The Startup Cost Calculator shows how much money you need before opening a business. Enter your one-time costs, like registration and equipment, and your monthly costs, like rent and insurance. The calculator adds a cash cushion and a buffer for surprises, then shows your total. Results update as you type.

The Business Idea Profit Calculator shows whether a business idea can make money before you invest in it. Enter your price, cost per sale, expected monthly sales, and fixed costs to see your monthly profit, break-even point, and how many months it takes to earn back your startup cost. Results update as you type.

The Entrepreneur Salary Calculator shows how much you can pay yourself from your business. Enter your yearly revenue and expenses, choose how much to keep in the business and set aside for taxes, and see your take-home pay per year, per month, and per hour. Results update as you type.

Starting a business with a partner, or bringing in an investor? This business ownership calculator shows how to split ownership fairly based on the cash, work, and assets each owner puts in. You can also see how much of the business you'll keep after an investment, and what your stake will be worth.

Is your business actually a good investment? This entrepreneur ROI calculator shows the real return on the money you've put in, including what your business is worth today and the value of your own time. You can also compare it with investing elsewhere, or check whether a new purchase like equipment or marketing will pay for itself.