ClarityHow to use this tool
- Enter first part, second part.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
Input reference and sample values
Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.
| Input | Format and units | Sample |
|---|---|---|
| First part | Numeric value. Zero or positive. | 12 |
| Second part | Numeric value. Minimum: 1. | 18 |
Result for these sample inputs
2:3
- First part as share of total (%)
- 40
- Second part as share of total (%)
- 60
Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.
The method, explained
Divide both parts by their greatest common divisor. A part’s percentage of the combined total is part ÷ (a + b) × 100.
12:18 simplifies to 2:3. The first part is 40% of the combined total.
What to keep in mind
Use nonnegative whole numbers with a positive second part. A part-to-part ratio is different from a part-to-whole fraction.
Common questions
Is 2:3 the same as 2/3 of the whole?
No. In a 2:3 split, the first part is 2 out of 5 total parts.
Can the first part be zero?
Yes. For example, 0:5 simplifies to 0:1.
Methodology maintained by ClarityKit. How these tools are built and checked.