealing why a 'sell more by charging less' plan often backfires unless the extra volume genuinely appears. Modelling the shift before committing prevents a costly mistake.

Remember break-even shows the sales required to avoid a loss, not whether that volume is achievable — so always sanity-check it against realistic demand and your cash runway. Everything runs in your browser, keeping figures private. Pair it with the Profit Margin, ROI, and other ToolsMonk business calculators.