Decimal number

1.5

Positive
Decimal
1 d.p.
Exact fraction

1.5 is a decimal number equal to 3⁄2. It lies between 1 and 2, and as a percentage it is 150%.

Number properties

Absolute value1.5

SignPositive

Integer part1

Fractional part0.5

Decimal places1

Floor1

Ceiling2

Rounded to nearest2

Truncated1

Fractions & ratios

As a fraction3/2exact

Ratio3 : 2

As a percentage150%

Reciprocal0.6666666667≈

Arithmetic

Double3

Half0.75

Square2.25

Cube3.375

Square root1.2247448714≈

Cube root1.1447142426≈

Negation-1.5

Natural logarithm0.4054651081≈

Logarithm base 100.1760912591≈

Representations

Decimal1.5

Scientific notation1.5 × 10^0

Exponential1.5e+0

IEEE 754 binary64 (hex)0x3FF8000000000000the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0x3FC0000032-bit single precision, may lose accuracy

Stored as1.5the nearest binary64 value to what you typed

Rounding

To 0 decimal places2

To 1 decimal place1.5

To 2 decimal places1.50

To 3 decimal places1.500

To 4 decimal places1.5000

To 1 significant figure2

To 2 significant figures1.5

To 3 significant figures1.5

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