No. It is a synthetic 11-digit sequence computed only to satisfy the modulo-11 check digit. The tool never queries DENATRAN or any real registry.
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Generate and validate synthetic RENAVAM numbers with the modulo-11 check digit, tested against publicly known real numbers.
RENAVAM stands for Registro Nacional de Veículos Automotores, the national registry maintained by DENATRAN/SENATRAN that assigns a unique number to every vehicle licensed in Brazil. The number has 11 digits: the first 10 are the registration base, and the 11th is a check digit computed in modulo 11. The calculation multiplies each of the 10 base digits by the weights 3, 2, 9, 8, 7, 6, 5, 4, 3 and 2 (left to right), sums everything, takes the remainder of dividing that sum by 11, and the check digit is 11 minus that remainder, except when the result would be 10 or 11, in which case the digit becomes 0. This tool generates random 10-digit bases and computes the matching check digit, producing a synthetic RENAVAM that passes the same check used by real forms and systems, without ever querying DENATRAN's registry or confirming that the number matches a real vehicle.
RENAVAM's calculation is similar in spirit to a CPF's (modulo 11), but uses different weights and a different rounding rule. The 10 base digits are multiplied, left to right, by the weights 3, 2, 9, 8, 7, 6, 5, 4, 3 and 2. The 10 products are summed, the remainder of dividing that sum by 11 is taken, and the check digit is 11 minus that remainder. When that math would give 10 or 11 (that is, when the remainder is 1 or 0), the check digit becomes 0 instead of a two-digit number.
This algorithm is public and has been used by form-validation systems for decades; the goal, as with any check digit, is to catch typing errors: swapping a digit or transposing two neighboring numbers usually breaks the weighted sum and fails validation.
A RENAVAM that passes the check-digit calculation is only mathematically consistent, it does not confirm a licensed vehicle with that number exists, nor does it reveal outstanding fines, restrictions, theft records or licensing status. For that kind of information about a real RENAVAM, you need to query DENATRAN, the state DETRAN, or a vehicle-check service; this tool works entirely locally, without ever sending a number to a server.
Paste the code into your HTML and the tool shows up on your page, without J-Kit's navigation and ads. It still runs in the browser of whoever visits your site.
<iframe
src="https://jkit.tools/embed/en-US/renavam-generator"
width="100%"
height="600"
style="border:0"
loading="lazy"
title="RENAVAM Generator"
></iframe>These references help contextualize formulas, standards, APIs and limitations used on this page. They do not replace professional validation when a result has legal, financial, medical or operational impact.
No. It is a synthetic 11-digit sequence computed only to satisfy the modulo-11 check digit. The tool never queries DENATRAN or any real registry.
The RENAVAM is generated and validated locally in your browser. Analytics receives only the action and status, never the generated or pasted number.