Gold measurement in India uses a layered system of traditional and metric units that varies by region and trade context. Tola (11.6638 grams) dominates the northern market. Sovereign — called pavan in Kerala and Tamil Nadu — is standardised at 8 grams for trade, though historical references cite 7.98 grams. Bhori (equal to one tola) is the standard in West Bengal's gold trade.
Since BIS mandatory hallmarking came into effect in June 2021, all certified jewellery shows weight in grams with a 6-digit HUID code. But retail pricing, negotiation, and traditional transactions still happen in tola, sovereign, and bhori. Understanding both systems is essential for buyers, jewellers, and auditors.
Regional Gold Units in India
North India uses tola as the primary unit. One tola = 11.6638 grams exactly — this is the value to memorise. The masha (0.972 g) and ratti (0.1215 g) appear in traditional calculations and gem trading.
South India uses sovereign (pavan) = 8 grams. Kerala jewellery shops quote prices per sovereign of 22-karat gold. Tamil Nadu follows the same standard. The aana (0.729 g) is a traditional sub-unit used in older records.
West Bengal uses bhori = 11.6638 grams (same as tola). The chattank (58.32 g) and pav (233.28 g) appear in older Bengal trade documents.
All these units convert cleanly to grams for BIS certification and hallmarking purposes.
BIS Hallmarking and Legal Standards
From September 2021, the Bureau of Indian Standards made HUID-based hallmarking compulsory for all gold jewellery sold in India. The six-digit alphanumeric HUID links each piece to the registered assaying centre. Purity grades: 999 (24K), 916 (22K), 750 (18K), 585 (14K), 375 (9K).
For legal and insurance purposes, always use the gram weight on the hallmark certificate rather than the jeweller's traditional unit quote. Our gold converters use BIS-standard values for all traditional-to-gram conversions.
Gold in Competitive Exams
Gold unit conversions appear in banking quantitative aptitude papers (IBPS, SBI, RBI) and general awareness sections covering commodity markets. MCX (Multi Commodity Exchange) prices gold per 10 grams for domestic futures. COMEX uses troy ounces internationally — 1 troy ounce = 31.1035 grams.
Knowing that 1 kg gold = 85.735 tolas = 125 sovereigns is the kind of conversion that appears in financial awareness questions.