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How to Calculate Fixed vs Adjustable Rate

Compare the total lifetime cost of a fixed-rate vs adjustable-rate mortgage.

The Formula

costDiff = abs(fixedTotal - armTotal)

The fixed vs adjustable rate formula uses the mathematical relationship: costDiff = abs(fixedTotal - armTotal). Each variable in the formula represents a measurable quantity that affects the final result.

Step-by-Step Method

  1. 1Identify all input values needed for the fixed vs adjustable rate calculation.
  2. 2Substitute your known values into the formula: costDiff = abs(fixedTotal - armTotal).
  3. 3Perform the arithmetic operations in the correct order (PEMDAS/BODMAS).
  4. 4Check that your result has the correct units and is within a reasonable range.
  5. 5Verify using the interactive Fixed vs Adjustable Rate Calculator to confirm your answer.

Related Topics

fixed rateadjustable rateARMmortgage comparison

Use the Interactive Calculator

Skip the manual math — get instant results with our free Fixed vs Adjustable Rate calculator.

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