Convert

Pound to Kilogram

Pound is not always the same local unit. UnitCloud uses international avoirdupois values.

Unit console

Convert units with formula, context and precision

UnitCloud is a local measurement lab for everyday work, engineering, IT, energy, mobility and design. Every conversion shows result, formula, base unit, rounding and the common mistake.

What do you want to convert?

From1 lb

Result0.45359237 kg

Factor1 lb = 0.45359237 kg

Source basisBIPM SI Brochure · NIST Guide to SI Appendix B

Examples

011 lb = 0.45359237 kg

Example value from the reference table. Internal calculation uses stored factors; display output is rounded.

02Common mistake

Pound is not always the same local unit. UnitCloud uses international avoirdupois values.

03Base unit: g

1 lb = 453.59237 g. Then the value is converted through the base unit g into Kilogram.

Table

Pound	Kilogram
1	0.45359237
2	0.90718474
5	2.26796185
10	4.5359237
50	22.6796185

Formula

1 lb = 453.59237 g. Then the value is converted through the base unit g into Kilogram.

Sources

BIPM SI BrochureSI base units, prefixes and official SI context.NIST Guide to SI Appendix BNIST conversion-factor method and non-SI factors.

Related conversions

Kilogram to Poundkg → lbMass Ounce to Gramoz → gMass Gram to Ounceg → ozMass

Search and practice paths

FormulaTableExamplesCommon mistakeEveryday/engineeringExcel/CSVBatch converterPrint view

Factor origin

Factors come from the stored source family and are not derived from rounded display values.

Rounding rule

UnitCloud keeps calculating with stored factors and rounds only the displayed output by selected precision.

When not to use

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.

Citation

Citation note: UnitCloud, conversion with formula, sources current as of May 2026. Mass. Source basis: BIPM SI Brochure · NIST Guide to SI Appendix B.

Common questions

What is the factor for Pound to Kilogram?

1 lb = 0.45359237 kg

Which formula does Pound to Kilogram use?

1 lb = 453.59237 g. Then the value is converted through the base unit g into Kilogram.

When should I verify the result?

Do not use as the sole basis for official, medical, safety-critical or contractual decisions.