Energy, Cost & CO₂ Calculator — Rome

Select the devices you charge to see total Energy, Cost, and CO₂ emissions.

Assumptions: Rome grid intensity = 270 g CO₂/kWh; electricity price = €0.33/kWh; full-charge efficiency = 85 %. "8 h" values assume the charger delivers its rated power continuously. Weekly = ×7, Monthly = ×30, Yearly = ×365 of the daily (8 h) use in case 4 h split x 2 each values.

Select	Device	Battery (Wh)	Charger Power (W)	Full charge (kWh)	Cost (€)	CO₂ (g)	8 h Energy (kWh)	8 h Cost (€)	8 h CO₂ (g)	Weekly Cost (€)	Weekly CO₂ (g)	Monthly Cost (€)	Monthly CO₂ (g)	Yearly Cost (€)	Yearly CO₂ (kg)
	iPhone 15 Pro	12.7	20	0.0149	0.0049	4.03	0.160	0.0528	43.2	0.37	302.4	1.58	1296	19.27	15.77
	Apple Watch	1.17	5	0.0014	0.00045	0.37	0.040	0.0132	10.8	0.09	75.6	0.40	324	4.82	3.94
	Samsung Fold	17.33	25	0.0204	0.0067	5.50	0.200	0.0660	54.0	0.46	378	1.98	1620	24.09	19.71
	INIU 27000 mAh Power Bank	99.9	140	0.1175	0.0388	31.73	1.120	0.3696	302.4	2.59	2116.8	11.09	9072	135.90	110.38
	INIU 20000 mAh Power Bank	74	100	0.0871	0.0287	23.51	0.800	0.2640	216.0	1.85	1512	8.00	6480	98.35	79.10
	LapTop 17″	97	130	0.1141	0.0377	30.81	1.040	0.3432	280.8	2.40	1965.6	10.30	8424	126.27	101.49
	Laptop 60watt	71	65	0.0835	0.0276	22.55	0.520	0.1716	140.4	1.20	982.8	5.15	4212	63.63	51.24
	True Wireless Earbuds (Case)	5	5	0.0059	0.0019	1.59	0.040	0.0132	10.8	0.09	75.6	0.40	324	4.82	3.94
	Wireless Over-ear Headphones	7.4	10	0.0087	0.0029	2.35	0.080	0.0264	21.6	0.18	151.2	0.79	648	9.63	7.88
	Bluetooth Speaker	10	10	0.0118	0.0039	3.18	0.080	0.0264	21.6	0.18	151.2	0.79	648	9.63	7.88
	Wireless Mouse	2.5	2	0.0029	0.0010	0.79	0.016	0.0053	4.32	0.04	30.24	0.16	129.6	1.93	1.58
	Wireless Keyboard	1.5	2	0.0018	0.0006	0.48	0.016	0.0053	4.32	0.04	30.24	0.16	129.6	1.93	1.58
	Samsung Galaxy S24 Ultra	17.3	45	0.0204	0.0067	5.50	0.360	0.1188	97.2	0.83	680.4	3.56	2916	44.31	36.24
	Samsung Galaxy Z Fold5	17.3	25	0.0204	0.0067	5.50	0.200	0.0660	54.0	0.46	378	1.98	1620	24.09	19.71
	Google Pixel 8 Pro	17.6	30	0.0207	0.0068	5.59	0.240	0.0792	64.8	0.55	453.6	2.38	1944	28.58	23.38
	Redmi Note 13 Pro+	19.0	120	0.0224	0.0074	6.05	0.960	0.3168	259.2	2.22	1814.4	9.52	7776	115.90	94.33
Total (selected)				0.0000	0.0000	0.00	0.000	0.000	0.0	0.00	0.0	0.00	0.0	0.00	0.00