Start here
Most business math questions come down to profit, pricing, and break-even. Start with margin, then use break-even to understand how many sales you need to cover costs.
Tip: If you’re pricing products or services, bookmark “Markup vs Margin” — mixing these up is one of the most common mistakes.
Profit Margin Calculator
Calculate margin from revenue and costs, plus a clear explanation.
Break-Even Calculator
Estimate how many sales you need to cover costs.
Markup vs Margin
A simple guide with examples and common mistakes.
Business tools (quick links)
Jump straight to the math you need — then explore related planning tools.