Weathering Calculator — Product Quantities

Each weathering technique uses a small amount of product per unit area: quantity = surface area (cm²) × consumption rate. Washes need about 0.008 ml/cm², pigments about 0.003 g/cm², oils about 0.004 ml/cm² and streaking products about 0.005 ml/cm². These are typical hobbyist consumption estimates from bench experience, not manufacturer figures — actual use varies widely with how heavily you weather. As a sense-check, a 35 ml AK Interactive enamel wash jar holds enough for roughly 20–30 average 1:72 models at this rate, which matches the rule of thumb that one bottle weathers dozens of small kits. Adjust the rates in advanced options for heavier or lighter effects.