Gold Bar Sizes & Prices Explained: 100g vs 1kg – Which Is Right for You?
Last updated: October 28, 2025
Choosing between 100g, 250g, 500g, and 1kg bars comes down to two things: cost per gram and flexibility. This guide breaks down how size affects the 1 kg gold bar price, typical premiums, and resale so you can match your purchase to your plan and budget.
How size affects price and premium
Your bar’s total price is the metal value plus a premium. Larger bars usually have lower premiums per gram because minting, packaging, and logistics are spread over more gold. Smaller bars cost more per gram but give you finer control when you buy or sell.
- Typical trend: 1kg ≈ lowest premium per gram → 500g → 250g → 100g ≈ highest premium per gram.
- Format: Minted, sealed bars often carry a higher premium than cast bars of the same weight.
How to check the gold bar price today
Formula: Metal value ≈ spot price per troy ounce × weight in troy ounces. One kilogram equals 32.1507 troy ounces. One 100g bar equals 3.21507 troy ounces.
Illustration only: If spot is $2,400/oz, then a 1kg bar’s metal value is 2,400 × 32.1507 ≈ $77,161.68 before premiums, shipping, and taxes. A 100g bar’s metal value is 2,400 × 3.21507 ≈ $7,716.17 before extras.
Premiums vary by brand, package, demand, and logistics. Larger bars might add a lower percentage premium. Always compare landed cost: spot + premium + shipping/insurance + taxes where applicable.
100g vs 250g vs 500g vs 1kg: side-by-side
| Size | Who it suits | Pros | Trade-offs |
|---|---|---|---|
| 100g (3.215 oz) | First-time buyers, gradual stacking | High liquidity, lower ticket size, easy to resell in parts | Higher premium per gram vs larger bars |
| 250g (8.037 oz) | Balanced approach | Lower premium than 100g, still flexible to sell | Costs more upfront than 100g |
| 500g (16.075 oz) | Growing allocation | Premium per gram drops further, fewer pieces to manage | Larger ticket narrows buyer pool vs 100g/250g |
| 1kg (32.151 oz) | Long-term holders, bulk buyers | Usually the lowest premium per gram | Least flexible to sell in parts; higher single outlay |
Liquidity and resale
All sizes are liquid when the bar is a recognized brand with proper paperwork. Smaller bars usually move faster in retail channels, while 1kg bars often sell through dealers, refiners, or private buyers who handle larger tickets.
- Keep packaging sealed when possible.
- Store invoices, serials, and assay details together.
- Ask your seller about buyback spreads before you buy.
Which size fits your goals
- Prioritizing lowest cost per gram: Choose 1kg, or 500g if you want a smaller ticket.
- Need flexibility for partial sales: Choose 100g or 250g and build a ladder.
- New to bullion: Start with 100g or 250g, learn the process, then scale up.
Buying certified bars from Congo Rare Minerals
Congo Rare Minerals (CRM) supplies high-purity, investment-grade gold bars with documentation and secure logistics. We serve retail and bulk buyers.
- Certified bars: Stated fineness and supporting documents.
- Documented custody: Tracked, insured delivery to you or to your chosen vault, with records you can keep.
- Clear quotes: Transparent premiums, plus guidance on size selection and storage.
FAQs
Is the 1 kg gold bar price always the best value?
Per gram, usually yes. But the best choice depends on your need to sell in smaller pieces later.
What premium should I expect on a 1kg bar?
Premiums move with brand, demand, and logistics. Larger bars tend to have lower percentage premiums than smaller bars.
Are minted bars better than cast bars?
Minted bars come sealed and often carry higher premiums. Cast bars usually cost less per gram. Both are widely accepted when properly documented.
How do I check the gold bar price today?
Look up live spot, multiply by the bar’s troy ounces, then add the premium, shipping/insurance, and any taxes.