How to use it
- Enter fixed costs using the same period and unit as the other inputs.
- Enter selling price per unit using the same period and unit as the other inputs.
- Enter variable cost per unit using the same period and unit as the other inputs.
Business · Local-first · Beta
Break-even Calculator
Find the units and revenue needed to cover fixed costs for one product or service.
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Trust record
Check the method before you rely on the result
- Method
- Fixed costs divided by contribution per unit, with whole-unit rounding shown explicitly.
- Break-even units = fixed costs ÷ (selling price per unit − variable cost per unit)
- Effective period
- Formula-based; no statutory effective period
- Last verified
- 9 August 2026
- Review every 365 days
- Reviewer status
- Product and domain review: specialist approval not required
- Privacy
- Scenario inputs and results stay in this browser. Values are not sent to analytics, a backend, a URL or a log. They are not saved by default; an explicit related-tool transfer is kept only in this tab until it closes or you replace it.
Important limitations
- V1 models one product or service.
- It assumes price, variable cost and fixed cost remain stable.
Browse Business · Methodology · Sources
A quick guide
Use the number with context
The answer is only useful when you know what it includes and what it leaves out.
Formula
Break-even units = fixed costs ÷ (selling price per unit − variable cost per unit)
The whole-unit result is the minimum complete units needed to cover the selected fixed costs.
Make it concrete
Worked example
₹1,00,000 fixed costs and ₹400 contribution per unit require 250 units to break even.
Boundaries
What this tool does not assume
Limitations
- V1 models one product or service.
- It assumes price, variable cost and fixed cost remain stable.
Edge cases
- Selling price must exceed variable cost.
- The exact fractional result is shown alongside the whole-unit result.
Last reviewed 9 August 2026 · Formula version 1.0
Method & sources
How this result is grounded
The formula is deterministic and runs in your browser. Read the reference below for the method used by this tool.
- Business economics methodology v1
KarobarKit controlled methodology · authoritative reference · Checked 9 August 2026
Supports: business economics formulas · rounding and scope limitations · estimate-only language
Questions
Frequently asked
Why do I see whole and exact units?
The exact division is useful for analysis; a business usually needs a whole unit to reach or exceed break-even.
Does this model a product mix?
No. This first version is a single-product scenario.
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Source register checked 9 August 2026.