Decimal number

1.001

Positive
Decimal
3 d.p.
Exact fraction

1.001 is a decimal number equal to 1,001⁄1,000. It lies between 1 and 2, and as a percentage it is 100.1%.

Number properties

Absolute value1.001

SignPositive

Integer part1

Fractional part0.001

Decimal places3

Floor1

Ceiling2

Rounded to nearest1

Truncated1

Fractions & ratios

As a fraction1,001/1,000exact

Ratio1,001 : 1,000

As a percentage100.1%

Reciprocal0.999000999≈

Arithmetic

Double2.002

Half0.5005

Square1.002001

Cube1.003003

Square root1.0004998751≈

Cube root1.0003332223≈

Negation-1.001

Natural logarithm0.0009995003≈

Logarithm base 100.0004340775≈

Representations

Decimal1.001

Scientific notation1.001 × 10^0

Exponential1.001e+0

IEEE 754 binary64 (hex)0x3FF004189374BC6Athe exact 64-bit pattern stored

IEEE 754 binary32 (hex)0x3F8020C532-bit single precision, may lose accuracy

Stored as1.001the nearest binary64 value to what you typed

Rounding

To 0 decimal places1

To 1 decimal place1.0

To 2 decimal places1.00

To 3 decimal places1.001

To 4 decimal places1.0010

To 1 significant figure1

To 2 significant figures1

To 3 significant figures1

Keep nerding

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