Business Calculators
Margins, break-even points, salary conversions, discounts, and payroll math without the spreadsheet warm-up.
Break-Even
Calculate the break-even point in units and revenue.
Profit Margin
Calculate profit margin, gross margin, and markup percentage.
Hourly to Salary
Convert hourly wage to annual salary and vice versa.
Salary & Tax
Calculate your take-home pay after federal and state taxes.
Percentage
Calculate percentages, increases, decreases, and ratios.
Tip Calculator
Quickly calculate tips and split bills between friends.
Discount Calculator
Calculate sale price after discounts with stacked discount and tax support.
Paycheck Calculator
Calculate your take-home pay after taxes, FICA, 401(k), and deductions.
Business math is mostly about not fooling yourself
A product can look profitable until you add the fixed costs. A discount can look harmless until you calculate the margin. A salary can sound fine until the hours turn it into a bad hourly rate.
These calculators are for those first checks: how many units you need to sell, what markup turns into as a margin, what an hourly contractor rate looks like as an annual salary, and what comes out of a paycheck before it reaches the bank.
They do not replace an accountant. They make the accountant conversation better because you already know which numbers are doing the damage.
Common questions
- What is the difference between markup and profit margin?
- Markup is added to cost. Margin is the share of revenue left as profit. A 50% markup does not create a 50% margin. It creates a 33.3% margin.
- What is break-even analysis and why is it important?
- Break-even is the point where revenue equals total cost. You are not profitable yet, but you are no longer losing money. It tells you the sales volume you need before a project starts paying for itself.
- How do I convert an hourly rate to annual salary?
- Multiply the hourly rate by annual hours. The common full-time shortcut is 2,080 hours per year, or 40 hours times 52 weeks. Overtime, unpaid time off, and seasonal schedules change the result.
- What payroll deductions should I expect?
- The usual list includes federal income tax, Social Security, Medicare, state income tax, retirement contributions, and health insurance. The paycheck calculator estimates how much is left after those deductions.