Skip to Content
The Sourdough Society Home / Baker's Toolkit
Baker's Toolkit

Tools for better bread, every bake

Precision takes the guesswork out of sourdough. These are the same calculations we use in our own studio — free to use, any time.

Tool 1 of 4

Dough Temperature Calculator

Desired dough temperature (DDT) drives everything downstream — get your water temperature right and your fermentation timing gets predictable.

Temperatures

Friction factor: 13°C

Results

Water temperature—
—
 
 
—
Bulk fermentation estimate
Fermentation ranges based on The Sourdough Journey's timetables and the Bulk-O-Matic guide.
Tool 2 of 4

Baker's Percentage Recipe Scaler

Loads our studio formulas by flour ratio. Hydration, salt and starter default to common starting points — adjust them to match the formula you're actually running.

Formula

Baker's %
Grams

Scaled formula

Total flour— g
Total dough weight— g
Total formula %—%
—
Weight per loaf, if divided evenly
Flour-component percentages are locked to the studio's documented ratios. Everything else is open to edit.
Tool 3 of 4

Bake Schedule Planner

Work backwards from when you want the loaf out of the oven. Use the bulk fermentation estimate from the Dough Temperature Calculator above as your input here.

Work backwards from

Copy this from the Dough Temperature Calculator's result above.

Your schedule

    Cold retard is assumed to go straight from fridge to oven — no extra proofing time added after the overnight rest.
    Tool 4 of 4

    Starter Feeding Calculator

    Work out exact feed weights from how much starter you're keeping and your feeding ratio.

    Your starter

    1:1:1 for daily counter feeding. 1:5:5 or leaner stretches feeds out for a slower rise.

    This feed

    Starter (keep)— g
    Flour to add— g
    Water to add— g
    —
    Total fed starter weight
    —
    Suggested next feed
    The Sourdough Society · Discovery Bay

    Want This as a Printable Cheat Sheet?

    All four calculators plus our studio formulas, condensed to one printable page for your kitchen. Enter your email and we'll send it right over.

    Submit

    Your Cheat Sheet Is Ready!

    Check the button below to download your printable Baker's Toolkit cheat sheet.

    You can also revisit the calculators anytime on this page.

    Download Your Cheat Sheet (PDF)

    Baking From Outside Discovery Bay?

    We're building digital classes and downloadable guides for bakers outside Discovery Bay. Pop your email on the list and we'll let you know the moment they're ready.

    Submit

    You're on the List!

    We'll email you the moment our digital classes and downloadable guides are ready.

    In the meantime, feel free to explore the calculators above anytime.