Skip to content
CrumbCalc

Baking math, explained

Guides to the numbers behind baking — written around the calculators themselves. Every figure is either computed by the same tested code that powers the tools or quoted from a named, linked source, and the relevant calculator is embedded right where you need it. Rules of thumb are labelled as rules of thumb.

August 14, 2026

How to Convert a Cake Recipe to a Different Pan Size

Adapt any cake recipe to the pan you own: scaling by volume, adjusting bake time and temperature, and the pan swaps that don't work.

Read the guide →

August 14, 2026

How to Double a Recipe — What Scales and What Doesn't

Doubling ingredients is the easy part. Pans, bake times, leavening, spices and eggs each follow different rules — here's each one, with the math done for you.

Read the guide →

August 14, 2026

Grams vs Cups: Why Serious Bakers Measure by Weight

The same cup of flour can weigh 120 g or up to 160 g depending on how it's scooped — enough to change a cake. How to switch to weighing.

Read the guide →

August 14, 2026

How Many Pies for Thanksgiving? Pie Calculator by Guest Count

How many pies for Thanksgiving: one 9-inch pie per 8 guests (Pillsbury's printed yield), or per 6 for big slices. Calculator and chart for 4–30 guests.

Read the guide →

August 15, 2026

Baking at High Altitude: What Changes, and What to Do About It

Why thin air breaks sea-level recipes, what the published adjustment tables say, and how bread, cookies, candy and frying each change above 3,000 feet.

Read the guide →

August 15, 2026

How Much Buttercream Do You Need? The Math, Worked Out

Why frosting charts disagree, the three surfaces that set the amount, and how to turn cups-needed into batches of your own recipe — calculator included.

Read the guide →

August 14, 2026

Christmas Cookie Math: Batch Scaling, Cookie Exchanges & Make-Ahead

Batches for the cookie exchange and the gift list, tripling a dough in one bowl, and the freezer schedule that moves December's baking into November.

Read the guide →