When Should You Start That Dough? The Bake Planner Does the Fermentation Math for You
A free tool that works backward from your deadline, or forward from right now, so you’re not doing fermentation math on the back of a flour bag.
A while back I was planning a pizza night for a group big enough to need 24 dough balls. Not a professional job, just an ambitious weekend, and these days a fairly rare one for me. I haven’t worked regularly as a pizzaiolo in a while, so I’m a bit out of rhythm with the pace real volume demands. I sat down to work out when to start the dough so everything would be ready by eight, and it turned into more arithmetic than I expected: bulk rise, balling, a cold rest in the fridge, coming back to room temperature, then the actual baking, and that last part multiplied by however many pizzas my oven could hold at once.
I got there eventually, on paper, with a few crossings-out. The evening went well in the end — but if I’m honest, it wasn’t just the arithmetic that saved it. It was also falling back on old habits from my training: a feel for when dough is actually ready that no formula fully replaces, and enough experience to sense when a number on paper needed a second look. That’s the part that bothered me afterward. Someone without that background, facing the exact same 24-pizza evening, wouldn’t have that instinct to lean on when the numbers got complicated. That’s exactly who I built this for.
So I built the tool I was missing
The Bake Planner is a free tool (a bulk fermentation calculator, really, though it covers the full schedule rather than just that one stage) that does that timing math for you, for both bread and pizza. You can ask it two different questions, depending on what you actually know at the moment:
“I want to be done by a certain time: tell me when to start.” Or the other way around: “I’m starting right now: tell me when I’ll be done.” Either way, it walks the whole process forward or backward and hands you a clock time for every stage, not just a total duration.
Your kitchen isn’t a lab, so the tool doesn’t assume it is
Rise time is famously temperature-sensitive, and most timelines you find online quietly assume a kitchen that doesn’t exist — a fixed 21°C, every time. The Bake Planner asks for your actual room temperature and adjusts from there, using the rule of thumb that rise time roughly doubles for every 10°C you drop.
Tip: planning a long, cold rest in the fridge? Use chilled water when you mix, not straight from the tap. Room-temperature water can push your final dough temperature up before the fridge ever gets a chance to slow things down, and cooler dough at the mixing stage also helps gluten development. Worth checking, too: an older fridge often runs warmer than its dial claims, since cooling capacity fades with age. A cheap fridge thermometer beats a guess every time. A thermometer doesn’t lie.
The part that actually started this: batch size and oven capacity
That 24-pizza evening is exactly why the Bake Planner asks how many loaves or pizzas you’re making, and how many your oven fits per bake. I had two ovens going that night, one pizza at a time in each, so two pizzas per bake, not twenty-four. Twenty-four pizzas at that capacity is twelve sequential bakes, and that adds up to real time most timelines never account for. The same math applies to bread: twenty loaves with room for four at a time isn’t one bake either, it’s five. The tool does that multiplication for you and shows it plainly in the schedule, instead of leaving you to discover it the way I did, mid-evening, with a countertop full of dough.
And the flour question follows you here too
Long, slow rises (the kind that go 8 hours or more, often in the fridge) need flour strong enough to hold up over that stretch, the same theme I got into in Pizza Dough or Bread Dough?. So whenever you plan a rise that long, the Bake Planner asks about your flour: a W-value if you’re working with Italian flour, or just the protein percentage off any nutrition label if you’re not, since (as I got into in Flour Power) not every country prints a W-value on the bag. Either way, it tells you plainly whether what’s in your cupboard can actually carry the schedule you’ve just built.
One honest disclaimer
None of this makes the Bake Planner an exact science. It’s a good indication of when to start or when you’ll be done, not a guarantee — your kitchen, your flour, and your oven all have the final word. If you’re a newer baker with ambitious plans, build in some extra margin rather than cutting it close. Something will eventually go differently than planned; that part is going to happen to you regardless of how carefully you calculate. But everything you can plan for with room to spare should stay enjoyable, because that’s what makes baking worth doing in the first place, that, and the good bread and pizza everyone gets to eat afterward.
Run a baking blog or site of your own? The Bake Planner is also available as a free embed, so you can drop the whole tool straight into your own page for your readers to use, no coding needed on your end. Get in touch and I’ll send over the code.
It’s free, it’s on the site now, and it’s already saved me from doing that 24-pizza arithmetic by hand a second time.
— Rob