Business calculators
Margin, markup, break-even, discount, budget, net worth, rent helpers, and PayPal fee sketches.
10 tools
In this group
Open margin, markup, or break-even. Household and ops math includes budget, net worth, net effective rent, prorated rent, and PayPal fee.
- Break-Even Calculator Units to break even: fixed costs divided by contribution margin per unit.
- Budget Calculator Enter income and category amounts. The page totals allocations, remaining cash, and each category as a percent of income. Informational budgeting arithmetic, not financial advice.
- Straight-Line Depreciation Straight-line depreciation from cost, salvage, and useful life. Not tax-code MACRS.
- Discount Calculator Sale price after a percent off. Informational, not a store coupon.
- Profit Margin Calculator Gross margin, markup, and profit from cost and selling price.
- Markup Calculator Selling price from cost and markup percent.
- Net Effective Rent Calculator Spread free rent or other concessions across the lease term to find net effective monthly rent. Informational landlord math, not legal or financial advice.
- Net Worth Calculator Subtract total liabilities from total assets for a simple net worth snapshot. Informational only, not financial advice and not a balance sheet audit.
- PayPal Fee Calculator Estimate PayPal-style fees as percent plus fixed, either from a payment you receive or from a net you want to keep. You type the fee schedule. Live rates vary. Informational only.
- Prorated Rent Calculator Charge or credit a partial month by multiplying monthly rent by days occupied over days in the month. Informational only, not a lease interpretation.