Reciprocal Calculator

Your details

Choose how you want to enter your number.
Enter a whole number or decimal (e.g. 4, -2.5, 0.125). Zero has no reciprocal.
How many decimal places to show in the result.
Reciprocal (decimal)Reciprocal is less than 1
0.25
Reciprocal (fraction)1/4
Your input as a fraction4
Verification: x x reciprocal1
Reciprocal (decimal)0.25
Verification (x x 1/x)1

The reciprocal is 0.25 (= 1/4).

  • As a simplified fraction, the reciprocal is 1/4.
  • A number times its reciprocal always equals 1 - that is the definition of the multiplicative inverse.
  • Because the input is greater than 1 in absolute value, its reciprocal is a proper fraction between 0 and 1.

Next stepMultiply your original number by this reciprocal to confirm you get 1.

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