Kitufe cha kutengeneza kati ya viwango vya nishati vilivyovumika kama Joule (J), kilowatt-hour (kWh), British Thermal Unit (BTU), na Calorie (cal).
Hii hesabu inakupa uwezo wa kutengeneza viwango vyoyote vya nishati kwenye viwango mengine mara moja. Ingiza thamani moja, na zote zingine zitatumaini zinatumika. Ni muhimu katika matumizi ya umeme, moto, na lishe.
| Viwango | Jina Kamili | Uhusiano na Joule (J) |
|---|---|---|
| J | Joule | 1 J = 1 J |
| kJ | Kilojoule | 1 kJ = 1,000 J |
| MJ | Megajoule | 1 MJ = 1,000,000 J |
| Wh | Watt-hour | 1 Wh = 3,600 J |
| kWh | Kilowatt-hour | 1 kWh = 3,600,000 J |
| MWh | Megawatt-hour | 1 MWh = 3.6 × 10⁹ J |
| BTU | British Thermal Unit | 1 BTU ≈ 1,055.06 J |
| cal | Calorie | 1 cal ≈ 4.184 J |
| kcal | Kilocalorie | 1 kcal = 4,184 J |
| Mcal | Megacalorie | 1 Mcal = 4,184,000 J |
Misali 1:
1 kWh = 3,600,000 J
3,600,000 ÷ 4,184 ≈
860 kcal
Misali 2:
30,000 kcal × 4,184 = 125,520,000 J
125,520,000 ÷ 3,600,000 ≈
34.9 kWh
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