Split Three Ways by Ratio
Add the ratio numbers to count the parts, divide the total by that to value one part, then multiply by each person’s number. At 3:2:1 there are six parts, so 600,000 splits into 300,000, 200,000 and 100,000.
Your numbers
A's share
300,000
B's share
200,000
C's share
100,000
Formula
A's share = Total × A ÷ (A + B + C)
Rounding can leave the three shares a unit or two off the total. Agree in advance who absorbs the remainder.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| TotalEvery item added together — check whether tax or tip is inside it. | 600,000 | 0 and up |
| AThe first number of the ratio — the 2 in 2:3. | 3 | 0 and up |
| BThe second number of the ratio — the 3 in 2:3. | 2 | 0 and up |
| CThe third number of the ratio — the 1 in 3:2:1. | 1 | 0 and up |
Step by step
Quick reference table
Results when only Total changes and everything else stays put.
| Total | A's share | B's share | C's share |
|---|---|---|---|
| 300,000 | 150,000 | 100,000 | 50,000 |
| 450,000 | 225,000 | 150,000 | 75,000 |
| 600,000 | 300,000 | 200,000 | 100,000 |
| 900,000 | 450,000 | 300,000 | 150,000 |
| 1,200,000 | 600,000 | 400,000 | 200,000 |
What each result means
| Result | At default values |
|---|---|
| A's shareThe slice A gets once the ratio is applied. | 300,000 |
| B's shareThe slice B gets once the ratio is applied. | 200,000 |
| C's shareThe slice C gets once the ratio is applied. | 100,000 |
Common mistakes
Rounding can leave the three shares a unit or two off the total. Agree in advance who absorbs the remainder.
Glossary
- Total
- Every item added together — check whether tax or tip is inside it.
- A
- The first number of the ratio — the 2 in 2:3.
- B
- The second number of the ratio — the 3 in 2:3.
- C
- The third number of the ratio — the 1 in 3:2:1.
- A's share
- The slice A gets once the ratio is applied.
- B's share
- The slice B gets once the ratio is applied.
- C's share
- The slice C gets once the ratio is applied.
Frequently asked questions
Q. How is Split Three Ways by Ratio calculated?
A's share = Total × A ÷ (A + B + C) — Add the ratio numbers to count the parts, divide the total by that to value one part, then multiply by each person’s number. At 3:2:1 there are six parts, so 600,000 splits into 300,000, 200,000 and 100,000.
Q. Can you walk through an example?
With Total 600,000, A 3, B 2, C 1, the answer is A's share 300,000.
Q. What do I need to enter?
Enter Total, A, B, C. 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 Total moves the answer to Total 300,000 → A's share 150,000 and Total 1,200,000 → A's share 600,000. 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?
Rounding can leave the three shares a unit or two off the total. Agree in advance who absorbs the remainder.
Related calculators
Tax rates and interest conventions differ by country and product — check your contract for real transactions.