Sweat Rate and Fluid Replacement
Personal sweat rate and rehydration target from a weigh-in/weigh-out (sweat_loss = (pre-post) x 16 + fluid - urine), with the percent body-weight loss flagged against the 2% performance-degradation line. Sets a drinking plan for the next shift.
Formula and source
sweat_loss = (pre - post) x 16 + fluid - urine; sweat_rate = sweat_loss / hours; pct_bw_loss = (pre - post) / pre x 100; rehydration = 1.5 x max(0, deficit).
ACSM / NATA position on fluid replacement (weigh-in/weigh-out method), by name.
Audience
This tile is built for field and sar and the adjacent professions in the Field, Backcountry, and SAR group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.
Related tools
Posture
Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.