Muriate of potash Calculator
Scale muriate of potash (mop) (60% K₂O) to your field, see the K₂O delivered, bag count and cost from the recommended 200 kg/ha rate.
MOP (60% K2O) is the cheapest potassium source but carries chloride — fine for most crops, but use sulphate of potash (SOP) instead for tobacco, potato seed and chloride-sensitive horticulture.
Indicative planning figures based on published research averages. Local soil tests, varieties and weather change actual requirements — confirm with your agronomist or extension officer.
Farmers and soil-test labs use the free Muriate of potash Calculator to turn a per-hectare muriate of potash (mop) recommendation into the exact quantity, bag count and cost for their own field in seconds.
About Muriate of potash Calculator
Muriate of potash (60% K₂O) is the cheapest way to supply potassium, the nutrient that builds fruit size, grain fill and stress tolerance. It carries chloride, fine for most crops but not for tobacco or seed potato. This tool sizes MOP to your target K₂O rate and counts the bags.
How to use Muriate of potash Calculator
- 1Enter your field area and unit.
- 2Pick the soil rating or situation that matches your soil test.
- 3Read the muriate of potash (mop) quantity, K₂O delivered, bags and cost, then follow the application note.
Why use Muriate of potash Calculator?
- ✓Scales the recommended muriate of potash (mop) rate to hectares, acres or bigha
- ✓Shows the actual K₂O nutrient delivered, not just product weight
- ✓Estimates cost and bag count so you can budget the purchase
- ✓Free, instant and fully in-browser — works offline in the field
Frequently asked questions
How much muriate of potash (mop) per acre?+
High K need (banana/potato): 200 kg/ha (80.9 kg/acre); Medium K need: 100 kg/ha (40.5 kg/acre); Low K need: 50 kg/ha (20.2 kg/acre). MOP (60% K2O) is the cheapest potassium source but carries chloride — fine for most crops, but use sulphate of potash (SOP) instead for tobacco, potato seed and chloride-sensitive horticulture..
How much K₂O does muriate of potash (mop) contain?+
Muriate of potash (MOP) carries about 60% K₂O, so each 100 kg supplies 60.0 kg of K₂O. The calculator multiplies your applied quantity by this to show the true nutrient delivered.
When and how should I apply it?+
MOP (60% K2O) is the cheapest potassium source but carries chloride — fine for most crops, but use sulphate of potash (SOP) instead for tobacco, potato seed and chloride-sensitive horticulture.
Is the tool free and private?+
Yes — free, no sign-up, and all calculation runs in your browser, so it works offline in the field and your data never leaves the device.
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