ArgoBox
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Development • Food & Drink Utility

Coffee Lab

A cold brew calculator now, an expandable brewing workbench later.

This first release is built around your batch-style cold brew math: coffee in, water in, concentrate out, caffeine estimates, dilution targets, and cube conversions. The structure is ready for pour over, moka pot, espresso, and French press modes next.

Open calculator See planned brew modes
1 Live brew mode
4 Planned additions
8+ Core batch outputs

What this is

Coffee Lab is intentionally framed as a standalone utility incubated inside ArgoBox's Development surface, not as a core ArgoBox module. The math lives in a reusable TypeScript library so the calculator can later be split into its own site or package without rewriting the logic.

Current default profile: Cold Brew using your last heavy batch as the starting preset.

Inputs

Adjust the batch, then watch the caffeine and yield model update instantly.

Assumptions

  • Assumes concentrate density near water for grams ↔ fluid ounces.
  • Use bean caffeine % and extraction % as adjustable estimates, not lab measurements.
  • Observed retention from your batch is a strong predictor for the next water-in target.

Concentrate snapshot

Your current batch in one glance.

Concentrate yield —
Total caffeine —
mg / fluid oz —
mg / gram —
Coffee eq / oz —
Retention ratio —

Dilution + target helpers

Translate the concentrate into finished drinks and next-batch planning.

Ready-to-drink batch —
Ready-to-drink mg / oz —
Water retained —
Target concentrate yield —
Add / remove water —
Next batch water-in —

Cube math

Useful for freezing concentrate into measured servings.

Cube volume —
Cube caffeine —
Cubes per fluid oz —
Cubes per 3 oz pour —
3 oz caffeine —
3 oz coffee equivalent —

Serving table

What common concentrate pours look like with the current dilution setting.

Concentrate Finished drink Caffeine Coffee equivalent

Pour Over

Planned

Future mode for brew ratio, drawdown, and ready-to-drink cup strength.

  • Planned: ratio-first flow with no concentrate assumption.

French Press

Planned

Future mode for immersion brew yield and sediment-aware cup estimates.

  • Planned: immersion mode with cup-strength outputs.

Moka Pot

Planned

Future mode for basket fill, brew yield, and dilution to mug strength.

  • Planned: moka-specific yield and dilution helper.

Espresso

Planned

Future mode for dose, yield, shot ratio, and estimated caffeine per shot.

  • Planned: shot ratio and milk drink translations.