Mass and Weight · Unit Converter

Convert Pound to Gram

Convert pounds to grams instantly. 1 pound = 453.59237 gram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Gram to Pound converter for the reverse conversion.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Dr. Ashok Kumar K, Ph.D.
Mass and Weight category 2 min read Published Last reviewed Updated

Units explained

Avoirdupois

Pound

What is a pound?

The pound (lb) is a unit of mass equal to exactly 0.45359237 kilogram.

Origin of the pound

From Latin 'libra pondo' (a pound by weight); the symbol lb comes from 'libra'.

Where it is used

The primary weight unit in the United States and informally in the UK.

When and where it was developed

The international avoirdupois pound was fixed in the 1959 yard-and-pound agreement.

Metric / SI

Gram

What is a gram?

The gram (g) equals one-thousandth of a kilogram.

Origin of the gram

From Late Latin 'gramma', a small weight or scruple.

Where it is used

The everyday metric unit for food, medicine, and small objects.

When and where it was developed

Defined in 1795 as the mass of one cubic centimeter of water at melting point.

Pound to Gram conversion formula

The relationship between pounds and grams:

1 lb = 453.59237 g
1 g = 0.0022046226 lb

To convert pounds to grams, multiply the value in pounds by 453.59237. To reverse, multiply grams by 0.0022046226.

How to use this converter

Type a value into the calculator. The result in grams updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Gram to Pound converter for the reverse direction.

Step-by-step: convert pounds to grams

  1. Write down the value in pounds (lb).
  2. Multiply that value by the factor 453.59237.
  3. The product is the equivalent value in grams (g).
  4. To reverse, multiply the gram value by 0.0022046226.

Worked examples

Example 1 — Convert 1 lb to g:
1 × 453.59237 = 453.59237 g

Example 2 — Convert 100 lb to g:
100 × 453.59237 = 45359.237 g

Real-world example — Body height conversion (reverse direction)

You measure 1.75 pounds tall and need to fill in a gym membership form or medical record that asks for height in grams. This is the most-used everyday length conversion in metric-using countries.

1.75 lb × 453.59237 = 793.7866475 g

Real-world example — Pet and accessory dimensions

A 3-pound dog leash equals a tidy round value in grams. Pet-supply shopping frequently mixes the two units across product specifications.

3 lb × 453.59237 = 1360.77711 g

Real-world example — Fabric and tailoring

One pound of fabric converts to a value in grams commonly used for seam allowances. Garment patterns frequently switch between the two units on a single instruction sheet.

1 lb × 453.59237 = 453.59237 g

Pound to Gram conversion table

Standard reference values for converting pounds to grams:

Pound [lb]Gram [g]
0.014.5359237
0.145.359237
1453.59237
2907.18474
31360.77711
41814.36948
52267.96185
104535.9237
209071.8474
3013607.7711
4018143.6948
5022679.6185
10045359.237
500226796.185
1000453592.37

Frequently asked questions

How many grams is 1 pound?
1 pound equals 453.59237 gram.
How do I convert pounds to grams?
Multiply the value in pounds by 453.59237 to get grams.
How do I convert grams back to pounds?
Multiply the value in grams by 0.0022046226, or use the Gram to Pound converter.
How many grams is 100 pounds?
100 pounds equals 45359.237 grams, because 100 × 453.59237 = 45359.237.

Convert Pound to other weight units

Show all Pound conversions
Metric / SI (18 units)
Pound to Attogram (ag) Pound to Femtogram (fg) Pound to Picogram (pg) Pound to Nanogram (ng) Pound to Microgram (µg) Pound to Milligram (mg) Pound to Centigram (cg) Pound to Decigram (dg) Pound to Gram (g) Pound to Dekagram (dag) Pound to Hectogram (hg) Pound to Kilogram (kg) Pound to Quintal (metric) (q) Pound to Metric Ton (t) Pound to Gigagram (Gg) Pound to Teragram (Tg) Pound to Petagram (Pg) Pound to Exagram (Eg)
Avoirdupois (14 units)
Pound to Grain (gr) Pound to Dram (avoirdupois) (dr) Pound to Ounce (oz) Pound to Clove (clove) Pound to Stone (US) (st) Pound to Stone (UK) (st) Pound to Quarter (US) (qr) Pound to Quarter (UK) (qr) Pound to Hundredweight (US) (cwt) Pound to Hundredweight (UK) (cwt) Pound to Wey (wey) Pound to Kilopound (kip) (kip) Pound to Ton (short, US) (sh tn) Pound to Ton (long, UK) (long tn)
Troy & Apothecary (10 units)
Pound to Point (1/100 carat) (pt) Pound to Carat (metric) (ct) Pound to Scruple (apothecary) (s ap) Pound to Pennyweight (dwt) Pound to Momme (mom) Pound to Mace (mace) Pound to Dram (apothecary/troy) (dr ap) Pound to Troy Ounce (oz t) Pound to Tael (tael) Pound to Pound (troy/apothecary) (lb t)
Indian / South Asian (6 units)
Pound to Ratti (ratti) Pound to Masha (masha) Pound to Tola (tola) Pound to Chittack (Chatank) (chittack) Pound to Seer (Ser) (seer) Pound to Maund (Mann) (maund)
Scientific / Atomic (9 units)
Pound to Electron Mass (rest) (me) Pound to MeV/c2 (MeV/c²) Pound to Muon Mass (mµ) Pound to Atomic Mass Unit (u) Pound to Proton Mass (mp) Pound to Neutron Mass (mn) Pound to Deuteron Mass (md) Pound to Carbon-12 Atom Mass (C-12) Pound to Planck Mass (mP)
Astronomical (4 units)
Pound to Lunar Mass (Moon) (M☾) Pound to Earth's Mass (M⊕) Pound to Jupiter Mass (MJ) Pound to Sun's Mass (M☉)
Biblical / Ancient (14 units)
Pound to Lepton (Biblical Roman) (lepton) Pound to Quadrans (Biblical Roman) (quadrans) Pound to Assarion (Biblical Roman) (assarion) Pound to Gerah (Biblical Hebrew) (gerah) Pound to Drachma (Biblical Greek) (drachma) Pound to Denarius (Biblical Roman) (denarius) Pound to Bekan (Biblical Hebrew) (bekah) Pound to Didrachma (Biblical Greek) (didrachma) Pound to Shekel (Biblical Hebrew) (shekel) Pound to Tetradrachma (Biblical Greek) (tetra) Pound to Mina (Biblical Greek) (mina) Pound to Mina (Biblical Hebrew) (mina) Pound to Talent (Biblical Greek) (talent) Pound to Talent (Biblical Hebrew) (talent)
Force / Engineering (5 units)
Pound to Poundal (pdl) Pound to Ton (assay) (US) (AT) Pound to Ton (assay) (UK) (AT) Pound to Kilogram-force square second/meter (hyl) Pound to Slug (slug)

Sources & references

Conversion factor (1 lb = 453.59237 g) verified against the following authoritative sources:

Results are provided for general reference. Verify critical measurements against an authoritative standard.