Carpet Drying Time Estimator
Estimate carpet drying time based on carpet thickness, moisture saturation, room temperature, relative humidity, and airflow conditions.
Thicker carpets retain more moisture and take longer to dry.
10% = slightly damp, 100% = fully saturated (flooding).
Higher temperatures accelerate evaporation.
Lower humidity speeds up drying significantly.
Airflow is the single biggest factor in drying speed.
Leave blank to skip water volume calculation.
Formula
Drying Time (hours) = 6 × Ccarpet × Mfactor × Tfactor × Hfactor × Afactor
- 6 hours — empirical baseline for medium-pile carpet at 80% saturation, 72°F, 50% RH, moderate airflow.
- Ccarpet — carpet type multiplier (1.0 low-pile → 2.5 thick/wool).
- Mfactor = moisture% / 80 — linear moisture scaling normalized to 80% saturation.
- Tfactor = 1 / (0.5 × 2(T−50)/18) — evaporation rate doubles every 18°F above 50°F (Antoine equation approximation).
- Hfactor = 1 / (1 − RH/100)0.6 — vapor pressure deficit model; drying slows as air approaches saturation.
- Afactor — airflow multiplier (0.35 professional → 2.0 no airflow).
- Water volume = 0.5 × Ccarpet × Area (sq ft) × (moisture% / 100) gallons.