Commodity ratio · live
Coal to Potato Ratio
The coal to potato ratio is 93.93 — Coal at $131.50 per Metric Ton divided by Potato at $1.40 per 100 Kilogram.
Prices as of Aug 24, 2026, 11:20 AM UTC. Change either side of the calculator to price any other pair from 170+ commodities.
Coal to Potato ratio
1.000 T of coal = 93.929 100 Kg of potato
Inverse (POTATO/COAL): 0.01065 — one 100 Kilogram of potato buys that much coal.
Near the top of its 1 year range — historically stretched. (96th percentile of the last 1 year)
Coal
$131.50
per Metric Ton
Potato
€1.40
per 100 Kilogram
Unit basis: USD per Metric Ton ÷ EUR per 100 Kilogram. The ratio reads as 100 Kilograms of potato per Metric Ton of coal. Prices as of Mon, 24 Aug 2026 11:20:40 GMT.
These two commodities are quoted in different currencies (USD and EUR). The figure above is a raw quote ratio and is not FX-adjusted.
1Y average
30.26
median 16.66
1Y low
7.038
Apr 24, 2026
1Y high
108.0
Jun 7, 2026
Normal band
4.139–56.39
mean ± 1 std dev
Deviation from mean
+2.44σ
307 observations
Coal to Potato ratio charts
Pick a range once — it applies to the COAL/POTATO ratio line, the OHLC candles and the Coal / Potato price chart below.
COAL/POTATO ratio line
How many 100 Kg of Potato one T of Coal buys, over 1Y.
COAL/POTATO ratio candles
Open, high, low and close of the COAL/POTATO ratio for each period in the last 1Y.
Coal and Potato prices
Both legs of the ratio on their own axes, so you can see which one moved over 1Y.
How to calculate the coal to potato ratio
Coal to Potato ratio = Coal price per Metric Ton ÷ Potato price per 100 Kilogram
The two legs use different units, so the result is a rate — 100 Kilograms of potato per Metric Ton of coal — rather than a plain count.
Worked example, live prices: $131.50 ÷ $1.40 = 93.93. The inverse is 0.01065.
The flagship commodity ratios
Each of these has its own dedicated page with live pricing, a full year of history and range statistics.
Live prices behind the ratio
| # | Symbol | Name | Rate (USD) |
|---|---|---|---|
| 1 | XAU | Gold | 4640.70 |
| 2 | XAG | Silver | 68.90 |
| 3 | WTIOIL-FUT | Crude Oil WTI Futures | 85.69 |
| 4 | BRENTOIL-FUT | Crude Oil Brent Futures | 92.88 |
| 5 | NG-FUT | Natural Gas Futures | 2.78 |
| 6 | PL | Platinum | 1883.84 |
| 7 | PA | Palladium | 1350.90 |
Frequently asked questions
What is the coal to potato ratio today?
The coal to potato ratio is 93.93 — Coal at $131.50 per Metric Ton divided by Potato at $1.40 per 100 Kilogram, from live mid-market prices.
How do you calculate the coal to potato ratio?
Divide the coal price per Metric Ton by the potato price per 100 Kilogram. If the two units differ, the result is a rate rather than a plain count — read it as 100 Kilograms of potato per Metric Ton of coal.
What is the inverse of the coal to potato ratio?
The inverse, potato to coal, is 0.01065 — how many Metric Tons of coal one 100 Kilogram of potato buys.