Recognised as Decimal number

12.7

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

12.7 is a decimal number equal to 127⁄10. It lies between 12 and 13, and as a percentage it is 1,270%.

Number properties

Absolute value12.7

SignPositive

Integer part12

Fractional part0.7

Decimal places1

Floor12

Ceiling13

Rounded to nearest13

Truncated12

Fractions & ratios

As a fraction127/10exact

Ratio127 : 10

As a percentage1,270%

Reciprocal0.0787401575≈

Arithmetic

Double25.4

Half6.35

Square161.29

Cube2,048.383

Square root3.5637059362≈

Cube root2.3331065539≈

Negation-12.7

Natural logarithm2.5416019935≈

Logarithm base 101.103803721≈

Representations

Decimal12.7

Scientific notation1.27 × 10^1

Exponential1.27e+1

IEEE 754 binary64 (hex)0x4029666666666666the exact 64-bit pattern stored

IEEE 754 binary32 (hex)0x414B333332-bit single precision, may lose accuracy

Stored as12.7the 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 places13

To 1 decimal place12.7

To 2 decimal places12.70

To 3 decimal places12.700

To 4 decimal places12.7000

To 1 significant figure1e+1

To 2 significant figures13

To 3 significant figures12.7

To 4 significant figures12.70

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