Format CNPJ
Format Brazilian CNPJ numbers by adding or removing the 00.000.000/0000-00 mask. Accepts a list with one CNPJ per line. Runs in your browser.
What is CNPJ formatting for?
The official CNPJ mask is 00.000.000/0000-00. Here you can apply or strip that mask, with support for the new alphanumeric format (IN RFB 2.119/2022), which keeps letters in the correct positions.
Paste a list with one CNPJ per line. Each line runs on its own.
Processing is fully local. No CNPJ ever leaves your browser.
Format CNPJ in bulk
Got a list of CNPJs with mixed formats, some masked and some just digits? Sorting that out by hand is tedious. Here you can apply or strip the 00.000.000/0000-00 mask across several CNPJs in one go.
Paste the list (one CNPJ per line) and say whether you want to add the formatting for a tidy display or remove it to keep only the digits. It comes in handy when you need to clean a base before importing, put together a report, or make records consistent between two systems.
Nothing goes through a server here: the processing happens in your browser and the CNPJs never leave your device. Paste the list and copy the standardised version.
Read more on this
Related Tools
Format CPF
Format Brazilian CPF numbers by adding or removing the 000.000.000-00 mask. Accepts a list with one CPF per line. Runs in your browser.
Six-Frame Translation and ORF Finder
Translate a DNA sequence in all six reading frames and list the ORFs, with the position on the strand, length in amino acids and the predicted protein.
Hz to Bark Scale Converter (Critical Band)
Convert a frequency in hertz to the Bark critical-band scale with the Zwicker formula: 13·arctan(0.00076f) + 3.5·arctan((f/7500)²), the basis of audio masking.
MPG to L/100km Converter
Convert fuel economy from miles per gallon (MPG) to liters per 100 km. Compare car efficiency between US and European standards.
Ordinal Number Converter
Convert cardinal numbers to ordinals — in Portuguese ("1º", "primeiro") and English ("1st", "first"). Everything in your browser.
PDF to Images
Convert PDF pages to individual PNG images. Everything in your browser via pdf.js.