Cooking constantly tests and stretches our math abilities. 3/8 teaspoons times 7? And wait - how many tablespoons is that now? Quick! The batter is waiting! Thank goodness for conversion charts and Google Calculator.
There's one more online tool we find indispensable - especially when doubling, halving, or multiplying a recipe (wedding cake, say) to feed a crowd.
This resource is low-key and easy to use, but it will make your life so much easier when cooking for a crowd. It's called the Recipe Quantity Calculator, and it takes in the recipe you want to multiply and does all the challenging math work for you.
We like how flexible it is; you can use your own units or the pre-programmed ones. You can also multiply recipes by any factor you like, which means you can halve, or divide by eight, or multiply by 29. Whatever - this takes some of the head scratching out. Because, even if you're very competent at math, recipes can be a little overwhelming sometimes with all their quantities and units. We've found this a very helpful tool when working on big meals or projects.
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I've had that calculator in my favorites for a couple years, it's a real lifesaver! When I use it I don't have to worry that I'll leave something out, or use too much. I just copy and paste the recipe, convert it, and print out the new one. Great tool!
Oh, I am forever trying to scale things down because 90% of the time I'm cooking for myself and everything "serves 6" or "serves 8".
If it tells you what size pan to use if you're making a tart for one, then I want to marry this calculator. You heard it here first.
This kitchen calculator is also fabulous http://www.chefdepot.net/kitchencalculator.htm I've had one for years and love it. You can type in 64 TBSP hit covert to cups and it will tell you exactly how many to add.