Business calculators
Running a business means knowing your numbers. These tools cover pricing and margins, break-even and ROI, customer economics, cash flow, and the marketplace and payment fees that quietly eat into profit.
Amazon Seller Profit Calculator
Profit per unit after Amazon's fees.
CalculateBreak-Even Calculator
Find the units that cover costs.
CalculateBusiness Loan Calculator
Payments and cost of a business loan.
CalculateCash Flow Calculator
See money in versus money out.
CalculateCustomer Acquisition Cost Calculator
Know what a customer costs you.
CalculateCustomer Lifetime Value Calculator
Estimate a customer's total worth.
CalculateDiscount Calculator
See the sale price and savings.
CalculateE-commerce Profit Calculator
Profit per order after every fee.
CalculateEtsy Fee Calculator
See Etsy's cut and what you keep.
CalculateFreelance Project Rate Calculator
Quote a project with confidence.
CalculateInventory Turnover Calculator
How fast inventory sells through.
CalculateMarkup Calculator
Set a price from cost and markup.
CalculatePayPal Fee Calculator
The fee on a payment — and net.
CalculateProfit Margin Calculator
Turn revenue and cost into margin.
CalculateROI Calculator
Measure return on any investment.
CalculateSaaS Revenue Calculator
Project MRR and ARR growth.
CalculateSales Tax Calculator
Add or remove sales tax fast.
CalculateSubscription Pricing Calculator
Price a plan to hit your margin.
CalculateExplore other categories
Frequently asked questions
Are NumberPilot's calculators free to use?
Yes. Every calculator on NumberPilot is completely free, with no signup, account, or subscription required. There are no usage limits.
Do you store the numbers I enter?
No. All calculations run entirely in your browser. The values you type are never sent to our servers. Optionally, we save only the names of calculators you've used in your browser's local storage so we can show a 'recently used' list — you can clear this anytime.
How accurate are the results?
Our calculators use standard, well-established financial formulas and are unit-tested for accuracy across a wide range of inputs. That said, results are estimates for educational purposes and don't account for every real-world variable, so they shouldn't be treated as financial, tax, or legal advice.
Can I use NumberPilot on my phone?
Absolutely. NumberPilot is built mobile-first and works smoothly on phones, tablets, and desktops, with fast load times and responsive layouts.
Will you add more calculators?
Yes. NumberPilot is built on a scalable architecture designed to grow into hundreds of calculators across loans, mortgages, investing, retirement, salary, credit, and everyday math.