What is 0.842 as a Fraction?

Learn how to convert 0.842 to a fraction with step-by-step instructions

Quick Answer

0.842 as a fraction is:

421/500

This is the simplest form of the fraction

0.842 Decimal to Fraction Calculator

Convert Any Decimal to a Fraction

Enter a decimal number to see its fraction equivalent

How to Convert 0.842 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 0.842 to a Fraction

Let's apply the method to convert 0.842

1

Count the decimal places in 0.842

0.842
There are 3 digits after the decimal point
2

Multiply by 10 (1,000)

0.842 × 1,000 = 842
Moving the decimal point 3 places right
3

Write as a fraction

842/1,000
Numerator: 842, Denominator: 1,000
4

Simplify the fraction

842/1,000 = 421/500
Divide both numbers by their greatest common factor (2)

Final Result

0.842 = 421/500

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 0.842 often result in fractions with large denominators
DecimalFractionComparison
0.084242.1/500Smaller
0.842421/500Current Value
8.424210/500Larger
84.242100/500Larger
842421000/500Larger

Additional Information

Scientific Notation

0.842 can be written as 421 × 10⁻3 in scientific notation

Percentage

0.842 is equal to 84.200% as a percentage

Common Calculations with 0.842

Quick Reference Guide

Common calculations and conversions with 0.842

Multiplication

  • 0.842 × 10 = 8.42
  • 0.842 × 100 = 84.2
  • 0.842 × 1000 = 842
  • 0.842 × 10000 = 8420
  • 0.842 × 500 = 421

Division

  • 0.842 ÷ 2 = 0.421
  • 0.842 ÷ 5 = 0.1684
  • 0.842 ÷ 10 = 0.0842
  • 0.842 ÷ 1/0.842 = 500

0.842 in Different Number Systems

Decimal

0.842

Scientific Notation

421 × 10⁻3

Percentage

84.200%

Fraction

421/500

Parts Per Million

842000 PPM

Binary

0.1000 0100 0010

Real-World Applications of 0.842

Where You Might Encounter 0.842

Scientific Applications

  • • Microscopic measurements (842000 micrometers)
  • • Chemical concentrations
  • • Statistical probability calculations
  • • Error margins in precise measurements

Engineering

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