Syrup to Water Ratio
Add the two numbers to count the parts, then divide the batch by that. Making 400 mL at 1:4 gives five parts — 80 mL syrup and 320 mL water.
Your numbers
Syrup (mL)
80mL
Water to add (mL)
320mL
Percentage
20%
Formula
Syrup (mL) = Volume (mL) × Syrup parts ÷ (Syrup parts + Water parts)
1:4 means one part syrup to four of water, not one part in four. Confusing the two is a 25% error in strength.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Volume (mL) (mL)Volume in millilitres. | 400 | 0 and up |
| Syrup partsHow many parts of the ratio are syrup. | 1 | 0 and up |
| Water partsHow many parts of the ratio are water. | 4 | 0 and up |
Step by step
Quick reference table
Results when only Volume (mL) (mL) changes and everything else stays put.
| Volume (mL) (mL) | Syrup (mL) (mL) | Water to add (mL) (mL) | Percentage (%) |
|---|---|---|---|
| 200 | 40 | 160 | 20 |
| 300 | 60 | 240 | 20 |
| 400 | 80 | 320 | 20 |
| 600 | 120 | 480 | 20 |
| 800 | 160 | 640 | 20 |
What each result means
| Result | At default values |
|---|---|
| Syrup (mL) (mL)The amount of syrup to actually pour. | 80 |
| Water to add (mL) (mL)How much water to pour in to hit the target. | 320 |
| Percentage (%)A share expressed out of 100. | 20 |
Common mistakes
1:4 means one part syrup to four of water, not one part in four. Confusing the two is a 25% error in strength.
Glossary
- Volume (mL)
- Volume in millilitres.
- Syrup parts
- How many parts of the ratio are syrup.
- Water parts
- How many parts of the ratio are water.
- Syrup (mL)
- The amount of syrup to actually pour.
- Water to add (mL)
- How much water to pour in to hit the target.
- Percentage
- A share expressed out of 100.
Frequently asked questions
Q. How is Syrup to Water Ratio calculated?
Syrup (mL) = Volume (mL) × Syrup parts ÷ (Syrup parts + Water parts) — Add the two numbers to count the parts, then divide the batch by that. Making 400 mL at 1:4 gives five parts — 80 mL syrup and 320 mL water.
Q. Can you walk through an example?
With Volume (mL) 400mL, Syrup parts 1, Water parts 4, the answer is Syrup (mL) 80mL.
Q. What do I need to enter?
Enter Volume (mL), Syrup parts, Water parts. The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Volume (mL) (mL) moves the answer to Volume (mL) (mL) 200 → Syrup (mL) (mL) 40 and Volume (mL) (mL) 800 → Syrup (mL) (mL) 160. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
1:4 means one part syrup to four of water, not one part in four. Confusing the two is a 25% error in strength.
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