Ratio Converter
Convert between percent, per mille, ppm, ppb, decimal ratios and the Japanese wari, bu and rin units. Just enter a value and pick a unit to see a full conversion table.
Input
Input unit
Percent（%）
Result
In percent (%)
50%
| Unit | Symbol | Converted value |
|---|---|---|
| Decimal (ratio) | — | 0.5 |
| Percent | % | 50 |
| Per mille | ‰ | 500 |
| Wari (1/10) | 割 | 5 |
| Bu (1/100) | 分 | 50 |
| Rin (1/1000) | 厘 | 500 |
| ppm | ppm | 500,000 |
| ppb | ppb | 500,000,000 |
How it works
- Enter a value and select its unit to convert it at once into percent, per mille, ppm, ppb, decimal ratio, and the Japanese wari, bu and rin.
- The reference is the plain ratio (decimal 1.0 = 100%). For example, 50% equals a ratio of 0.5, and ppm expresses how many parts per one million something makes up.
- Wari, bu and rin are Japanese fractional units (used for batting averages and the like): 1 wari = 10%, 1 bu = 1%, and 1 rin = 0.1%.
- ppm (parts per million) and ppb (parts per billion) are handy for very small proportions such as water quality or concentration figures.
- Very large or very small converted values are shown in exponential notation, while the rest use grouped digits for easy reading.
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Ratio Converter