Free finance calculators
Pick a goal. Type a few numbers. See your answer in about a minute.
Running a company? · 3 steps
The numbers behind your company
Runway calculator
How long will my cash last?
Months of cash left, and what one bad month does to that number.
Example: base runway16.6 monthsCheck my runwayLoaded CAC and payback calculator
What does one customer cost me?
The cost to win one customer, and the months to earn it back.
Example: loaded CAC payback4 monthsWork out the costCost of hiring an employee
What does a new hire really cost?
First-year cash cost: salary plus everything on top of it.
Example: year-1 cash cost$123,885Cost a new hire
Thinking about a rental property? · 2 steps
Run a rental's numbers
1%, 50% and 70% rules check
How does the rent compare to the price?
Rent and price next to the 1%, 50% and 70% rules of thumb.
Example: rent as a share of price0.83%Compare rent to priceCash-on-cash return calculator
What cash comes back each year?
Yearly cash left after costs and the loan, as a percent of the cash you put in. Before tax.
Example: cash-on-cash return0.9%Check the return
Sorting out your own money? · 2 steps
Your money next to rules of thumb
Money rules checkup
Where does my pay go?
Your spending and saving next to the 50/30/20 rule of thumb.
Example: share of pay saved15%Check my splitPersonal runway calculator
How long could I live on my savings?
The months your savings cover with no salary coming in.
Example: personal runway20 monthsCount my months
More calculators on the way: Marketing & growth, Loans & debt.
Every calculation runs in your browser and the formulas are shown on each page. Estimates for general information, not financial, tax or legal advice. Terms · Privacy