Borax Calculator
Scale borax (10.5% B) to your field, see the B delivered, bag count and cost from the recommended 10 kg/ha rate.
Borax has a narrow safe range — deficiency and toxicity are close together. Broadcast and mix well; never band borax near seed. Cole crops, groundnut, sunflower and pulses respond most.
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 Borax Calculator to turn a per-hectare borax recommendation into the exact quantity, bag count and cost for their own field in seconds.
About Borax Calculator
Boron deficiency causes hollow stem in cauliflower, empty heads in sunflower and 'pops' in groundnut. Borax decahydrate carries 10.5% B and has a narrow margin between too little and toxic, so getting the field rate right matters. This tool scales the 4–10 kg/ha recommendation, shows the boron delivered and the cost.
How to use Borax Calculator
- 1Enter your field area and unit.
- 2Pick the soil rating or situation that matches your soil test.
- 3Read the borax quantity, B delivered, bags and cost, then follow the application note.
Why use Borax Calculator?
- ✓Scales the recommended borax rate to hectares, acres or bigha
- ✓Shows the actual B 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 borax per acre?+
Soil test Low B: 10 kg/ha (4.0 kg/acre); Marginal: 6 kg/ha (2.4 kg/acre); Maintenance: 4 kg/ha (1.6 kg/acre). Borax has a narrow safe range — deficiency and toxicity are close together.
How much B does borax contain?+
Borax carries about 10.5% B, so each 100 kg supplies 10.5 kg of B. The calculator multiplies your applied quantity by this to show the true nutrient delivered.
When and how should I apply it?+
Borax has a narrow safe range — deficiency and toxicity are close together. Broadcast and mix well; never band borax near seed. Cole crops, groundnut, sunflower and pulses respond most.
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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