Terms of Use

The calculators and educational content on Simple Tool Works are provided for general planning and estimation. Results depend on the inputs you provide and may not reflect every fee, tax, shipping charge, marketplace rule, or business expense. You are responsible for verifying important numbers before making financial or commercial decisions. The tools are not financial, legal, tax, accounting, or marketplace compliance advice. By using the site, you agree not to misuse the calculators, attempt to disrupt the service, or treat an estimate as a guaranteed result.