ABI Calculator - Ankle-Brachial Index

Your details

Measure both arms. Use the higher of the two readings. This is the denominator for both ABI calculations.
mmHg
Use the higher of the dorsalis pedis and posterior tibial artery readings on the right leg.
mmHg
Use the higher of the dorsalis pedis and posterior tibial artery readings on the left leg.
mmHg
Right ABIBorderline
1.04

Right ankle pressure divided by the highest brachial pressure

Left ABI0.98
Lower ABI (overall risk)0.98
Right leg classificationNormal
Left leg classificationBorderline
0.98
Severe PAD<0.5Moderate PAD0.5-0.8Mild PAD0.8-0.9Borderline0.9-1Normal1-1.4Calcified1.4+

Overall ABI classification: Borderline (lower ABI is 0.98).

  • Right leg ABI: 1.04 - Normal.
  • Left leg ABI: 0.98 - Borderline.

Next stepBorderline result. Consider exercise testing and optimising cardiovascular risk factors (blood pressure, cholesterol, smoking cessation).

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