Beer Bottling Calculator

Professional beer bottling calculator for homebrewers. Compute priming sugar by type, required bottles, and target CO₂ volumes based on temperature and style presets. WCAG 2.1 AA accessible, mobile-first, and optimized for Core Web Vitals.

Batch & Carbonation

Target carbonation

Typical lager/ale targets sit between 1.8 and 3.0 volumes.

Sugar & Bottles

Used only when "Custom size" is selected.

When enabled, subtracts a % from the total batch volume before computing sugar.

How to Use This Calculator

This professional-grade beer bottling calculator helps homebrewers and small breweries determine the exact priming sugar to add, the number of bottles and caps required, and the per-bottle sugar dose.

Start by entering the finished batch volume and temperature, choose a carbonation target or preset, and confirm the fermentable and bottle size that match your process.

Methodology

The tool estimates residual dissolved CO₂ using a polynomial fit for temperature, subtracts it from your target volumes, and multiplies the delta by batch liters and the sugar yield constant.

Outputs are estimates. Use a scale for accuracy, add a safety margin when filling, and consult trusted brewing resources before scaling to commercial runs.

Full original guide (expanded)

The original beer bottling page included a complete audit, formulas, source list, and verification notes. The following guidance preserves that context while following the canonical CalcDomain layout.

  1. Set the batch volume (e.g., 19 L) and bottling temperature (21 °C / 70 °F) so the calculator can estimate residual CO₂.
  2. Pick a style preset or enter your own carbonation target in vols CO₂ (American Ale at 2.3 volumes is the default).
  3. Choose your fermentable — corn sugar is the baseline, but table sugar, DME, or honey are supported.
  4. Confirm bottle size through presets (12 oz / 355 mL) or enter a custom milliliter value.
  5. Click Calculate to see sugar mass, per-bottle dosing, bottle count, and CO₂ delta information.

FAQ Highlights

  • Which priming sugar should I use? Corn sugar (dextrose) offers a neutral flavor and predictable yield; sucrose needs a slightly lower weight, while DME adds malt character.
  • Why does bottling temperature matter? Cooler beer retains more fermentation CO₂; the calculator subtracts that residual gas to prevent over-carbonation.
  • Will honey or DME change flavor? Yes. Honey and DME can contribute subtle aromatics, so use dextrose or sucrose for the cleanest profile.
  • Is volumetric measuring (cups) reliable? No. Densities shift with sugar type and packing; weighing in grams ensures consistency.
  • How many bottles do I need? Enter the batch and bottle sizes, and the calculator reports the total bottles and caps required along with a packaging loss option.
  • Can I prime per bottle instead of batch priming? Yes. Use the per-bottle sugar output to dose individually, preferably with tiny funnels and a jeweler’s scale for best accuracy.

Audit status: Complete. Verification performed by Ugo Candido on 2026-01-19.

Formulas
Residual CO₂ (volumes) from temperature (°F): V_res(T_F) = 3.0378 - 0.050062·T_F + 0.00026555·T_F²
Required sugar mass (grams): m_sugar = (V_target - V_res) × V_beer,L × k_sugar
Per-bottle sugar (grams): m_per_bot = m_sugar / N_bottles, where N_bottles = ceil(1000 × V_beer,L / V_bottle,mL)

All sugar calculations assume the chosen fermentable yield constants listed in the inputs.

Citations
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
✓ Verified by Ugo Candido Last Updated: 2026-01-19 Version 0.1.0-draft
Version 1.5.0