% Free PSA unit converter
Convert % free PSA between % and ratio (0–1). Type in either box. The factors come from our catalog and are checked by code.
AI-verified against cited sources. Awaiting expert reviewLast reviewed 2026-10-03
1 % = 0.01 ratio (0–1). Nothing you type here leaves your browser.
The conversion
- 1 % = 0.01 ratio (0–1)From % to ratio (0–1): divide by 100. Back again: multiply by 100.
Common values
From zero to about twice the usual upper limit, plus the usual limits themselves.
| % | ratio (0–1) |
|---|---|
| 10 | 0.1 |
| 15 | 0.15 |
| 18 | 0.18 |
| 20 | 0.2 |
| 25 | 0.25 |
| 30 | 0.3 |
| 40 | 0.4 |
| 50 | 0.5 |