Calculator
Sugar syrup for bees, how much sugar, how much water.
Pick the ratio and how much syrup you want: the sugar and water to mix, by weight or by volume, with Oregon State University Extension's notes on heavy syrup and when to stop.
The syrup
Ratio, sugar to water
Measure by
kg
Mix
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Sugar-
Water-
Ratio-
Oregon State University Extension's notes on heavy syrup and on when to stop feeding liquid syrup are below.
What Oregon State University Extension says
- For overwintered nucleus colonies, its guide PNW 682 starts feeding with heavy syrup of two parts sucrose (sugar) to one part water in August, or as soon as possible after the nectar flow ends, so the colony has time to process it.
- Syrup expands as it warms and can run out of a jar feeder onto the bees, so the guide shelters feeding jars from sunlight.
- Once daytime temperatures drop below 57 °F (about 14 °C), its beekeeping Q&A says to stop feeding liquid syrup and switch to a solid sugar board: liquid syrup puts too much moisture in the colony.
Weight or volume
PNW 682 gives the ratio in parts and does not say whether by weight or by volume, so the calculator does both. The arithmetic is the same: sugar = total × R ÷ (R + 1) and water = total ÷ (R + 1), where R is the parts of sugar to one part of water.
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