Decimal number

0.5

Positive
Decimal
1 d.p.
Exact fraction

0.5 is a decimal number equal to 1⁄2. It lies between 0 and 1, and as a percentage it is 50%.

Number properties

Absolute value0.5

SignPositive

Integer part0

Fractional part0.5

Decimal places1

Floor0

Ceiling1

Rounded to nearest1

Truncated0

Fractions & ratios

As a fraction1/2exact

Ratio1 : 2

As a percentage50%

Reciprocal2≈

Arithmetic

Double1

Half0.25

Square0.25

Cube0.125

Square root0.7071067812≈

Cube root0.793700526≈

Negation-0.5

Natural logarithm-0.6931471806≈

Logarithm base 10-0.3010299957≈

Representations

Decimal0.5

Scientific notation5 × 10^-1

Exponential5e-1

IEEE 754 binary64 (hex)0x3FE0000000000000the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0x3F00000032-bit single precision, may lose accuracy

Stored as0.5the nearest binary64 value to what you typed

Rounding

To 0 decimal places1

To 1 decimal place0.5

To 2 decimal places0.50

To 3 decimal places0.500

To 4 decimal places0.5000

To 1 significant figure0.5

To 2 significant figures0.5

To 3 significant figures0.5

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As a fraction

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