Free startup calculators
Work out how long your cash lasts, how many sales you need to break even, what a funding round does to your ownership, and what a loan will cost. Results update as you type, and nothing leaves your browser.
Cash runway and burn rate
How many months you can operate before the cash runs out at your current spending.
How it's calculated. Net burn is monthly expenses minus monthly revenue. Runway is cash divided by net burn. It assumes revenue and expenses stay flat, so treat it as a planning estimate and recheck it each month.
Break-even calculator
How many units you need to sell each month to cover your costs, or to reach a profit target.
How it's calculated. Profit per unit (contribution margin) is price minus variable cost. Units needed is (fixed costs + target profit) divided by profit per unit, rounded up to a whole unit.
Equity dilution calculator
See how much of the company you keep after raising a round at a given valuation.
How it's calculated. Post-money valuation is pre-money plus the investment. New investors own investment divided by post-money. Everyone who held shares before is diluted by the same proportion, so your new stake is your old stake times (pre-money divided by post-money). This version ignores option pool top-ups and convertible notes, which dilute you further.
Loan EMI calculator
The monthly instalment, total interest, and total cost of a business loan.
How it's calculated. With monthly rate r (annual rate divided by 12) and n monthly payments, EMI = P × r × (1+r)n ÷ ((1+r)n − 1). At a 0% rate it is simply P ÷ n. Real lenders may add processing fees and round differently, so check the offer letter.