Sugar Syrup Ratio Calculator
Pick a ratio, enter how much sugar you have, get the water amount and finished volume. Covers 1:1 spring stimulation, 2:1 fall feeding, and thin medication syrup. Free, no signup, all math in your browser.
Spring buildup, package installation, light flow gaps
Use granulated white cane or beet sugar. Avoid brown, raw, or organic sugar — molasses content harms bees.
Recipe
- Sugar
- 10 lb
- (4.5 kg)
- Water
- 4.8 qt
- (4.5 L · 10 lb)
Mimics natural nectar viscosity. Stimulates brood rearing because bees treat it like an incoming flow. Use February–June and during light summer dearth.
How to mix
Heat the water to near-boiling but do not boil — boiling caramelizes sugar at the temperatures required to dissolve heavy syrup, and caramelized sugar can cause dysentery. Remove from heat, add sugar, stir until fully dissolved, cool to body temperature before feeding.
For 2:1 syrup, hot water dissolves much faster than cold. Adding a teaspoon of Honey-B-Healthy or lemongrass + spearmint oil helps with feeder uptake and discourages mold.
Sugar syrup for bees: which ratio, and when
1:1 (equal parts sugar and water, by weight) is the spring syrup. It is close to nectar in consistency, and bees treat it like an incoming flow, so it encourages brood rearing. Use it for spring build-up, new packages and nucs, and short gaps in the flow.
2:1 (two parts sugar to one part water, by weight) is the fall syrup. It is heavy, so bees can store it without much water to evaporate and cap it before winter. Finish before nights sit around 50°F (10°C); after that, switch to solid food. The winter feed calculator tells you how much a colony still needs.
1:2 (thin) is for mixing medications or for queen introduction. Bees use it up rather than storing it.
By weight or by volume? A cup of granulated sugar weighs about 200 g and a cup of water about 237 g, so mixing equal cups gives a syrup slightly thinner than a true 1:1. For feeding, that is close enough. Choosing the right ratio for the season matters more.
Frequently asked questions
What is the sugar syrup ratio for bees?
Two ratios cover most feeding: 1:1 (equal parts sugar and water) in spring to stimulate brood rearing, and 2:1 (two parts sugar to one part water) in fall to build winter stores. A thin 1:2 syrup is used for mixing medications or for queen introduction. This calculator mixes by weight.
What is 1:1 sugar syrup used for?
Spring build-up, installing packages and nucs, and short gaps in the flow. It is close to nectar in consistency, and bees respond to it like an incoming flow by rearing more brood. It is not a winter food.
What is 2:1 sugar syrup used for?
Fall feeding for winter stores. It is heavy, so bees can store it with little water to evaporate and cap it before winter. Finish feeding syrup before nighttime temperatures sit around 50°F (10°C). Below that, bees stop taking it and it can ferment, so switch to fondant or dry sugar.
Should I mix sugar syrup by weight or by volume?
By weight, if you can. A cup of granulated sugar weighs about 200 g (USDA FoodData Central) while a cup of water weighs about 237 g, so equal cups give a syrup slightly thinner than a true 1:1. The difference is small for feeding. Picking the right ratio for the season matters more than hitting it exactly.
Free guide: Which Syrup, When, and Why
You have the recipe. This is which ratio to feed when: what 1:1, 2:1 and thin syrup each tell the colony, the 50°F line where syrup season ends, mixing tables by batch size, and a per-hive feeding log. 7 pages, printable.
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Log every feeder fill, syrup ratio, and consumption rate per hive. See which colonies are taking more.
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HiveSense logs feeder fills and consumption per hive so you can see which colonies are still light heading into winter.
New to feeding? Read the starter kit guide