VPD Calculator

Relative Humidity

TemperatureIt is recommended to measure the leaf temperature

Temperature range

VPD Calculator

The calculation of Vapor Pressure Deficit based on the plant temperature and relative air humidity.

C	30%	35%	40%	45%	50%	55%	60%	65%	70%	75%	80%	85%	90%	95%	F
10	0.86	0.80	0.73	0.67	0.61	0.55	0.49	0.43	0.37	0.31	0.24	0.18	0.12	0.06	50
11	0.92	0.85	0.79	0.72	0.65	0.59	0.52	0.46	0.39	0.33	0.26	0.20	0.13	0.07	52
12	0.98	0.91	0.84	0.77	0.70	0.63	0.56	0.49	0.42	0.35	0.28	0.21	0.14	0.07	54
13	1.04	0.97	0.90	0.82	0.75	0.67	0.60	0.52	0.45	0.37	0.30	0.22	0.15	0.07	56
14	1.11	1.04	0.96	0.88	0.80	0.72	0.64	0.56	0.48	0.40	0.32	0.24	0.16	0.08	58
15	1.19	1.10	1.02	0.93	0.85	0.76	0.68	0.59	0.51	0.42	0.34	0.25	0.17	0.08	59
16	1.27	1.18	1.09	1.00	0.91	0.81	0.72	0.63	0.54	0.45	0.36	0.27	0.18	0.09	61
17	1.35	1.25	1.16	1.06	0.96	0.87	0.77	0.68	0.58	0.48	0.39	0.29	0.19	0.10	63
18	1.44	1.34	1.23	1.13	1.03	0.92	0.82	0.72	0.62	0.51	0.41	0.31	0.21	0.10	65
19	1.53	1.42	1.31	1.20	1.09	0.98	0.87	0.77	0.66	0.55	0.44	0.33	0.22	0.11	67
20	1.63	1.51	1.40	1.28	1.16	1.05	0.93	0.81	0.70	0.58	0.47	0.35	0.23	0.12	68
21	1.73	1.61	1.48	1.36	1.24	1.11	0.99	0.87	0.74	0.62	0.49	0.37	0.25	0.12	70
22	1.84	1.71	1.58	1.45	1.31	1.18	1.05	0.92	0.79	0.66	0.53	0.39	0.26	0.13	72
23	1.95	1.82	1.68	1.54	1.40	1.26	1.12	0.98	0.84	0.70	0.56	0.42	0.28	0.14	74
24	2.08	1.93	1.78	1.63	1.48	1.33	1.19	1.04	0.89	0.74	0.59	0.44	0.30	0.15	76
25	2.20	2.05	1.89	1.73	1.57	1.42	1.26	1.10	0.94	0.79	0.63	0.47	0.31	0.16	77
26	2.34	2.17	2.00	1.84	1.67	1.50	1.34	1.17	1.00	0.83	0.67	0.50	0.33	0.17	79
27	2.48	2.30	2.12	1.95	1.77	1.59	1.42	1.24	1.06	0.89	0.71	0.53	0.35	0.18	81
28	2.63	2.44	2.25	2.06	1.88	1.69	1.50	1.31	1.13	0.94	0.75	0.56	0.38	0.19	83
29	2.78	2.59	2.39	2.19	1.99	1.79	1.59	1.39	1.19	0.99	0.80	0.60	0.40	0.20	85
30	2.95	2.74	2.53	2.32	2.11	1.90	1.68	1.47	1.26	1.05	0.84	0.63	0.42	0.21	86
31	3.12	2.90	2.68	2.45	2.23	2.01	1.78	1.56	1.34	1.11	0.89	0.67	0.45	0.22	88
32	3.30	3.07	2.83	2.60	2.36	2.12	1.89	1.65	1.42	1.18	0.94	0.71	0.47	0.24	90
33	3.49	3.24	2.99	2.74	2.50	2.25	2.00	1.75	1.50	1.25	1.00	0.75	0.50	0.25	92
34	3.69	3.43	3.17	2.90	2.64	2.37	2.11	1.85	1.58	1.32	1.06	0.79	0.53	0.26	94
35	3.90	3.62	3.35	3.07	2.79	2.51	2.23	1.95	1.67	1.39	1.12	0.84	0.56	0.28	95

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