Grams to Pounds Calculator — g, kg, oz, lb Converter
Convert grams to pounds (and show the pounds-and-ounces breakdown), or switch the input to kilograms, ounces or pounds to convert in any direction — all using the exact international definition.
Input unit
1 lb 1.64 oz
- 1
Conversion constant
1 lb = 453.59237 g exactly — international avoirdupois definition. - 2
Grams to pounds
500 ÷ 453.59237 = 1.1023
How does this calculator work?
Divide grams by 453.59237 to get pounds; divide by 28.3495 for ounces; divide by 1000 for kilograms. To display as "X lb Y oz", take the integer part of the pound result as lb and multiply the remainder by 16 for oz. Example: 500 g = 1.1023 lb = 1 lb 1.64 oz.
Formula
How this is calculated
The international avoirdupois pound is defined as exactly 453.59237 grams — this is the legal definition used in the United States, United Kingdom, and most English-speaking countries since 1959. From this one constant every other conversion follows: one ounce is one-sixteenth of a pound (28.349523125 g exactly), and one kilogram is 1000 grams by SI definition.
This calculator converts any input weight to a common base in grams and then divides by each unit's factor to produce all the outputs simultaneously. The pounds-and-ounces display splits the decimal pounds result into a whole-pound count plus the fractional remainder expressed as ounces, which is the form used in everyday cooking, postal, and body-weight contexts in the United States and United Kingdom.
All conversions are exact to the precision of a 64-bit floating-point number — the only rounding is in the displayed decimal places. Because the pound is defined in terms of the kilogram (not the other way round), the gram-to-pound direction uses division, not multiplication, to avoid round-trip drift.
Frequently asked questions
Exactly 453.59237 grams. This is the international avoirdupois pound, defined in 1959 by agreement between the US, UK, Canada, Australia, New Zealand, and South Africa.
Divide the number of grams by 28.349523125 (one-sixteenth of the pound definition). For example, 100 g ÷ 28.3495 ≈ 3.527 oz. You can also multiply by 0.035274.
One avoirdupois pound equals 16 avoirdupois ounces. Both are units in the imperial / US customary system for general mass. (Note: a troy ounce, used for precious metals, is 31.1035 g — different from the avoirdupois ounce of 28.3495 g.)
Also known as
TG we-Calculate Editorial Team. (2026). Grams to Pounds Calculator — g, kg, oz, lb Converter [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/g-to-lbs-calculator
TG we-Calculate Editorial Team. "Grams to Pounds Calculator — g, kg, oz, lb Converter." TG we-Calculate. 2026. https://we-calculate.com/calculator/g-to-lbs-calculator.
TG we-Calculate Editorial Team, "Grams to Pounds Calculator — g, kg, oz, lb Converter," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/g-to-lbs-calculator
@misc{wecalculate_g_to_lbs_calculator, title = {Grams to Pounds Calculator — g, kg, oz, lb Converter}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/g-to-lbs-calculator}}, year = {2026}, note = {TG we-Calculate} }
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