VWF Activity unit converter
Convert VWF activity between % and IU/mL. 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 IU/mL. Nothing you type here leaves your browser.
The conversion
- 1 % = 0.01 IU/mLFrom % to IU/mL: divide by 100. Back again: multiply by 100.
% and IU/dL give the same number.
Common values
From zero to about twice the usual upper limit, plus the usual limits themselves.
| %same as IU/dL | IU/mL |
|---|---|
| 30 | 0.3 |
| 50 | 0.5 |
| 51 | 0.51 |
| 100 | 1 |
| 150 | 1.5 |
| 200 | 2 |
| 215 | 2.15 |
| 250 | 2.5 |
| 300 | 3 |
| 350 | 3.5 |
| 400 | 4 |
Usual ranges in each unit
What labs print as the reference range, by who was tested. Sources for each range are on the VWF Activity page.
| Who | % | IU/mL |
|---|---|---|
| 18+ | 51–215 | 0.51–2.15 |
| under 7 | 51–215 | 0.51–2.15 |
| 7–9 | 52–176 | 0.52–1.76 |
| 10–11 | 60–195 | 0.6–1.95 |
| 12–13 | 50–184 | 0.5–1.84 |
| 14–15 | 50–203 | 0.5–2.03 |
| 16–17 | 49–204 | 0.49–2.04 |