Ankle-Brachial Index Calculator
Result
Ankle-Brachial Index Calculator This ankle-brachial index (ABI) calculator screens for peripheral artery disease by comparing the blood pressure at your ankle with the pressure in your arm. Enter the systolic pressure measured at the ankle and at the arm, — free online calculator.
Formula
- Ankle-Brachial Index Calculator calculates its result from Ankle Systolic BP (mmHg), Arm Systolic BP (mmHg). It uses the formula ABI = Ankle Systolic BP ÷ Arm Systolic BP. Change any input to recalculate the result instantly. This is an informational calculation and is not medical advice.
- The main inputs are Ankle Systolic BP, Arm Systolic BP. Enter them in the units and format shown in the calculator.
- Use the measurement units shown beside each field. The result is an estimate and should be interpreted in context.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Ankle-Brachial Index
- Ankle Systolic BP: 120 mmHg
- Arm Systolic BP: 120 mmHg
Using Ankle Systolic BP (mmHg) = 120, Arm Systolic BP (mmHg) = 120, the calculated result is 1.
Sample result: Calculating…
Frequently asked questions
What does the Ankle-Brachial Index calculate?
Ankle-Brachial Index Calculator This ankle-brachial index (ABI) calculator screens for peripheral artery disease by comparing the blood pressure at your ankle with the pressure in your arm. Enter the systolic pressure measured at the ankle and at the arm, — free online calculator.
Which values should I enter?
Enter Ankle Systolic BP, Arm Systolic BP using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: ABI = Ankle Systolic BP ÷ Arm Systolic BP.
Why might my result differ from another source?
Results can differ because measurement methods, rounding and assumptions vary. This calculator is an estimate and is not a medical diagnosis.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.