Sugar Syrup Viscosity Calculator – Brix, Concentration & Flow

🍯 Sugar Syrup Viscosity Calculator

Calculate dynamic viscosity, relative viscosity & flow characteristics from Brix or concentration

Quick Presets
🧪Calculator Inputs
Unit System:
Choose how you know your syrup concentration
0°Bx = pure water, ~67°Bx = saturation at 20°C
Temperature in °C (affects viscosity significantly)
Sugar type affects viscosity by up to 20%
Volume in liters for flow rate calc
Diameter in mm for flow calculation
✅ Viscosity Results
⚠ Important Notes: Viscosity values are based on empirical data for sucrose solutions (Bubnik et al., 1995; ICUMSA). Temperature has a major effect: viscosity roughly halves for every 10°C rise above 20°C. Values at concentrations above ~80°Bx are extrapolated and should be confirmed by measurement.
📊Sucrose Syrup Viscosity Reference (20°C)
Brix (°Bx) % w/w Density (g/cm³) Dyn. Viscosity (mPa·s) Kin. Viscosity (mm²/s) Consistency
00%0.9981.001.00Water
109.5%1.0381.341.29Very thin
2019.1%1.0811.801.67Thin
3028.7%1.1262.902.58Light
4038.3%1.1756.205.28Light-med.
5048.0%1.22815.412.5Medium
6057.7%1.28458.045.2Med-heavy
6562.5%1.31413099.0Heavy
7067.0%1.345370275Very heavy
7571.5%1.3751350982Ultra heavy
8076.1%1.40739002773Syrup/paste
8580.7%1.437~18,000~12,524Near solid
🌡Temp. Correction Factor (Sucrose 60°Bx)
Temp (°C) Visc. (mPa·s) Factor vs 20°C
10°C~1302.24x
20°C58.01.00x
30°C28.00.48x
40°C14.50.25x
50°C8.100.14x
60°C4.800.083x
80°C2.000.034x
🧵Common Syrup Type Comparison (60°Bx, 20°C)
Syrup Type Visc. (mPa·s) vs Sucrose
Sucrose581.00x
Invert sugar500.86x
Glucose (DE42)951.64x
Glucose (DE60)721.24x
HFCS-42480.83x
HFCS-55520.90x
Honey (raw)~2,50043x
🔄Unit Conversions – Viscosity & Concentration
From To Multiply by Example
mPa·s (millipascal-second)cP (centipoise)1.00058 mPa·s = 58 cP
Pa·smPa·s10000.058 Pa·s = 58 mPa·s
cP (centipoise)poise (P)0.0158 cP = 0.58 P
mm²/s (cSt)ft²/s1.076 × 10⁻⁵45 cSt = 0.000484 ft²/s
°Brix (Bx)% w/w sucrose~0.95550°Bx ≈ 47.8% w/w
% w/w°Brix~1.04750% w/w ≈ 52.4°Bx
g/mL densitylb/gal (US)8.3451.284 g/mL = 10.71 lb/gal
💡 Viscosity Tips: At Brix values below 40°Bx, viscosity differences between sugar types are minimal (<10%). Above 65°Bx, chain-length and molecular weight of the sugar significantly impact viscosity. Glucose syrups can be 1.5–2x more viscous than sucrose at the same Brix due to higher molecular weight polymers. For critical industrial applications, always verify with a viscometer.

Sugar syrup is one of the easiest things to make in the kitchen. Just boil sugar together with water. That liquid has the same sweetness as granulated sugar.

For simple syrup you cook equal amounts of sugar and water until the mix thickens a bit. Plain granulated sugar works best and water directly from the tap. The syrup is done when no sugar crystals stay in the pot

How to Make Simple Syrup

The usual proportion for simple syrup is one cup water and one cup sugar. You can however alter it for a thikcer or thinner result. 2:1 rich sugar syrup has more sugar, while 1:1 is the standard.

Simple syrup never really thickens by boiling, to make it thick you simply use a bigger sugar proportion than water.

There is also a no-cook way. Mix equal parts of water and sugar until fully settled, then wait 10 to 15 minutes, mixing often, until the sugar dissolves and the liquid clears. Low heat helps the sugar dissolve more quickly, but you avoid boiling.

After cooling, pour it in a clean bottle and keep it in the refrigerator. If the liquid seems cloudy or forms mold, throw it away.

Simple syrup is a main ingredient for cocktails and other drinks, for instance iced coffee, because it mingles well with other liquids. Unlike granulated sugar, it does not form a gritty deposit in the glass. It is useful also for cold drinks like iced tea, where regular sugar hardly dissolves.

A cocktail recipe commonly requires half to one ounce of simple syrup.

Sugar syrup is not just for drinks. It is a perfect sweet syrup to add moisture and taste to cakes or fruitcakes. In sorbet-making it helps to reduce the formation of ice crystals.

Brown sugar syrup is another good option, simply mix water with brown sugar. Rich syrup from brown sugar and organic cane sugar brings out the cane taste, which goes well with the molasses of brown sugar to create a richer aroma.

Powdered sugar is not right for simple syrup because of its anticaking agents, texture and liquid behavior, which change the syrup. It can make the syrup too thick or gel instead of stay clear. Corn syrup and glucose both are invert sugars, so either of them works for recipes.

Agave is a good replacement for simple syrup in cocktails, because it is stable, lasts long and is usually available.

Strawberry syrup, lavender syrup, brown sugar cinnamon syrup and blackberry syrup are fun varieties to tryathome.

Sugar Syrup Viscosity Calculator – Brix, Concentration & Flow

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