Use this calculator to verify a hand calculation, normalize a value before another tool, or make the exact arithmetic convention explicit in a reproducible workflow.

Total

Total length to divide.

The formula below determines the tool output. Larger part: Larger part, whose ratio to the smaller part equals δ. Smaller part: Smaller part, equal to total minus the larger part.^[1]

Calculations use JavaScript number arithmetic. Binary floating-point representation can make some decimal results inexact, and values outside the supported numeric range can overflow or lose precision. Round only for presentation unless the selected rounding tool is itself the intended operation.

Use the inverse operation to check a result when one exists: addition pairs with subtraction, multiplication with division, and powers with roots. For rounding or normalization tools, retain the unmodified value when later calculations still require full precision.

• Golden Ratio Calculator

  Split a total length into two parts whose ratio is the golden ratio φ.

• Linear Blend Calculator

  Blend two numbers linearly with an interpolation factor t, where zero returns a and one returns b.

• Midpoint Calculator

  Compute the midpoint between two values.