Weight and Mass Unit Converter

Weight and Mass Unit Converter

Convert pounds, kilograms, ounces, grams, and tonnes. Source and target units remain explicit, and results use published unit definitions with useful precision instead of floating-point noise.

Method and assumptions

Figur converts through a base unit of the same physical dimension and then into the target unit. Temperature uses scale offsets; power and energy are never mixed.

• The source and target units describe the same physical dimension.
• Published SI definitions and legal conversions apply without density, altitude, or temperature-compensation factors.
• The display limits significant digits to avoid floating-point noise while the calculation retains more precision internally.

Sources and references

• NIST SP 811: Guide for the Use of the SI

Frequently asked questions