How Many Vori and Grams in 1 Troy Ounce of Gold?
In international precious metals commerce, gold and silver are strictly weighed in Troy Ounces (oz t) rather than common grocery ounces.
1 Troy Ounce = 31.1034768 Grams = 2.6666 Vori (2 Vori 10 Ana 4 Roti).
Under Bangladesh Jewellers Association (BAJUS) standards, 1 Vori equals exactly 11.664 grams. Mathematically:
31.1034768 Grams ÷ 11.664 Grams = 2.666622 Vori.
Historically in British-Indian coinage standards, 1 Tola was defined as 180 troy grains while 1 Troy Ounce contained 480 troy grains. Exactly 180 ÷ 480 = 3/8 (0.375) Troy Ounce = 1 Vori. Consequently, exactly 8 Vori equals exactly 3 Troy Ounces of pure bullion.
Troy Ounce (oz t) vs Regular Ounce (oz): Essential Differences
Consumers often confuse the culinary avoirdupois ounce with the precious metals troy ounce. Their physical masses diverge significantly:
Weight: 31.103 grams (2.667 Vori). The universal legal measurement for gold, silver, and platinum trading. There are 12 troy ounces in 1 troy pound.
Weight: 28.350 grams (2.430 Vori). Standard postal and culinary metric. There are 16 avoirdupois ounces in 1 standard pound.
Crucial Note: When international spot gold prices are quoted (such as $2,750 per ounce), they refer exclusively to a Troy Ounce (31.103 grams).
Mathematical Formula: Converting Troy Ounces to Vori
To convert any bullion weight in Troy Ounces to Bangladeshi Vori, apply this primary multiplier:
Step-by-step example: For a standard 1 oz t gold minted bar:
- Decimal Vori: 1 × 2.666622 = 2.6667 vori (2 whole Vori).
- Ana Calculation: Fractional 0.6667 × 16 = 10.667 ana (10 whole Ana).
- Roti Calculation: Remaining fractional 0.667 × 6 = 4.00 roti.
Result: 1 Troy Ounce equals exactly 2 Vori 10 Ana 4 Roti.
Formula: Converting Vori to Troy Ounces
To translate local Vori measurements into international Troy Ounces, multiply by 0.375:
Practical Benchmark: How many troy ounces are in 8 Vori of gold?
8 × 0.375 = exactly 3.000 Troy Ounces.
Similarly, a 10 Vori gold bar (116.64 grams) = 10 × 0.375 = 3.75 Troy Ounces.
Quick Reference Troy Ounce to Vori Conversion Table
| Troy Ounces (oz t) | Weight in Grams | Total Vori (Decimal) | Traditional Vori, Ana & Roti |
|---|---|---|---|
| 0.10 oz t | 3.110 g | 0.266 vori | 0v 4a 1.6r |
| 0.25 oz t | 7.776 g | 0.667 vori | 0v 10a 4.0r |
| 0.50 oz t | 15.552 g | 1.333 vori | 1v 5a 2.0r |
| 1.00 oz t (1 oz Bar) | 31.103 g | 2.667 vori | 2v 10a 4.0r |
| 2.00 oz t | 62.207 g | 5.333 vori | 5v 5a 2.0r |
| 3.00 oz t (8 Vori) | 93.310 g | 8.000 vori | 8v 0a 0r |
| 3.75 oz t (10 Vori Bar) | 116.640 g | 10.000 vori | 10v 0a 0r |
| 5.00 oz t | 155.517 g | 13.333 vori | 13v 5a 2.0r |
| 10.00 oz t | 311.035 g | 26.666 vori | 26v 10a 4.0r |
| 32.151 oz t (1 kg Bar) | 1000.000 g | 85.733 vori | 85v 11a 4.5r |
Bringing a 1 Ounce Gold Bar to Bangladesh: Baggage Rules
Under National Board of Revenue (NBR) passenger baggage customs regulations:
1. Legal Import Limit
An incoming traveler can legally bring bullion bars up to 117 grams (approx. 3.76 troy oz or 10.03 vori) subject to customs duty payment. A 1 oz bar (31.103g) is well within this legal ceiling.
2. Duty Calculation Basis
Customs duty is levied per 11.664 grams (1 vori). Since a 1 oz bar represents 2.667 vori, duty is assessed proportionally at airport customs before issuing a formal tax voucher.
3. Refinery Assay Packaging
Preserve tamper-evident assay blister packs from recognized refiners (such as PAMP Suisse, Valcambi, Emirates Gold, or Perth Mint) to guarantee 999.9 purity during valuation.
4. Red Channel Declaration
Passengers must declare the bar at the customs Red Channel and retain the official duty receipt, ensuring seamless resale rights at jeweler showrooms across Bangladesh.
