Sugar Syrup Brix Converter

Understanding Brix and Sugar Syrup Concentration

Brix (symbol: Bx) is a measurement of the sugar content in a liquid solution. One degree Brix means that 100 grams of solution contains 1 gram of sucrose. So a 50 Brix syrup is 50% sugar by weight. The Brix scale was developed by German scientist Adolf Brix in the 19th century and is now the international standard for measuring sugar concentration in food and beverages.

Brix to Sugar-Water Ratio:

The sugar-to-water ratio tells you how much sugar to dissolve in how much water to reach a target Brix.

Sugar (grams) = Brix / (100 - Brix) × Water (grams)

For example, to make a 50 Brix (1:1) simple syrup: Sugar = 50 / (100 - 50) × 100 = 100 grams sugar per 100 grams water

Brix to Specific Gravity:

Specific gravity is the density of the solution compared to pure water. You will see this approximation quoted everywhere:

Specific Gravity ≈ 1 + (Brix / (258.6 - 0.8842 × Brix))

It is a brewing formula and it is not accurate at syrup strength. It comes from the wine and beer world, where a must sits somewhere around 20 Brix, and it is fine down there. Push it up to syrup concentrations and it drifts high: at 50 Brix it returns 1.233 against a measured 1.230, and at 67 Brix it returns 1.336 against 1.329. Small numbers, but a hydrometer reads to three decimal places and those errors are larger than the instrument.

This page therefore does not use it. The calculator interpolates the published sucrose solution density table instead, so it agrees with the reference figures below by construction rather than by luck.

A refractometer measures Brix directly, while a hydrometer measures specific gravity. Neither is right on a syrup you have just made and not stirred properly, so mix it thoroughly and let it come to room temperature before reading either one.

Common Syrup Types:

A 1:1 simple syrup is not always 50 Brix

Worth knowing before you trust a bar recipe. Brix is a ratio by weight, and most bartenders measure 1:1 by volume, with a cup of each.

A US cup of granulated sugar weighs about 200 g and a cup of water about 237 g. So “equal parts” by volume is really 200 g of sugar to 237 g of water, which works out at 46 Brix, not 50. It is a small difference in the glass and a real one on a refractometer, and it is the usual reason a measured syrup does not read what the recipe says it should.

Weigh both if you want a syrup you can reproduce. Sugar and water at 1:1 by weight really is 50 Brix, every time.

Practical Applications:

• Bartending: Standard simple syrup is 1:1 (50 Brix). Rich syrup at 2:1 (67 Brix) lasts longer and adds less dilution to cocktails.
• Canning: USDA recommends specific syrup concentrations for different fruits to preserve texture and flavor.
• Confectionery: Candy stages (thread, soft ball, hard ball, crack) correspond to temperatures where water evaporates and Brix increases.
• Winemaking: Brix of grape must predicts the final alcohol content. Roughly, Alcohol % ≈ Brix × 0.55.

Measurement Tools:

• A refractometer measures Brix by how much light bends passing through the liquid. Quick and needs only a drop.
• A hydrometer floats in the liquid and reads specific gravity from a scale. Needs a larger sample but is very accurate.