Mass vs weight—what’s the difference?

Mass is kilograms; weight is force. For everyday Earth use we convert mass units with standard factors.

Troy ounces for gold?

This converter uses avoirdupois ounces (~28.35 g). Troy oz (~31.1 g) is for precious metals—use a dedicated jeweler’s tool.

Short ton (US) ≠ metric tonne. Pick the unit label that matches your source.

lb mass is common; some contexts use lb-force. For cooking and body weight, use standard mass pounds.

Supported if listed—useful for medication or lab units; always follow medical labeling.

Nothing is uploaded; conversion is local to your browser.

Kilograms, pounds, ounces, grams, and tonnes.

ValueFromTo

Result

2.20462262 lb

Informational only; verify critical results independently.

Enter the numeric mass or weight (e.g. 70 or 0.25).
Pick the unit your number is in: kg, lb, oz, g, stone, tonne, etc.
Pick the unit you need; results update immediately when inputs change.
Toggle between metric and imperial without retyping the underlying SI value.
Use the same tool for cooking (g ↔ oz), luggage (kg ↔ lb), and science (g ↔ mg).
Copy the output or round for scales that only show one decimal.

Mass vs weight—what’s the difference?: Mass is kilograms; weight is force. For everyday Earth use we convert mass units with standard factors.
Troy ounces for gold?: This converter uses avoirdupois ounces (~28.35 g). Troy oz (~31.1 g) is for precious metals—use a dedicated jeweler’s tool.
US ton vs metric tonne?: Short ton (US) ≠ metric tonne. Pick the unit label that matches your source.
Why two types of pounds?: lb mass is common; some contexts use lb-force. For cooking and body weight, use standard mass pounds.
Micrograms or milligrams?: Supported if listed—useful for medication or lab units; always follow medical labeling.
Privacy?: Nothing is uploaded; conversion is local to your browser.

Last updated: 2025-09-14