Business math, without the fog

Make the next number
make sense.

Clear inputs, visible assumptions, and useful decisions for small-business owners.

Choose a question

Useful calculators, one clear home.

Calculate gross profit, margin, markup, and a target price from revenue and direct cost.

Turn a cost and markup percentage into a selling price, profit dollars, and resulting margin.

Find units and revenue needed to cover fixed costs from price and variable cost.

Set a price from cost, fixed-cost allocation, target margin, and payment fees shown separately.

Create a simple browser-only invoice total with line discount and tax, ready to print locally.

Calculate gain, return on investment, and a simple annualized rate from returned value, investment, and months.

Track opening cash, period changes, net movement, and closing balance in a clear table.