Convert Grains (gr) to Pounds (lb)

1 grain equals 0.000142857 pounds.

Formula: lb = gr × 0.000142857

Grain to Pound Converter

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How to Convert Grain to Pound

1 grain = 0.000142857 pounds

Pound = Grain × 0.000142857

Example: 1 gr × 0.000142857 = 0.000142857 lb

Reverse Conversion

To convert pounds back to grains:

  • Remember, 1 pound equals 7000 grains.
  • To convert 0.000142857 lb to gr, multiply 0.000142857 x 7000, resulting in 1 gr.

Common Grain to Pound Conversions

Grain to Pound (Part 1)
Grain Pound Actions
1 grain 0.000142857 pounds
5 grains 0.000714286 pounds
10 grains 0.00142857 pounds
25 grains 0.00357143 pounds
Grain to Pound (Part 2)
Grain Pound Actions
50 grains 0.00714286 pounds
100 grains 0.0142857 pounds
500 grains 114 pounds
1000 grains 0.142857 pounds

Grains to pounds Conversion Table

Reference table with common grains to pounds conversions. All values calculated with high precision.

Grains to Pounds Table
1 to 5000

Grains Pounds Actions
1 gr 0.000142857 lb
2 12 gr 0.000357143 lb
5 gr 0.000714286 lb
10 gr 0.00142857 lb
25 gr 0.00357143 lb
50 gr 0.00714286 lb
100 gr 0.0142857 lb
250 gr 0.0357143 lb
500 gr 114 lb
1000 gr 0.142857 lb
2500 gr 0.357143 lb
5000 gr 0.714286 lb

Grains to Pounds Table
10000 to 1 × 109

Grains Pounds Actions
10000 gr 1.42857 lb
25000 gr 3.57143 lb
50000 gr 7.14286 lb
100000 gr 14.2857 lb
250000 gr 35.7143 lb
500000 gr 71.4286 lb
1000000 gr 142.857 lb
2500000 gr 357.143 lb
5000000 gr 714.286 lb
10000000 gr 1428.57 lb
2.5 × 107 gr 3571.43 lb
5 × 107 gr 7142.86 lb
1 × 108 gr 14285.7 lb
2.5 × 108 gr 35714.3 lb
5 × 108 gr 71428.6 lb
1 × 109 gr 142857 lb

Pounds to Grains Table
0.0001 to 12

Pounds Grains Actions
0.0001 lb 0.7 gr
0.00025 lb 1 34 gr
0.0005 lb 3 12 gr
0.001 lb 7 gr
0.0025 lb 17.5 gr
0.005 lb 35 gr
0.01 lb 70 gr
0.025 lb 175 gr
0.05 lb 350 gr
0.1 lb 700 gr
14 lb 1750 gr
12 lb 3500 gr

Pounds to Grains Table
1 to 100000

Pounds Grains Actions
1 lb 7000 gr
2 12 lb 17500 gr
5 lb 35000 gr
10 lb 70000 gr
25 lb 175000 gr
50 lb 350000 gr
100 lb 700000 gr
250 lb 1750000 gr
500 lb 3500000 gr
1000 lb 7000000 gr
2500 lb 1.75 × 107 gr
5000 lb 3.5 × 107 gr
10000 lb 7 × 107 gr
25000 lb 1.75 × 108 gr
50000 lb 3.5 × 108 gr
100000 lb 7 × 108 gr

Definition of Grain

Definition
The grain (gr) is one of the oldest units of mass, historically based on the weight of a single grain of cereal. It is still used in ballistics and jewelry.

The grain provides very fine mass resolution compared to larger imperial units.
Exact factor
1 gr = 64.79891 mg
Examples
• 7000 gr = 1 lb
• 500 gr ≈ 32.4 g

Definition of Pound

Definition
The pound (lb) is a unit of mass used mainly in the United States and a few other countries. The international avoirdupois pound is defined exactly as 0.45359237 kilograms.

Pounds are widely used for body weight, packaged goods, and engineering applications in imperial and US customary systems.
Exact factor
1 lb = 0.45359237 kg (exact)
Examples
• 150 lb ≈ 68.04 kg
• 200 lb ≈ 90.72 kg

About the Pound

Facts & Uses

  • Primary unit of mass in US customary and imperial systems; defined as exactly 0.45359237 kilograms by the 1959 International Yard and Pound Agreement.
  • Standard for body weight (US healthcare), retail food packaging, postal rates, and freight in the United States and parts of the Commonwealth.
  • Used in sports (boxing/MMA weight classes, weightlifting plates), firearms (bullet weight in grains, where 7000 grains = 1 lb), and cooking (US recipes).
  • Subdivisions: ounce (1 lb = 16 oz), grain (1 lb = 7000 gr); multiples: stone (UK, 14 lb), hundredweight, short ton (2000 lb).

Curiosities

  • The symbol "lb" comes from the Latin libra pondo ("a pound by weight"), the same root as the British currency pound sign £.
  • Historically, dozens of regional pounds existed across Europe (Tower pound, merchant's pound, troy pound); the 1959 Agreement standardized the avoirdupois pound for English-speaking nations.
  • The troy pound (used for precious metals) is different — 1 troy lb = 12 troy oz = 373.2417216 g, lighter than the avoirdupois pound.
  • 1 lb = exactly 453.59237 g — one of the few imperial-to-metric conversions defined to perfect precision.

Sources

Frequently Asked Questions

How many pounds are in one grain?

One grain equals 0.000142857 pounds. To convert, multiply the grain value by 0.000142857. For the reverse, divide the pound value by 0.000142857 (or multiply by 7000).

What is 24 grains in pounds?

24 grains = 0.0034286 pounds. This is one of the most commonly searched conversions for this pair.

How precise is the grain-to-pound conversion?

The factor 0.000142857 is accurate to 6 significant figures, derived from international measurement standards. Our calculator uses full precision internally.

Looking for the reverse? Convert Pound to Grain

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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
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

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.