Dockzio mark (Maker's Seal — locked)Dockzio

Finance

Break-even Calculator

Find the sales volume needed to cover fixed and variable costs.

Everything runs in your browserNo account requiredPrivacy-firstv1.0.0Updated Aug 5, 2026

Everything is calculated in your browser. Nothing you enter is sent anywhere.

Tool

Cost and pricing

Everything is calculated in your browser.

Enter a volume to see projected profit or loss.

Why Dockzio?

Simple tools that respect your time and your privacy.

Free and instant

No subscriptions, no paywalls, no waiting.

No sign-up required

Open a tool and get to work immediately.

Private by design

Processing happens locally in your browser whenever possible.

Beautifully built

Clean, fast interfaces designed for everyday productivity.

About the break-even calculator

Find how many units you need to sell to cover fixed costs, and optionally project profit or loss at a given sales volume.

How it works

Contribution margin is price minus variable cost per unit. Break-even units equal fixed costs divided by that margin, rounded up to a whole unit.

Units sold

Optional. When set, profit equals units times contribution margin minus fixed costs.

Limitations

Assumes linear costs and a single product price. Multi-product mix, taxes, and step-fixed costs are out of scope.

Privacy first

All calculations run locally in your browser. Nothing you type is sent to a Dockzio server.

FAQ

Quick answers to common questions.

Contribution margin is price minus variable cost per unit. Break-even units equal fixed costs divided by that margin, rounded up.

Learning Center

Short explainers that pair well with this tool — concepts first, then practice.

Browse Learning Center →