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Heart & coagulation

Factor XI activity: convert % to IU/mL

IU/mL = % × 0.01

Calculator

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

Conversion formulas

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

Conversion table

Highlighted: values inside the adult reference range.

%IU/mL
400.4
600.6
800.8
1001
1201.2
1401.4
1601.6
1801.8
2002
2202.2
2402.4
2602.6
2802.8
3003
3203.2
3403.4

Reference range

70 – 160 % = 0.7 – 1.6 IU/mL

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

Frequently asked questions

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

IU/mL = % × 0.01. For example, 120 % equals 1.2 IU/mL.

How many IU/mL are 120 %?

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

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

% = IU/mL × 100.

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