21 lb 1 oz to kg | 21 pounds 1 ounce in kilos

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21 lb 1 oz = 9.55 kg
21 lb 1 oz in kilograms
Kilograms9.55 kg
Grams9,553.8 g
Pounds (total)21.06 lb (≈ 21 1/8 lb)
Ounces (total)337.0 oz
Stones and pounds1 st 7.1 lb
Pounds and ounces21 lb 1 oz

Use our calculator to find what is 21 pounds plus 1 ounce in kilos, grams, pounds only and ounces only.

Using this converter you can get answers to questions like:

  • What is 21 pounds, 1 ounce in kilograms?
  • What is 21 pounds, 1 ounce in grams?
  • What is 21 pounds, 1 ounce in ounces?
  • What is 21 pounds, 1 ounce in pounds?

Similar Weight Conversions

Values close to 21 lb 1 oz for quick reference:

Pounds + Ounces Kilograms
20 lb 7 oz 9.27 kg
20 lb 8 oz 9.299 kg
20 lb 9 oz 9.327 kg
20 lb 10 oz 9.355 kg
20 lb 11 oz 9.384 kg
20 lb 12 oz 9.412 kg
20 lb 13 oz 9.44 kg
20 lb 14 oz 9.469 kg
20 lb 15 oz 9.497 kg
21 lb 9.525 kg
21 lb 1 oz 9.554 kg
21 lb 2 oz 9.582 kg
21 lb 3 oz 9.61 kg
21 lb 4 oz 9.639 kg
21 lb 5 oz 9.667 kg
21 lb 6 oz 9.696 kg
21 lb 7 oz 9.724 kg
21 lb 8 oz 9.752 kg
21 lb 9 oz 9.781 kg
21 lb 10 oz 9.809 kg
21 lb 11 oz 9.837 kg

See Also

Frequently Asked Questions

How much is 21 lb 1 oz in kilograms?

It equals 9.554 kg (9553.8 grams).

How do I convert pounds and ounces to kilograms?

Add ounces as a fraction of pounds: 21 + 1/16 = 21.0625 total pounds. Multiply by 0.45359237: 9.554 kg.

Is the conversion exact?

Yes. 1 pound = 0.45359237 kg exactly (1959 International Agreement). 1 pound = 16 ounces exactly. All values on this page use these exact factors.

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.

Conversion factors verified against NIST (National Institute of Standards and Technology), BIPM (International Bureau of Weights and Measures) 1 lb = 0.45359237 kg by international agreement (1959). Last reviewed: March 2026
Tiago Fernandes Reviewed by Tiago Fernandes