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Both calculators run independently — change the inputs on either side to compare results.

Payback Period Calculator

Calculate how many years it takes to recover the initial cost of an investment from its annual cash flow — the simplest break-even measure for capital projects. Use it as a quick filter for business investments like equipment purchases, solar installations, or marketing campaigns before running deeper NPV or IRR analysis.

Initial Investment ($)

Annual Cash Flow ($)

Fill in the required fields to see your result.

Accounting

Break-Even Point Calculator

Calculate the number of units you must sell at a given price to cover all of your costs — the moment a business starts generating profit instead of losing money on each transaction. Enter your total fixed costs (rent, salaries, software, insurance), your variable cost per unit (raw materials, packaging, payment processing), and your selling price per unit, and the calculator returns the break-even quantity. This is one of the most important numbers in starting or pricing any product: it tells you whether the business model is even viable, how much volume you need, and how sensitive profitability is to price and cost changes.

Fixed Costs ($)

Variable Cost per Unit ($)

Selling Price per Unit ($)

Fill in the required fields to see your result.

Key differences

	Payback Period Calculator	Break-Even Point Calculator
Category	Accounting	Accounting
Inputs required	2	3
Result	Payback Period (years)	Break-Even Point (units)
What it does	Calculate how many years it takes to recover the initial cost of an investment from its annual cash flow — the simplest break-even measure for capital projects. Use it as a quick filter for business investments like equipment purchases, solar installations, or marketing campaigns before running deeper NPV or IRR analysis.	Calculate the number of units you must sell at a given price to cover all of your costs — the moment a business starts generating profit instead of losing money on each transaction. Enter your total fixed costs (rent, salaries, software, insurance), your variable cost per unit (raw materials, packaging, payment processing), and your selling price per unit, and the calculator returns the break-even quantity. This is one of the most important numbers in starting or pricing any product: it tells you whether the business model is even viable, how much volume you need, and how sensitive profitability is to price and cost changes.