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Weight Conversion Calculator

⚖️Weight Converter

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What is Weight Conversion Calculator?

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A weight and mass conversion calculator switches between metric (kg, g, mg) and imperial (lbs, oz, stone) and other mass units used globally.

PrimeCalcPro provides professional-grade tools trusted by businesses and academics.

Formula

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f(x)1 kg = 2.20462 lb = 35.274 oz | 1 stone = 14 lb = 6.35029 kg | 1 metric ton = 1000 kg = 2204.62 lb

Variable Legend

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Symbol	Vārds	Vienība	Apraksts
kg	Kilograms	metric	—
lb	Pounds	imperial/US	—
st	Stone	UK/Ireland	—

How to Weight Conversion Calculator

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11 kg = 2.20462 lbs = 35.274 oz
21 lb = 453.592 g = 16 oz
31 stone = 14 lbs = 6.350 kg
41 tonne (metric) = 1,000 kg = 2,204.6 lbs

Worked Examples

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Example 1

Given:75 kg to stone and pounds

Rezultāts:75 / 6.350 = 11.81 stone = 11 stone 11.3 lbs

Real-World Applications

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International weight measurement

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Recipe and cooking conversions

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Medical and health tracking

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Shipping and cargo calculations

Weight Conversion Reference

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Unit	Kilograms	Pounds	Grams
1 gram	0.001	0.00220	1
1 ounce	0.02835	0.0625	28.35
1 pound	0.4536	1	453.6
1 kilogram	1	2.205	1,000
1 stone	6.350	14	6,350

Frequently Asked Questions

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What's heavier: 1 pound or 1 kilogram?

1 kg = 2.20 lb. Kilogram is heavier. Pound is smaller unit.

How do I convert 150 pounds to kilograms?

150 lb ÷ 2.20462 ≈ 68.04 kg.

What's a stone used for?

UK/Ireland: body weight. 14 stone = 196 lb ≈ 89 kg. Less common now; metric preferred.

Regional Guides

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USA▾

Pounds and ounces standard; kilograms in scientific contexts

UK/Ireland▾

Stone and pounds for body weight; kilograms increasingly used

Metric world▾

Kilograms standard everywhere

References

›Weight conversion — NIST

For informational purposes only. This tool does not constitute financial advice. Consult a qualified financial adviser before making investment or financial decisions.

Mathematically verified

Reviewed October 2026

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