RATIO SPLIT CALCULATOR

Ratio Split Calculator

Split a total into two or three shares from an A:B:C ratio, and see each share plus its percentage of the whole.

How a ratio split works

A ratio such as 2:3:5 is a set of relative weights. Add the parts, then give each share that part of the total. The parts do not have to add to 100; 2:3:5, 20:30:50, and 0.2:0.3:0.5 produce the same split.

Ratio total = A + B + C
Share A = total × A ÷ ratio total
A percentage = A ÷ ratio total × 100%
Shares B and C use the same steps

Example

$1,000 split 2:3:5 has a ratio total of 10. A receives $200 (20%), B receives $300 (30%), and C receives $500 (50%). Enter 0 for C to split into two parts.

Whole items and remainders

The mathematical shares can include fractions. If you are dividing whole items or whole dollars, rounding each share can leave a remainder that has to be assigned by hand. This page keeps the exact proportional result.

Frequently asked questions

Do the parts have to add to 100?

No. Any positive scale with the same relative weights produces the same percentages.

Can I split into only two parts?

Yes. Enter 0 for part C. At least one of the three parts must be greater than zero.

Can the ratio use decimals?

Yes, as long as every part is a non-negative number.

Why might the displayed shares miss the total by a cent?

The screen rounds currency to two decimal places. Internal shares still use the full ratio.

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Calculations run in your browser. Values are not uploaded or stored.