Split by Ratio
Divide the total by the sum of the ratio parts, then multiply by each part. 1,200,000 split 3:2 gives 720,000 and 480,000.
Your numbers
A's share
720,000
B's share
480,000
A share
60%
Formula
A's share = Total × A ÷ (A + B)
Rounding can leave the two shares off by one unit — give the remainder to one side to reconcile.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| TotalEvery item added together — check whether tax or tip is inside it. | 1,200,000 | 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 |
Step by step
Quick reference table
Results when only Total changes and everything else stays put.
| Total | A's share | B's share | A share (%) |
|---|---|---|---|
| 600,000 | 360,000 | 240,000 | 60 |
| 900,000 | 540,000 | 360,000 | 60 |
| 1,200,000 | 720,000 | 480,000 | 60 |
| 1,800,000 | 1,080,000 | 720,000 | 60 |
| 2,400,000 | 1,440,000 | 960,000 | 60 |
What each result means
| Result | At default values |
|---|---|
| A's shareThe slice A gets once the ratio is applied. | 720,000 |
| B's shareThe slice B gets once the ratio is applied. | 480,000 |
| A share (%)The percentage that applies to the first item. | 60 |
Common mistakes
Rounding can leave the two shares off by one unit — give the remainder to one side to reconcile.
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.
- A's share
- The slice A gets once the ratio is applied.
- B's share
- The slice B gets once the ratio is applied.
- A share
- The percentage that applies to the first item.
Frequently asked questions
Q. How is Split by Ratio calculated?
A's share = Total × A ÷ (A + B) — Divide the total by the sum of the ratio parts, then multiply by each part. 1,200,000 split 3:2 gives 720,000 and 480,000.
Q. Can you walk through an example?
With Total 1,200,000, A 3, B 2, the answer is A's share 720,000.
Q. What do I need to enter?
Enter Total, A, B. 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 600,000 → A's share 360,000 and Total 2,400,000 → A's share 1,440,000. 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 two shares off by one unit — give the remainder to one side to reconcile.
Related calculators
Tax rates and interest conventions differ by country and product — check your contract for real transactions.