Free calculator library

Tools for independent work

Ten focused calculators for rates, pricing, income, cash flow, and the costs behind your business.

Business

Business tools

4 tools

Compare contract revenue with the full value of salary and employer-provided benefits.

Draft a clean invoice total with tax, discount, and payment terms.

Estimate realistic annual billable capacity after leave, admin, and sales work.

Estimate a transparent late fee based on the overdue amount, rate, and delay.