Recognised as Decimal number

321.5

Positive
Decimal
1 d.p.
Exact fraction
4 s.f.

321.5 is a decimal number equal to 643⁄2. It lies between 321 and 322, and as a percentage it is 32,150%.

Number properties

Absolute value321.5

SignPositive

Integer part321

Fractional part0.5

Decimal places1

Floor321

Ceiling322

Rounded to nearest322

Truncated321

Fractions & ratios

As a fraction643/2exact

Ratio643 : 2

As a percentage32,150%

Reciprocal0.0031104199≈

Arithmetic

Double643

Half160.75

Square103,362.25

Cube33,230,963.375

Square root17.930421077≈

Cube root6.8505744807≈

Negation-321.5

Natural logarithm5.7729975437≈

Logarithm base 102.5071809773≈

Representations

Decimal321.5

Scientific notation3.215 × 10^2

Exponential3.215e+2

IEEE 754 binary64 (hex)0x4074180000000000the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0x43A0C00032-bit single precision, may lose accuracy

Stored as321.5the nearest binary64 value to what you typed

Rounding & precision

Significant figures as written4counted from the digits as typed, not from the value

To 0 decimal places322

To 1 decimal place321.5

To 2 decimal places321.50

To 3 decimal places321.500

To 4 decimal places321.5000

To 1 significant figure3e+2

To 2 significant figures3.2e+2

To 3 significant figures322

To 4 significant figures321.5

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