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Jack Green
Jack Green

Posted on • Originally published at tools.jackgreen.top

I Built a Free Home Brewing Recipe & Batch Calculator (Because Brewer's Friend Charges $6.95/Month)

I Built a Free Home Brewing Recipe & Batch Calculator (Because Brewer's Friend Charges $6.95/Month)

Stop paying $6.95/month for recipe calculations when you can do it right in your browser.

I was tired of brewing calculators that gate basic batch math behind subscriptions. Every time I wanted to scale a recipe or calculate IBUs, I had to log in, enter my details, and hope the site didn't sell my data. For a tool that should take 30 seconds, that's ridiculous.

So I built something better.

Home Brewing Recipe & Batch Calculator runs 100% in your browser.

What you get:

  • Batch size calculator (gallons or liters)
  • Beer style presets: IPA, Stout, Lager, Wheat, Sour, Porter, Pilsner, and more
  • Malt & grain weight calculator with base and specialty grains
  • Hops calculator with alpha acid % and IBU estimation (Rager formula)
  • Yeast packet calculator based on batch size and style
  • ABV/SG estimation from gravity readings
  • Export recipes as JSON or copy to clipboard
  • Works offline after first load
  • No signup required
  • Your data never leaves your browser

The free tool lets you brew virtual beers right now. No watermarks, no paywalls, no tricks.

vs Brewer's Friend: Brewer's Friend charges $6.95+/month for batch calculations. This is free.

Try the free demo

Built for homebrewers who want simple, private recipe math — no subscription required.

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