Free cash-flow calculator

Cash Runway Calculator

Estimate how many months your available cash will last and see when action may be needed.

Simple calculator

Estimate your current runway

Updates live

Available business cash

Cash that can actually be used to operate the business.

Average monthly cash inflow

Customer payments and other recurring cash received. Average monthly cash outflow

Payroll, vendors, rent, debt, taxes and other cash paid.

Minimum cash reserve

Optional cash floor you do not want operations to cross.

Advanced calculator

Build a month-by-month runway forecast

Updates live

Starting position

Opening cash

Minimum cash reserve

Forecast begins Projection length

Monthly cash inflow

Recurring customer cash

Other monthly cash inflow

Monthly inflow growth

Use a negative number for declining inflow.

Monthly cash outflow

Payroll and contractors

Rent and facilities

Software and administration

Marketing and sales

Debt payments

Taxes and insurance

Other fixed outflow

Variable outflow

% of inflow

Monthly expense growth

Applied to fixed monthly outflow.

One-time cash events

Positive amounts add cash. Negative amounts use cash.

MonthAmount

Detailed forecast

Month-by-month cash schedule

Positive one-time events add cash; negative events reduce cash.

Month	Opening cash	Cash inflow	Cash outflow	One-time event	Net change	Ending cash

Cash runway

The amount of time available cash can support the business before reaching a chosen cash floor or zero.

Net burn

Monthly cash outflow minus monthly cash inflow. A negative burn means cash is increasing rather than shrinking.

Use real cash timing

Runway is a cash-flow measure. Enter when money is actually received or paid, not only when revenue or expenses are recorded.