About EmasKuy: Data Sources & Methodology

Where EmasKuy gold prices come from and how we calculate the rupiah price per gram.

Is EmasKuy pricing real-time?

Yes, prices are polled every 30 seconds. There is a small delay versus the spot market due to the nature of public APIs.

Why does IDR/gram differ from jewelry stores?

EmasKuy shows pure spot prices excluding dealer spread, making charges, and taxes. Retail prices are always higher.

Where does historical chart data come from?

Daily fixings from Narodowy Bank Polski (NBP) since 2013. Each day is converted with that same day's ECB rate (via Frankfurter), so the rupiah chart uses historical exchange rates, not today's.

Does the calculator guarantee returns?

No. The calculator is a fixed-assumption simulation — neither a prediction nor a promise of returns.

Is EmasKuy free?

Yes, 100% free. All data comes from open public APIs.

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