About Toolinho

Last updated: 24 August 2026

Toolinho is a free collection of 65+ browser-based tools — calculators, converters, generators and text utilities. There is no signup, no account and no paywall.

How these tools work

Almost every tool on this site runs entirely in your browser. Text you paste into the word counter, the JSON formatter or the case converter is processed on your own device and is never uploaded to a server.

Three tools are the exception, because they cannot work without a network lookup:

• What Is My IP and WHOIS Lookup query a third-party lookup service.
• Image Resizer performs its resizing in your browser.

Accuracy

The health-related calculators (BMI, calorie, alcohol, pregnancy) are general-purpose screening tools. They are not medical advice, not a diagnosis, and should not replace consultation with a qualified healthcare professional.

Who runs Toolinho

Toolinho is built and operated by Tolunay, an independent developer. It is a personal project: no company, no investors, and no data business behind it.

Corrections

If a calculation looks wrong or a tool misbehaves, it is worth reporting — corrections are applied quickly. A contact address will be published here shortly.