Sodium Loss

This table supplements Hydration 101

1 Sodium Loss Table

The table below shows an example of the sodium losses for someone who is 174cm/70inches high and weighs 60Kg/132lbs. You can create a customized version of this table by filling in the form below.

		Heat Acclimated			Heat Non-Acclimated
Sweat Rate (l/hr)	Sweat Rate (mg/cm2/min)	Sweat Concentration (mmol/l)	Sodium Loss (mg/hr)	Sodium Loss (tsp/hr)	Sweat Concentration (mmol/l)	Sodium Loss (mg/hr)	Sodium Loss (tsp/hr)
0.1	0.1	14	31	0	19	44	0
0.2	0.2	16	71	0	22	102	0
0.3	0.29	18	121	0.1	25	173	0.1
0.4	0.39	20	180	0.1	28	257	0.1
0.5	0.49	22	249	0.1	31	355	0.2
0.6	0.59	24	327	0.1	34	466	0.2
0.7	0.69	26	414	0.2	37	590	0.3
0.8	0.78	28	510	0.2	40	728	0.3
0.9	0.88	30	617	0.3	43	879	0.4
1	0.98	32	732	0.3	46	1044	0.4
1.1	1.08	34	857	0.4	49	1222	0.5
1.2	1.17	36	991	0.4	52	1413	0.6
1.3	1.27	38	1134	0.5	55	1617	0.7
1.4	1.37	40	1287	0.6	58	1835	0.8
1.5	1.47	43	1450	0.6	61	2066	0.9
1.6	1.57	45	1621	0.7	64	2311	1
1.7	1.66	47	1803	0.8	66	2569	1.1
1.8	1.76	49	1993	0.9	69	2840	1.2
1.9	1.86	51	2193	0.9	72	3125	1.3
2	1.96	53	2402	1	75	3423	1.5
2.1	2.06	55	2621	1.1	78	3734	1.6
2.2	2.15	57	2849	1.2	81	4059	1.7
2.3	2.25	59	3086	1.3	84	4397	1.9
2.4	2.35	61	3333	1.4	87	4749	2
2.5	2.45	63	3589	1.5	90	5113	2.2

2 Notes

• For conditions where sweating is required to keep cool, temperatures shown are how hot it would have to be for you to sweat the same amount when walking.
  • The 'x% max' is showing what percentage of your maximum sweat evaporation is required to avoid heat build up.
• For conditions that are cool enough that sweating is required, temperatures shown are that have the same heat loss when walking.
  • The 'x Watts' show the estimated heat loss.
• Walking temperatures assume 30% humidity.
• The entries 'Too Hot' indicate that not enough sweat will evaporate to keep your internal temperature stable.
• When the conditions are too hot, the approximate time for your core temperature to rise to a critical point is given as 'Terminal in x'.

3 Input Form

Height	Inches Centimeters
Weight	Kg Pounds