What is the RUT verifier digit?

The verifier (dígito verificador, DV) is the last character of a RUT. It is computed from the body digits with the modulo-11 algorithm and can be 0–9 or the letter K.

How is the Chilean RUT verifier calculated?

Take the body digits right to left, multiply by the cycling weights 2,3,4,5,6,7, sum the products, then compute 11 minus (sum modulo 11). A result of 11 becomes 0, 10 becomes K, otherwise the digit itself.

Is my RUT sent anywhere?

No. The validator runs entirely in your browser with client-side JavaScript — your RUT is never uploaded or stored.

Chile RUT Validator — Gera Tools

Chilean RUT validator

Validate a Chilean RUT or RUN by checking its verifier digit (dígito verificador). The verifier is derived from the body digits with the modulo-11 algorithm — this tool confirms whether the one you entered is correct, and if not, shows the correct verifier and a properly formatted RUT.

Everything runs in your browser, so the RUT you enter is never uploaded. This is a check-digit validator only — it does not confirm the RUT against the Servicio de Impuestos Internos or the Registro Civil.