Fraction Calculator

Inputs

Results update as you type.

First fraction
Operation
Second fraction
2 3/4 + 1 5/8 = 4 3/82 3/4 + 1 5/8 = 4 3/8First2.75Second1.625Answer4.375myconstructioncalculator.com
Diagram updates as you type.

Results

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Answer
4 3/8
As an improper fraction35/8
As a decimal4.375
If the numbers are inches111.125 mm
Price This optional: add your own prices

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Working
  1. As improper fractions: 2 3/4 = 11/4, 1 5/8 = 13/8
  2. Common denominator = LCM of 4 and 8 = 8: 11/4 = 22/8, 13/8 = 13/8
  3. 22/8 + 13/8 = 35/8
  4. Lowest terms: 35/8 = 4 3/8 = 4.375

Results are estimates for planning and material ordering only. They are not a substitute for structural design or approval by a qualified engineer. Read the full disclaimer.

Fraction Calculator byMy Construction Calculator: free construction calculators with the working shown.