QKitBoxWeight unit converter
Marketplace forms ask for weight in different units than your scale shows. Convert between grams, kilograms, pounds and ounces as you type.
Conversions use exact factors: 1 lb = 453.59237 g, 1 oz = 28.349523125 g, 1 kg = 1000 g. Useful when a carrier form wants kilograms and your scale shows pounds — or when a supplier quotes grams and the listing template wants ounces.
How it works
All conversions route through grams as the base unit, so chained conversions never accumulate error. The factors shown are the exact international definitions (the pound is defined as exactly 453.59237 grams since 1959).
Frequently asked questions
Is this for shipping weight or product weight?
Both — it's pure unit math. For billable shipping weight remember dimensional weight may override scale weight; the Dimensional Weight Calculator handles that part.
Length units too?
Not on this page — it keeps one dimension honest. Length conversions are planned.
Written and maintained by Steven Huang · Last reviewed October 29, 2026.