Grain to Pound Converter

Convert between grains and pounds for pharmaceutical, jewelry, and precision weight measurements

Grain (gr)

1 grain = 1/7000 pound

Pound (lb)

1 pound = 7000 grains

Enter a value to see the conversion result

Weight Conversion Reference

Grain	⇔	Pound
1 gr	⇔	0.000142857 lb
10 gr	⇔	0.001428571 lb
100 gr	⇔	0.014285714 lb
1,000 gr	⇔	0.142857143 lb
7,000 gr	⇔	1 lb
70,000 gr	⇔	10 lb

Precision Weight Examples

Pharmaceutical Dosages:
• Aspirin tablet: 5 grains (325 mg)
• Medicine dose: 0.5-15 grains
• Prescription: 1/4 to 10 grains
• Apothecary system: Traditional grains

Jewelry & Precious Metals:
• Diamond: 1-5 grains (0.2-1 carat)
• Gold dust: 1-100 grains
• Pearl: 2-20 grains
• Small gem: 0.5-10 grains

Scientific Measurements:
• Chemical samples: 1-1000 grains
• Powder amounts: 0.1-100 grains
• Research quantities: Precise to 0.01 gr
• Analytical balance: ±0.001 grain accuracy

Weight Units

Grain: 1/7000 pound = 64.79891 mg
Pound: 7000 grains = 453.592 g
Conversion: 1 lb = 7000 gr
System: Imperial/Apothecary units

Measurement Tips

Use analytical balance for grains
Check calibration regularly
Account for environmental factors
Record measurements precisely

Applications

Pharmacy: Drug dosages
Jewelry: Precious metals/gems
Science: Laboratory measurements
History: Apothecary system