The simple font utility
Instructions below
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How do I convert woff font to otf?

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Below are the steps for converting woff font files to otf.
  1. Under "Select woff font file", click on browse (or your browser equivalent). Select the woff font file you wish to convert.
    Select font file to convert
  2. Click "Convert to woff". It will initiate the conversion and redirect you to the download page once completed.
    Select font file to convert
  3. Click "Download Converted Font" to save the font file to your local drive.
    Download converted font file
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What is fontConverter.io?

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The fontConverter is a free online woff to otf file converter. In addition, it supports various other conversions with the following formats: CFF, OTF, WOFF (1 & 2), TTF and EOT.