Simple Free Tools

Editorial standards

How we keep free tools useful and honest

Simple Free Tools is for the jobs that should not require an account, a payment screen, or a watermark: calculate something, clean a file, check JSON, work with a PDF, convert a format, and get on with your day. The site is available in English, German, and Spanish.

Source basis

Each tool starts with the source that fits the job. A benefits or legal calculator needs official rules. A JSON formatter needs predictable parsing. A PDF or file tool needs standard format behavior and clear limits.

  • Rule-based calculators cite the formula, rule, or public source behind the result.
  • File, PDF, JSON, and converter tools explain important limits when the input can affect the output.
  • If a result is an estimate, we say so before users rely on it.

Review process

Before a tool goes live, we test it with real examples, edge cases, and the source material behind it. After launch, we revisit tools when rules change, standards move, or someone reports a problem.

  • Pages show a last-verified date when the underlying rule or source can change.
  • Examples and tests help catch formula, parsing, formatting, and conversion mistakes.
  • Source links and format notes stay visible where they help users check the result themselves.

Corrections

If a tool gives the wrong result, hides an important limitation, or explains something badly, fixing it comes first.

  • Reports can be sent to contact@simplefreetools.com.
  • Useful reports include the page URL, the input values or file type, and the result you expected.
  • Material fixes are reflected in the page copy, tool behavior, formula, or last-verified information.

When to double-check

Most tools here are straightforward. Some calculators touch money, work, tax, family, or legal rules. Those results can help you understand the likely answer, but they are not a final decision from an official body or a professional adviser.

  • Use official sources or qualified professionals for high-stakes decisions.
  • Pages that affect rights, obligations, or money include a clear disclaimer.
  • For files and conversions, check the output before deleting or replacing the original.

Last updated: May 2026 · Corrections contact@simplefreetools.com