Business calculators
for real decisions.
Stop guessing. Free tools to calculate profit margins, markups, break-even points, and more. Built for small business owners who need answers, not spreadsheets.
Popular Calculators
Profit Margin Calculator
PopularCalculate gross, operating, and net profit margins. See how your margins compare to industry benchmarks.
Markup Calculator
EssentialConvert between markup and margin percentages. Find the right price to hit your profit targets.
Break-Even Calculator
EssentialFind out how many units you need to sell or revenue you need to cover your costs.
More Calculators
Cash Flow Forecaster
NewProject 12 months of cash flow with seasonal adjustments and shortfall alerts.
Business Loan Calculator
NewEstimate monthly payments, total interest, and compare loan options for your business.
ROI Calculator
NewAnalyze investment returns, compare options, and calculate payback periods.
Employee Cost Calculator
NewCalculate total cost of hiring including salary, taxes, benefits, and overhead.
Business Valuation Calculator
NewEstimate what your business is worth using revenue and earnings multiples.
Startup Cost Estimator
NewPlan your startup budget with categorized costs and funding gap analysis.
Business Finance Guides
In-depth articles to help you understand the numbers behind your business.
Understanding Profit Margins
Gross, operating, and net margins explained with industry benchmarks.
Read guide →Pricing Strategy for Small Business
Cost-plus, value-based, and competitive pricing methods compared.
Read guide →Break-Even Analysis Explained
How to calculate your break-even point with real-world examples.
Read guide →Cash Flow Basics
Why profitable businesses fail and how to forecast cash flow.
Read guide →Financial Ratios Guide
Key financial ratios every small business owner should track and understand.
Read guide →Tax Planning for Small Business
Essential tax strategies, deductions, and deadlines for small business owners.
Read guide →Built for Small Business Owners
Retail & E-commerce
Calculate markups, margins, and break-even points for your products.
Service Businesses
Price your services profitably with cost-plus and hourly rate calculators.
Freelancers
Set rates that cover your costs and leave room for profit.
Ready to crunch the numbers?
Start with our most popular calculator and see exactly where your margins stand.
Calculate Profit MarginFrequently Asked Questions
What is SmallBizCalc?
SmallBizCalc provides free financial calculators and guides designed for small business owners, covering startup costs, profit margins, pricing, and break-even analysis. All tools run in your browser — no signup required.
How accurate are the calculators?
Our calculators use standard financial formulas and current rates sourced from the IRS, BLS, and SBA. They provide solid planning estimates — consult a CPA or accountant for tax filing and complex financial decisions.
Do I need an account to use the tools?
No. All 10 calculators are completely free to use directly in your browser. No registration, no email, no credit card — ever.
Which calculator should I start with?
Start with the Profit Margin Calculator if you want to understand your current profitability. Use the Break-Even Calculator when launching a new product or pricing a service. The Startup Cost Estimator is best before you launch a new business.
Are the calculators suitable for freelancers and sole proprietors?
Yes. All calculators are designed for solo operators, freelancers, and small businesses with 1-50 employees. The Employee Cost Calculator, Cash Flow Forecaster, and ROI Calculator are particularly useful for freelancers evaluating whether to take on staff.