Recognised as Decimal number

0.00642

Positive
Decimal
5 d.p.
Exact fraction
3 s.f.

0.00642 is a decimal number equal to 321⁄50,000. It lies between 0 and 1, and as a percentage it is 0.642%.

Number properties

Absolute value0.00642

SignPositive

Integer part0

Fractional part0.00642

Decimal places5

Floor0

Ceiling1

Rounded to nearest0

Truncated0

Fractions & ratios

As a fraction321/50,000exact

Ratio321 : 50,000

As a percentage0.642%

Reciprocal155.7632398754≈

Arithmetic

Double0.01284

Half0.00321

Square0.000041

Cube2.64609288 × 10^-7

Square root0.0801249025≈

Cube root0.1858567518≈

Negation-0.00642

Natural logarithm-5.0483371613≈

Logarithm base 10-2.1924649719≈

Representations

Decimal0.00642

Scientific notation6.42 × 10^-3

Exponential6.42e-3

IEEE 754 binary64 (hex)0x3F7A4BDBA0A52696the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0x3BD25EDD32-bit single precision, may lose accuracy

Stored as0.00642the nearest binary64 value to what you typed

Rounding & precision

Significant figures as written3counted from the digits as typed, not from the value

To 0 decimal places0

To 1 decimal place0.0

To 2 decimal places0.01

To 3 decimal places0.006

To 4 decimal places0.0064

To 1 significant figure0.006

To 2 significant figures0.0064

To 3 significant figures0.00642

To 4 significant figures0.006420

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.