Sugar Syrup Calculator for Beekeepers (1:1 & 2:1)

Quickly work out how much sugar and water you need for 1:1 and 2:1 bee syrup. Choose your ratio, then either enter a sugar weight or a target final volume and we’ll do the rest.

Sugar Syrup Calculator

Select your syrup strength and calculation mode, then enter one value. We’ll estimate volumes using standard densities.

Enter the weight of granulated sugar you’ll use.

Sugar Syrup — FAQs

What’s the difference between 1:1 and 2:1 syrup?
1:1 (equal sugar and water by weight) is lighter, used for spring stimulation and comb building. 2:1 (twice the sugar to water) is thicker, used to build winter stores late in the season.
Do I need to heat the water?
For 1:1, heating isn’t necessary—stir until fully dissolved. For 2:1, warm (not hot) water helps the sugar dissolve.
How accurate are the volume estimates?
We use typical densities at ~20 °C (1:1 ≈ 1.23 kg/L, 2:1 ≈ 1.33 kg/L). Actual volume varies with temperature, sugar grain size, and mixing method.
When should I feed 1:1 and when 2:1?
Use 1:1 in spring/early season for stimulation and drawing comb. Use 2:1 in late summer/early autumn to add stores quickly ahead of winter.
Can I store sugar syrup, and for how long?
Fresh is best. If you must store, keep it in clean, sealed containers out of sunlight and use within 1–2 weeks. Discard if it ferments, smells off, or shows mould.
Should I use white or brown sugar?
Use white granulated sugar. Avoid brown or unrefined sugars as they contain minerals and by-products that can upset bees.
How much should I feed?
It depends on colony strength, stores, and season. Weigh hives or inspect combs; aim for adequate stores before winter (varies by hive type and region). Feed in smaller, regular amounts to avoid robbing.