Free tools for online businesses

Clearer numbers.
Better decisions.

Simple calculators for the everyday decisions behind your business.

Understand the numbers behind your next decision

Work through business calculations with clear inputs, explained results, and useful examples.

Calculate profit, margin, and markup from revenue and included costs.

Find a selling price that meets your target margin, rounded upward to the nearest cent.

Find the revenue per advertising dollar needed to cover contribution costs and ad spend.

Estimate US Etsy order fees and contribution profit after included costs.

See the formula and assumptions behind each result. Explore practical guides to understand how the numbers fit together.

No account needed. Calculations run in your browser.