The gold-silver ratio is simply the gold price divided by the silver price — the number of silver ounces needed to buy one ounce of gold. Over the past century it has averaged somewhere around 50–60, but it has swung from below 20 to above 120, and those swings create trading opportunities for investors who pay attention to it.
A high ratio means silver is cheap relative to gold; a low ratio means silver is expensive. Ratio traders swap between the two metals when the ratio reaches extremes, aiming to end up with more total ounces than they started with. In the 2020 pandemic spike the ratio briefly exceeded 120 before silver dramatically outperformed over the following months.
The logic is that the ratio tends to revert toward its long-run average, so buying silver when the ratio is historically high and switching back to gold when it falls can grow your total metal holdings without adding new capital. This is easier said than done — extremes can persist for years, and timing the swap is the hard part.
For UK investors, remember that swapping physical metal triggers dealer spreads and, for silver, VAT — so ratio strategies work best inside tax-efficient wrappers (an ISA or SIPP holding ETCs) or with CGT-free coins where spreads are the only cost. The ratio is a useful context indicator, not a timing guarantee, and it should inform rather than drive your decisions.
You can track the ratio yourself at any time using our live gold and silver prices — simply divide the gold ounce price by the silver ounce price. Watching how the ratio shifts over weeks and months gives you a feel for whether silver is looking cheap or dear relative to gold, which is useful context whatever your investment approach.