Convert Pound (troy/apothecary) to Gram
Convert pounds (troy/apothecary) to grams instantly. 1 pound (troy/apothecary) = 373.2417216 gram — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Gram to Pound (troy/apothecary) converter for the reverse conversion.
Units explained
Pound (troy/apothecary)
The troy (apothecary) pound equals 12 troy ounces, about 373.24 grams.
Named for Troyes, France, a major medieval trade-fair town.
Historical pricing of precious metals; now largely superseded by the troy ounce.
Adopted as the English coinage standard under Henry VIII in 1528.
Gram
The gram (g) equals one-thousandth of a kilogram.
From Late Latin 'gramma', a small weight or scruple.
The everyday metric unit for food, medicine, and small objects.
Defined in 1795 as the mass of one cubic centimeter of water at melting point.
Pound (troy/apothecary) to Gram conversion formula
The relationship between pounds (troy/apothecary) and grams:
To convert pounds (troy/apothecary) to grams, multiply the value in pounds (troy/apothecary) by 373.2417216. To reverse, multiply grams by 0.0026792289.
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 (troy/apothecary) converter for the reverse direction.
Step-by-step: convert pounds (troy/apothecary) to grams
- Write down the value in pounds (troy/apothecary) (lb t).
- Multiply that value by the factor 373.2417216.
- The product is the equivalent value in grams (g).
- To reverse, multiply the gram value by 0.0026792289.
Worked examples
Example 1 — Convert 1 lb t to g:
1 × 373.2417216 = 373.2417216 g
Example 2 — Convert 100 lb t to g:
100 × 373.2417216 = 37324.17216 g
Real-world example — Pet and accessory dimensions
A 3-pound (troy/apothecary) dog leash equals a tidy round value in grams. Pet-supply shopping frequently mixes the two units across product specifications.
3 lb t × 373.2417216 = 1119.7251648 g
Real-world example — Fabric and tailoring
One pound (troy/apothecary) 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 t × 373.2417216 = 373.2417216 g
Real-world example — Body height conversion (reverse direction)
You measure 1.75 pounds (troy/apothecary) 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 t × 373.2417216 = 653.1730128 g
Pound (troy/apothecary) to Gram conversion table
Standard reference values for converting pounds (troy/apothecary) to grams:
| Pound (troy/apothecary) [lb t] | Gram [g] |
|---|---|
| 0.01 | 3.732417216 |
| 0.1 | 37.32417216 |
| 1 | 373.2417216 |
| 2 | 746.4834432 |
| 3 | 1119.7251648 |
| 4 | 1492.9668864 |
| 5 | 1866.208608 |
| 10 | 3732.417216 |
| 20 | 7464.834432 |
| 30 | 11197.251648 |
| 40 | 14929.668864 |
| 50 | 18662.08608 |
| 100 | 37324.17216 |
| 500 | 186620.8608 |
| 1000 | 373241.7216 |
Frequently asked questions
How many grams is 1 pound (troy/apothecary)?
How do I convert pounds (troy/apothecary) to grams?
How do I convert grams back to pounds (troy/apothecary)?
How many grams is 100 pounds (troy/apothecary)?
Popular weight unit conversions
Convert Pound (troy/apothecary) to other weight units
Show all Pound (troy/apothecary) conversions
Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 lb t = 373.2417216 g) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.