Math

Binary Calculator

Convert between decimal and binary or perform binary arithmetic (add, subtract, multiply).

Inputs

Mode

Operation (arithmetic only)

Value A

Value B (arithmetic only)

Result

Binary

1111110010

How it's calculated

Positional: bₙ…b₁b₀ = Σ bᵢ·2ⁱ.

Does it handle negative numbers?

Decimal→binary requires non-negative; arithmetic can yield negative results shown with a leading '−'.

What about fractions?

Only integers for now — use the scientific calculator for decimal-to-binary fractions.

Math

Hex Converter

Convert freely between hexadecimal, decimal, and binary.

Math

Scientific Notation Converter

Convert a decimal to scientific notation (m × 10ⁿ) and e-notation, or parse a scientific string back.

Math

Percentage Calculator

What is X% of Y, X is what % of Y, and percentage change — all in one place.

Math

Percent Change Calculator

Percentage increase or decrease between two numbers.