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Heart & coagulation

Factor XI activity: convert IU/mL to %

% = IU/mL × 100

Calculator

Enter a value in any unit and all other units fill in.

Conversion formulas

IU/mL → %% = IU/mL × 100
% → IU/mLIU/mL = % × 0.01

Conversion table

Highlighted: values inside the adult reference range.

IU/mL%
0.440
0.660
0.880
1100
1.2120
1.4140
1.6160
1.8180
2200
2.2220
2.4240
2.6260
2.8280
3300
3.2320
3.4340

Reference range

0.7 – 1.6 IU/mL = 70 – 160 %

Source: Newcastle Hospitals Laboratories: Factor XI Assay · Last reviewed: 2026-10-19

Frequently asked questions

How do I convert Factor XI activity from IU/mL to %?

% = IU/mL × 100. For example, 1.2 IU/mL equals 120 %.

How many % are 1.2 IU/mL?

1.2 IU/mL equal 120 % (Factor XI activity).

How do I convert Factor XI activity from % back to IU/mL?

IU/mL = % × 0.01.

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