Urea Calculator
Calculate exactly how much Urea fertilizer you need for your field. Enter nitrogen requirement and area in any unit (hectare, acre, bigha, guntha, kattha). Get Urea quantity in kg, number of bags, and cost. Works for rice, wheat, maize, sugarcane, cotton, and 20+ more crops.
4 Fertilizer Combinations
DAP + Urea + MOP
Standard recommendation using DAP for phosphorus. Most widely used combination across India.
| Fertilizer | per ha | Total | Cost |
|---|---|---|---|
| DAP | 130.4 kg | 130.4 kg | ₹3,522 |
| Urea | 209.8 kg | 209.8 kg | ₹1,364 |
| MOP | 66.7 kg | 66.7 kg | ₹1,133 |
| Total | 406.9 kg | 406.9 kg | ₹6,019 |
SSP + Urea + MOP
SSP also supplies 11% sulphur and 19% calcium. Ideal for oilseeds, pulses, and sulphur-deficient soils.
| Fertilizer | per ha | Total | Cost |
|---|---|---|---|
| SSP | 375.0 kg | 375.0 kg | ₹2,625 |
| Urea | 260.9 kg | 260.9 kg | ₹1,696 |
| MOP | 66.7 kg | 66.7 kg | ₹1,133 |
| Total | 702.5 kg | 702.5 kg | ₹5,454 |
10-26-26 Complex + Urea
Single complex fertilizer for basal application; reduces number of bags and labour.
| Fertilizer | per ha | Total | Cost |
|---|---|---|---|
| 10-26-26 | 153.8 kg | 153.8 kg | ₹4,308 |
| Urea | 227.4 kg | 227.4 kg | ₹1,478 |
| SSP | 125.0 kg | 125.0 kg | ₹875 |
| Total | 506.3 kg | 506.3 kg | ₹6,661 |
17-17-17 + Top-dress Urea
Balanced complex fertilizer. Good where N, P, K deficiencies are equal.
| Fertilizer | per ha | Total | Cost |
|---|---|---|---|
| 17-17-17 | 235.3 kg | 235.3 kg | ₹5,882 |
| Urea | 173.9 kg | 173.9 kg | ₹1,130 |
| SSP | 125.0 kg | 125.0 kg | ₹875 |
| Total | 534.2 kg | 534.2 kg | ₹7,888 |
Cost Comparison
Urea Dose Reference Table
Urea required per hectare for major crops at medium soil fertility (N requirement ÷ 0.46):
| Crop | N (kg/ha) | Urea (kg/ha) | Application |
|---|---|---|---|
| Rice (Paddy) | 120 | 261 | 3 splits |
| Wheat | 120 | 261 | 3 splits |
| Maize (Hybrid) | 150 | 326 | 3-4 splits |
| Sugarcane | 250 | 543 | 4-5 splits |
| Cotton | 150 | 326 | 3 splits |
| Potato | 180 | 391 | 2-3 splits |
| Tomato | 150 | 326 | 3-4 splits |
| Banana | 200 | 435 | 6+ splits |
Source: ICAR recommendations. Values are for medium fertility soils. Always base on soil test where possible.
Frequently Asked Questions
How much Urea is needed per hectare for rice?
Rice (paddy) requires 120 kg N/ha under medium soil fertility. Urea contains 46% N, so: Urea = 120/0.46 = 261 kg/ha. Applied in 3 splits: 87 kg at transplanting, 65 kg at tillering (21-25 DAT), 109 kg at panicle initiation (45-50 DAT). High-yielding varieties in irrigated conditions may need up to 150 kg N/ha = 326 kg Urea/ha.
What is the formula for Urea calculation?
Urea (kg/ha) = Nitrogen required (kg/ha) ÷ 0.46. Since Urea is 46% N: if you need 60 kg N/ha, you need 60/0.46 = 130.4 kg Urea/ha. Total for your area: Urea (kg) = Urea per ha × Area in hectares. 1 bag of Urea = 45 kg in India (contains 20.7 kg N per bag).
How much Urea per acre for wheat?
Wheat needs 120 kg N/ha = 48.6 kg N/acre (since 1 acre = 0.4047 ha). Urea per acre = 48.6/0.46 = 105.7 kg Urea/acre = about 2.3 bags of 45 kg Urea per acre. Split: 53 kg at sowing + 26 kg at first irrigation + 26 kg at second irrigation.
What is Urea percentage of nitrogen?
Urea (CO(NH₂)₂) contains 46% nitrogen by weight — the highest nitrogen concentration of any solid nitrogen fertilizer. It is also the cheapest per kg of N. 1 kg Urea = 0.46 kg N. Reverse: To supply 1 kg N, you need 1/0.46 = 2.17 kg Urea.
How many kg Urea per bigha?
Depends on your bigha size: 1 Bigha (UP/Raj) = 0.2529 ha → 261×0.2529 = 66 kg Urea per bigha. 1 Bigha (MP/CG) = 0.3307 ha → 261×0.3307 = 86 kg Urea per bigha. 1 Bigha (WB) = 0.1338 ha → 261×0.1338 = 35 kg Urea per bigha. Select your regional bigha in the area unit dropdown above.
Can I apply Urea at any time?
Urea should not be applied just before rain (it washes away) or in hot midday sun (ammonia volatilizes). Best applied early morning or evening when soil is moist. Always incorporate Urea into soil or apply with irrigation water. Top-dressing Urea on flooded rice fields is effective as the flooded soil slows leaching.