Simple Syrup Ratio Calculator
Turn water and ratio into sugar weight and Brix for syrups.
What it does
Simple syrup is sugar dissolved in water for drinks, desserts, and canning. Ratios set sweetness and thickness. A 1:1 syrup pours easy for iced tea. A 2:1 rich syrup suits cocktails with less water per sweet sip.
The tool above takes water weight and ratio and returns sugar weight, finished syrup weight, and Brix. The defaults 8 oz water at 1:1 match the worked example, so the page opens showing 8 oz sugar. Switch to metric for grams.
Brix is sugar mass over total mass times 100. For 1:1, 8 oz sugar in 16 oz total is 50.0 percent. For 2:1, 16 oz sugar in 24 oz total is 66.7 percent. Weighing beats cups because packed cups vary while grams and ounces repeat.
Heat helps dissolve without boiling off water. Stir over gentle heat until the liquid turns clear, then cool before bottling. Rich syrups resist mold longer due to lower water activity, but all syrups keep best cold in clean bottles.
This page shows the formula, one full hand checked example at 8 oz 1:1, a reference table of ratios, and practice checks that run through the tool in both unit systems.
How to use
- Pick Imperial (oz) or Metric (g).
- Weigh the water. In metric 1 ml equals 1 g.
- Pick 1:1, 2:1, or 1:2 for the sugar to water ratio.
- Read Sugar needed in the active unit.
- Read Finished syrup as water plus sugar.
- Heat gently, stir until clear, cool, then refrigerate.
Formula
- water
- Water weight in g or oz.
- ratio
- 1 for 1:1, 2 for 2:1, 0.5 for 1:2.
- Brix
- Sugar percent by weight.
Ratios here are by weight for repeatability. Volume cups vary with grain and packing. For honey or other sugars, Brix still follows sugar mass over total mass.
Worked example
Example: 8 oz water at 1:1
Make classic syrup with 8 oz water at 1 to 1 by weight.
- Write water = 8 oz, ratio = 1.
- Sugar: 8 x 1 = 8 oz.
- Total: 8 + 8 = 16 oz.
- Brix: 100 x 8 / 16 = 50.0 %.
- Metric mirror: 227 g water gives 227 g sugar and 454 g total.
- Method: warm, stir until clear, cool, bottle cold.
Reference table
| Ratio | Sugar per 100 g water | Brix |
|---|---|---|
| 1:2 light | 50 g | 33.3 % |
| 1:1 classic | 100 g | 50.0 % |
| 2:1 rich | 200 g | 66.7 % |
| Example 8 oz 1:1 | 8 oz | 50.0 % |
Limits
- Weight ratios only. Cup volumes vary and shift Brix.
- White sugar assumed. Brown sugar and honey add water and flavor.
- No shelf life model. Storage, pH, and hygiene set safety.
- Boiling off water concentrates syrup above target Brix.
Common mistakes
- Mixing weight with volume, so a cup of sugar is treated as 8 oz exactly.
- Boiling hard and losing water, which pushes Brix above plan.
- Pouring hot syrup into a cold bottle that cracks or spills.
- Skipping the scale and packing cups differently each batch.
- Storing at room temp for weeks and missing mold on light syrups.
Try it yourself
Quick checks. Answers sit tucked under each question.
8 oz water at 2:1?
Sugar 16 oz, total 24 oz, Brix 66.7 %.
8 oz water at 1:2?
Sugar 4 oz, total 12 oz, Brix 33.3 %.
Questions
What is 1:1 simple syrup?
Equal weights sugar and water. Brix 50.0 percent.
What is Brix?
Sugar mass over total mass times 100.
Cups or scale?
Scale. Cups pack differently, grams and ounces repeat.
How long does syrup keep?
Cold and clean, classic a few weeks, rich longer. Watch for cloud or mold.
Can I use honey?
Yes, but honey holds water, so Brix math needs its solids share.
Why heat?
Gentle heat dissolves fast without boiling off water.