What is it?
Profit margin shows what share of revenue remains as profit.
Startup finance
Profit margin
Profit margin shows what share of revenue remains as profit.
Enter revenue and costs to get profit and margin %.
Profit margin
Inputs
Results
Profit / loss
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Profit margin %
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Guide
See margin as a percent
Why it matters
Comparing business models needs percentages, not only absolute profit.
How it works
Enter revenue and costs to get profit and margin %.
Formula Margin% = ((Revenue − Costs) ÷ Revenue) × 100
Go deeper
Why you’ll love this
Absolute profit is not enough — see what percent of revenue remains.
How to jump in
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Revenue and costs
Enter the period inputs.
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Read the margin
Profit and margin % with status.
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Pair with break-even
Also check price vs variable cost.
What you walk away with
- Margin formula
- Strong/thin/loss status
- Links to profit and ROI
- Free
Where it shines
Pricing
See if margin survives discounts.
Model comparison
Compare SaaS vs services in percent terms.
Cost control
Spot thin margins early.
Quick answers
What is a good margin?
It depends on industry — the tool gives the number and relative status.
No revenue?
Margin is undefined — revenue must be greater than zero.