Poor posture from prolonged sitting causes back pain, neck strain and long-term spinal issues.
Americans sit an average of 10 hours per day. Every hour of sitting increases health risks.
Use this calculator as a starting point for any health or fitness goal that requires a numeric benchmark. The result is an estimate, not a diagnosis — but it provides a concrete figure to track against over time.
The most common mistake is treating the result as a precise measurement rather than an evidence-based estimate. All body metric calculators have margins of error — use the result as a tracking baseline, not a clinical diagnosis.
A personal trainer uses the calculator with a new client to set a measurable starting point. Re-running the calculation at 4-week intervals provides an objective progress metric that supports motivation and programme adjustments.
Screen at eye level, feet flat on floor, back supported, elbows at 90°, take breaks every 45 min.
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