21K School/ Calculators/ Floating Point Calculator

Floating Point Calculator

Perform arithmetic on floating-point numbers and inspect precision and rounding behaviour.

Float Arithmetic

FEATURE

Rounding Modes

METHOD

Error Analysis

OUTPUT

Enter Values

Number A

Operation

Number B

Result

Result—

Detail—

Notes—

Steps

How It Works

Enter two floating-point numbers and choose an operation.

IEEE 754 double precision (64-bit) arithmetic is used.

The floating-point representation error is highlighted.

Example

0.1 + 0.2

JS gives 0.30000000000000004

Expected: 0.3

Error ≈ 5.55×10⁻¹⁷

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