Where the data comes from

The one place live data is used

The India gold pages show a gold price, and a price has to come from somewhere. Two feeds are fetched on a schedule by a server-side job, checked, and stored. Pages read the stored reading; no page request ever calls an outside service, so a slow or dead feed can never slow a page down or send a visitor's request to a third party.

The feeds

gold-api.com

• What it measures: International spot price (XAU/USD, per troy ounce)
• Limitations: A spot quote for unallocated gold on the international market. It is not an Indian rate, not a retail rate, and carries no duty, GST or making charge.
• Licence we use it under: Free public endpoint, no key required.
• Official? No — it is not an official or government rate, and no page here describes it as one.
• Last verified by us: 2026-09-22
• Source site: https://gold-api.com/

exchangerate-api.com

• What it measures: USD to INR reference exchange rate
• Limitations: A reference mid-rate, not the rate any bank or money changer will give you. The open endpoint updates about once a day; an authenticated key updates more often.
• Licence we use it under: Free open endpoint, no key required, attribution requested. An account key raises the limits and the refresh rate.
• Official? No — it is not an official or government rate, and no page here describes it as one.
• Last verified by us: 2026-09-22
• Source site: https://www.exchangerate-api.com/

What is done with them

One line of arithmetic, on two fetched numbers:

24K per gram (₹) = spot (USD per troy ounce) × USD/INR ÷ 31.1034768

31.1034768 g is the troy ounce exactly, by definition. Nothing is added, rounded or adjusted in that step, and the other purities are the karat fraction of it and nothing else — 22K is 22/24 of the 24K figure. The methodology section on the gold pages shows the same calculation worked through against whatever reading is currently stored.

How often it refreshes, and what happens when it fails

• The job fetches at most once an hour, and stores a reading only if it passes structure, type, range, timestamp and step-size checks.
• A reading that fails any check is discarded and the previous good one is kept. Bad data never overwrites good data, and no value is ever generated, estimated or quietly carried forward.
• Older than 2 hours, the page stops calling the figure current and labels it a previous reading.
• Older than 72 hours, the page stops showing the figure at all and the calculator switches to a price you enter yourself.

The number this site does not publish

An Indian retail or jeweller rate — what a shop in a particular city actually charges per gram today — is not on this site, anywhere. It is not fetched, not estimated, and not derived from the international figure above.

The gap is not small. Gold landed in India carries import duty, and a counter price carries GST, making charge and the shop's margin on top of that. On the day the gold platform was built, the international figure converted to rupees sat roughly sixteen per cent below quoted Indian 24K retail — about two thousand rupees a gram. Printing the reference figure under a heading that says "gold rate in your city" would be wrong by that much, every day, for every reader.

There is no free, redistributable, machine-readable feed of Indian city retail rates that this site can use. So the calculator asks you for that number instead. That costs you one glance at your jeweller's board, and it makes every figure it returns exactly right rather than approximately wrong.

The third-party price widget

The gold pages also embed a price card published by goldprice.dev, unmodified and with their own attribution intact, under their official widget licence. It is there as an independent second opinion: you can compare somebody else's number with ours without leaving the page.

It is not a data source for this site and cannot become one. The same licence that permits the embed forbids extracting or redistributing the data inside it, so nothing here reads a value out of that card. Our calculator uses the feeds named above and only those. Their terms are the authority on what the embed permits.

Rules, as opposed to data

Several calculators apply an external rule rather than an external number: a university's degree classification algorithm, an examination's marking scheme, a tax rate, a game's rating formula. Those rules live in version-controlled configuration, are named on the calculator that uses them, and change by an edit and a test run — not by a feed.

Rules do change, and they differ between institutions, years and versions. Each page states which rule set it applied so you can check it against your own official documentation. The disclaimer sets out what that does and does not promise.

Corrections

If a figure here looks wrong, or a source has changed what it publishes, tell us — include the page and the number you saw. A source that stops being usable gets removed rather than approximated.