See your real profit before you spend more.
Nexa28 shows what your business actually keeps after every cost, fee, refund and ad — then lets you test a change before you commit to it.
Know your margins. Model the outcome.
No credit card. No unnecessary signup. Your calculations stay in your control.
Product Profit — demo model
LiveRevenue / month
$5,000.00
Variable cost / unit
$36.00
Profit / unit
$14.00
Margin
28.0%
Break-even units at $500 fixed costs
36 units
Illustrative example based on editable assumptions.
Everything you need to understand your numbers
Eight focused tools. One consistent way of thinking about money.
Product Profit
See what you really make on every sale.
“What do I really make per order?”
Open calculatorE-Commerce Profit
The full economics behind your store sales.
“Is my store actually profitable this month?”
Open calculatorAd Profitability
Know what you can afford to pay for a sale.
“Can I afford this ad cost?”
Open calculatorBreak-Even
The sales volume where you stop losing money.
“How many sales cover my costs?”
Open calculatorPricing
Price that covers costs, fees and your target margin.
“What should I charge for this?”
Open calculatorProfit Goal
The orders and traffic behind your profit target.
“How many orders do I need this month?”
Open calculatorFreelancer Rate
The rate your income, tax and hours actually require.
“What hourly or project rate do I need?”
Open calculatorAgency Profitability
Which clients create profit and how many you need.
“Which client is actually profitable?”
Open calculatorHow it works
Enter your assumptions
Costs, prices, volumes — only numbers you actually know.
Nexa28 calculates the economics
Deterministic formulas, shown in full, with no hidden defaults.
Change variables and test scenarios
What-if sliders show the delta against your baseline.
Compare outcomes and decide
Save models, compare them and commit with confidence.
Why Nexa28
Instant calculations
Every result updates the moment you change an assumption.
Transparent formulas
Each metric shows the formula and your own numbers inside it.
Scenario modelling
Test price, cost, churn and growth against a clear baseline.
Professional reports
Export a clean summary of assumptions and results.
Privacy-conscious
Calculations run in your browser and save only when you ask.
No AI required
Core maths is deterministic TypeScript, not a language model.
Take a closer look
Our privacy promise
Every calculation runs locally in your browser. Nexa28 does not require you to upload customer lists, private contact data or sensitive financial records to use its calculators.