🐝 Sugar Syrup Ratio Calculator

Enter your desired total syrup amount and ratio (1:1 for spring/stimulative feeding, 2:1 for fall/overwintering feeding) to see exact sugar and water amounts.

Desired total amount (g)

Ratio (sugar:water)

How the split is worked out

You give a finished weight of syrup and pick a ratio; the calculator divides that weight into parts and hands each part to sugar or water:

total parts = sugar parts + water parts
per part    = desired total / total parts
sugar (g)   = sugar parts × per part
water (g)   = water parts × per part

At 1:1 with a 2000 g target that is two parts of 1000 g, so 1000 g of sugar and 1000 g of water. Switch to 2:1 and the same 2000 g becomes three parts of 666.67 g: 1333 g sugar and 667 g water, rounded to whole grams.

Weight, not volume, and which ratio when

The tool works entirely in grams. Water is convenient here because 1000 g is one litre, but granulated sugar is not - a kilogram of it is roughly 1.2 litres loose, so a jug-measured 1:1 is a different syrup from this one.

1:1 is about 50% sugar by weight: the thin spring mix, used to stimulate build-up, start package bees and help a colony draw foundation.
2:1 is about 67% sugar by weight. Less water for the bees to evaporate makes it the autumn mix for topping up winter stores.

These two ratios are conventions, not rules. How much a colony needs, and how late thin syrup can safely be fed, varies with climate, colony size and hive type. Take quantities and timing from your local beekeeping association or mentor.

Frequently asked questions

How much sugar is in 2 kg of 1:1 bee syrup?

One kilogram. The 1:1 ratio splits the finished weight in half, so 2000 g of syrup is 1000 g of sugar dissolved into 1000 g (one litre) of water.

Is beekeeping syrup ratio measured by weight or volume?

This calculator uses weight, the less ambiguous of the two. Sugar is denser than water, so a 1:1 mixed by volume comes out stronger than a 1:1 mixed on scales.

What is the difference between 1:1 and 2:1 syrup?

Sugar concentration. 1:1 is roughly half sugar and reads to the bees like a nectar flow; 2:1 is roughly two-thirds sugar and carries far less water to evaporate, which is why it is mixed for autumn feeding.