EBC Color Calculator - Predict Beer Color from Malt Bill

Enter your grain bill and see the color of your beer before you brew it

Beer color comes from malt. Every grain in your recipe contributes color units proportional to its weight and its EBC rating. The Morey formula converts those combined color units (MCU) into SRM and EBC values - giving you a reliable prediction of how pale, amber or dark your finished beer will look in the glass. This calculator handles up to 6 malts, shows a real-time color swatch and classifies the result by beer style.

How to calculate beer color - step by step

Post-boil volume - enter the amount of wort after the boil, in liters. Typical home batch: 20-25 L.
Number of malts - select how many distinct malt types are in your grain bill (1-6).
Malt weight (kg) - enter the weight of each malt. Base malt is usually 70-90% of the total.
Malt color (EBC) - find the EBC value on the malt data sheet or packaging.
Read the result - the calculator shows EBC, SRM, MCU, a color swatch and style classification.

Common malt color values

Reference table for popular malt types. Exact EBC values vary by maltster - always check the specification sheet.

Malt type	EBC range	SRM range	Typical use
Pilsner malt	3-4 EBC	1.5-2	Base malt for lagers and pale ales
Pale Ale malt	5-7 EBC	2.5-3.5	Base malt for British and American ales
Munich malt	15-25 EBC	7.5-12.5	Adds golden to amber color and malty depth
Caramel / Crystal malt	20-300 EBC	10-150	Adds color, sweetness and body - wide range
Chocolate malt	800-1000 EBC	400-500	Dark color with chocolate and coffee notes
Roasted barley	1000-1400 EBC	500-700	Intense dark color for stouts and porters

Practical examples

Example 1: Czech Pilsner - 23 L, 1 malt: 4.5 kg Pilsner (4 EBC)
Result: 7.0 EBC (3.5 SRM) - very pale straw color, classic Pilsner appearance

Example 2: American Pale Ale - 23 L, 2 malts: 4.0 kg Pale Ale (6 EBC) + 0.3 kg Caramel 60 (60 EBC)
Result: 15.8 EBC (8.0 SRM) - golden amber, typical pale ale appearance

Example 3: Oktoberfest / Marzen - 23 L, 3 malts: 3.5 kg Pilsner (4 EBC) + 1.5 kg Munich (20 EBC) + 0.3 kg Caramel 120 (120 EBC)
Result: 26.4 EBC (13.4 SRM) - deep gold to amber, traditional Marzen look

Example 4: English Brown Ale - 23 L, 3 malts: 4.0 kg Pale Ale (6 EBC) + 0.5 kg Crystal 80 (80 EBC) + 0.15 kg Chocolate (900 EBC)
Result: 47.2 EBC (24.0 SRM) - rich brown, ruby highlights when held to light

Example 5: Dry Irish Stout - 23 L, 3 malts: 3.5 kg Pale Ale (6 EBC) + 0.5 kg Flaked barley (3 EBC) + 0.4 kg Roasted barley (1200 EBC)
Result: 98.5 EBC (50.0 SRM) - opaque black, exactly what a stout should look like

Example 6: Belgian Dubbel - 23 L, 4 malts: 4.0 kg Pilsner (4 EBC) + 0.5 kg Munich (20 EBC) + 0.3 kg Special B (300 EBC) + 0.2 kg Caramel 120 (120 EBC)
Result: 39.6 EBC (20.1 SRM) - deep copper to brown, classic Belgian abbey color

FAQ - Frequently asked questions

What is the difference between EBC and SRM?

Both scales measure beer color. SRM (Standard Reference Method) is the American standard. EBC (European Brewery Convention) is the European standard. The conversion is simple: EBC = SRM x 1.97. A 5 SRM beer equals roughly 10 EBC. European recipes and malt specifications almost always use EBC.

What is MCU and how does Morey formula improve on it?

MCU (Malt Color Units) is a simple linear calculation: sum of (weight x color) / volume for each malt. It works well for pale beers but overestimates color for dark beers. The Morey formula (SRM = 1.4922 x MCU^0.6859) applies a power curve that better models how color compounds actually behave, giving accurate results up to about 50 SRM (100 EBC).

How accurate is this color prediction?

The Morey formula is accurate within 1-2 SRM for beers under 50 SRM. Factors that can shift real-world color include mashing temperature, boil duration (longer boils darken wort), yeast strain, water chemistry and oxidation. Treat the result as a close estimate rather than an exact measurement.

What is Lovibond and how does it relate to EBC?

Lovibond (degrees Lovibond) is an older color measurement system still used by some American maltsters. The conversion is Lovibond = (EBC + 0.46) / 1.97. In practice, Lovibond is nearly identical to SRM for values above 8. This calculator converts EBC to Lovibond internally for the MCU calculation.

Can I use this for extract brewing?

Yes, but with a caveat. Malt extract (LME/DME) already has color built in. Use the EBC rating printed on the extract container and treat it as a single malt input. Light LME is typically 5-8 EBC, amber LME is 20-30 EBC, and dark LME is 60-80 EBC. The weight should be the dry-equivalent weight of the extract.

Why does the same recipe look different in different glasses?

Beer color perception depends on glass shape, thickness and lighting. A thin-walled glass shows lighter color than a thick pint glass. Color also changes with clarity - hazy beer appears lighter because suspended particles scatter light. The EBC/SRM value is measured in a standardized lab cuvette at specific light wavelength (430 nm), eliminating these variables.

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