Finance calculator

Break-Even Calculator

Find break-even units from fixed costs, price per unit, and variable cost per unit. See contribution margin and break-even revenue.

Instant result

Result

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Enter values to calculate.

Inputs—

Mode—

Formula—

Formulas

Core equations used by this calculator.

PrimaryUnits = fixed / (price − variable)

iRuns locally in your browser. Results are informational — verify critical financial decisions independently.

How to use

Follow these steps for a clear answer.

1

Enter the known values

Fill in each field with amounts and rates as labeled.

2

Calculate

Results update as you type; compare scenarios below when available.

3

Read the outputs

Check the result panel for the primary figure and supporting totals.

Example calculations

Common configurations with formula and result.

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Worked example

Fixed 50,000 · Price 40 · Variable 22 → 2,777.78 units

Units = fixed / (price − variable)

See result panel

Break-Even calculator specification

Version 1.0.0 · Last reviewed 2026-07-28

Definition: Break-even is the sales volume where total contribution equals fixed costs. Units = fixed / (price − variable cost).
What it calculates: Break-even units, contribution per unit, and revenue at break-even.
Inputs: Values shown on the calculator form
Outputs: Primary result in the result panel
Formula: Units = fixed / (price − variable)
About this calculator

Break-even is the sales volume where total contribution equals fixed costs. Units = fixed / (price − variable cost).

Formula

Units = fixed / (price − variable)

Example

Fixed 50,000 · Price 40 · Variable 22 → 2,777.78 units
Assumptions: Fixed rates and terms as entered; no fees or taxes unless modeled.
Calculation runs locally in the browser.
Units: Currency units as entered (dimensionless rates in %)
Boundary conditions: Zero or missing required fields yield zero or empty results.
Negative inputs are treated as zero.
Example: Fixed 50,000 · Price 40 · Variable 22 → 2,777.78 units
Validation cases: 50000 / (40−22) → 2777.78 units
price = variable → 0 units (no contribution)
10000 / (20−10) → 1000 units
Sources: Standard time-value-of-money / managerial accounting identities
Last reviewed: 2026-07-28
Calculation version: 1.0.0

Frequently asked questions

Key distinctions behind the calculation.

How does the Break-Even Calculator work?

It uses Units = fixed / (price − variable). All math runs locally in your browser.

Can I share my inputs?

Yes. Use Copy link in the result panel — the URL stores your current inputs.