What is 0.138 as a Fraction?

Learn how to convert 0.138 to a fraction with step-by-step instructions

Quick Answer

0.138 as a fraction is:

69/500

This is the simplest form of the fraction

0.138 Decimal to Fraction Calculator

Convert Any Decimal to a Fraction

Enter a decimal number to see its fraction equivalent

How to Convert 0.138 to a Fraction

General Method: Converting Decimals to Fractions

Follow these steps to convert any decimal to a fraction

Step 1: Count Decimal Places

Count the number of digits after the decimal point

Example: 0.25 has 2 decimal places

Step 2: Multiply by Power of 10

Multiply by 10 raised to the number of decimal places

0.25 × 100 = 25

Step 3: Create Fraction

Use the result as numerator over the multiplier as denominator

25/100

Step 4: Simplify

Reduce the fraction if possible by dividing both numbers by their GCD

25/100 = 1/4

Converting 0.138 to a Fraction

Let's apply the method to convert 0.138

1

Count the decimal places in 0.138

0.138
There are 3 digits after the decimal point
2

Multiply by 10 (1,000)

0.138 × 1,000 = 138
Moving the decimal point 3 places right
3

Write as a fraction

138/1,000
Numerator: 138, Denominator: 1,000
4

Simplify the fraction

138/1,000 = 69/500
Divide both numbers by their greatest common factor (2)

Final Result

0.138 = 69/500

Tips and Notes

  • The denominator will always be a power of 10 for terminating decimals
  • Each decimal place corresponds to multiplying by 10 (e.g., 3 places = 1,000)
  • Very small decimals like 0.138 often result in fractions with large denominators
DecimalFractionComparison
0.01386.9/500Smaller
0.13869/500Current Value
1.38690/500Larger
13.86900/500Larger
13869000/500Larger

Additional Information

Scientific Notation

0.138 can be written as 69 × 10⁻3 in scientific notation

Percentage

0.138 is equal to 13.800% as a percentage

Common Calculations with 0.138

Quick Reference Guide

Common calculations and conversions with 0.138

Multiplication

  • 0.138 × 10 = 1.3800000000000001
  • 0.138 × 100 = 13.8
  • 0.138 × 1000 = 138
  • 0.138 × 10000 = 1380.0000000000002
  • 0.138 × 500 = 69

Division

  • 0.138 ÷ 2 = 0.069
  • 0.138 ÷ 5 = 0.027600000000000003
  • 0.138 ÷ 10 = 0.013800000000000002
  • 0.138 ÷ 1/0.138 = 500

0.138 in Different Number Systems

Decimal

0.138

Scientific Notation

69 × 10⁻3

Percentage

13.800%

Fraction

69/500

Parts Per Million

138000 PPM

Binary

0.0001 0011 1000

Real-World Applications of 0.138

Where You Might Encounter 0.138

Scientific Applications

  • • Microscopic measurements (138000 micrometers)
  • • Chemical concentrations
  • • Statistical probability calculations
  • • Error margins in precise measurements

Engineering

  • • Manufacturing tolerances
  • • Electronic component specifications
  • • Quality control measurements
  • • Precision engineering