6XC

Weight & Mass Unit Converter

Convert between milligrams, grams, kilograms, tonnes, ounces, pounds and stones — all at once, live.

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Miligram (mg)—
Gram (g)—
Kilogram (kg)—
Tonne (t)—
Ounce (oz)—
Pound (lb)—
Stone (st)—

Every Weight Unit, At Once

Type a value in any unit and see it instantly converted to all the others — metric (mg to tonnes) and imperial (ounces, pounds, stones) side by side.

Frequently Asked Questions

How precise are the conversions?

Exact, using standard international definitions (1 pound = 453.59237 g exactly). Results are rounded for display but computed at full floating-point precision.

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