Clay Calculator
A Reference Guide for Getting Started
This reference guide was designed to help jump-start the creation process. It provides standard dimensions, weight, wall thickness, and estimated clay amounts needed for various ceramic items. It serves as a helpful starting point when you're trying to figure out what size a project needs to be and how much clay you'll need for said project.
Click on any item
name and the relevant information will appear below.The data is based on typical sizes for porcelain, stoneware, and earthenware, allowing
you to adjust how much clay you need according to your preferred material.
Make sure to consider your clay's shrink rate before building!
KITCHENWARES
Beer Glass 
| dimensions | 3-4 inches (8-10 cm) diameter, 6-8 inches (15-20 cm) height |
| weight | 0.5-1 lbs (225-450 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 1-1.5 lbs (450-680 g) stoneware: 1.5-2 lbs (680-900 g) earthenware: 2-2.5 lbs (900-1150 g) |
Butter Dish 
| dimensions | 6 to 7 inches (15-18 cm) length 3 to 4 inches (7.5-10 cm) width 2 to 3 inches (5-7.5 cm) height |
| weight | 1-2 lbs (450-900 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 2-2.5 lbs (900-1150 g) stoneware: 2.5-3 lbs (1150-1350 g) earthenware: 3-3.5 lbs (1350-1600 g) |
Cereal/Soup Bowl 
| dimensions | 5-7 inches (12-18 cm) diameter, 2.5-4 inches (6-10 cm) height |
| weight | 0.75-1.5 lbs (340-680 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 1.5-2 lbs (680-900 g) stoneware: 2-2.5 lbs (900-1150 g) earthenware: 2.5-3 lbs (1150-1360 g) |
Chemex Coffeemaker [6 Cup] 
| dimensions | 5-6 inches (12-15 cm) diameter, 8.5-9.5 inches (21-24 cm) height |
| weight | 1.5-2.5 lbs (680-1130 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 2.5-3 lbs (1130-1360 g) stoneware: 3-4 lbs (1360-1800 g) earthenware: 4-5 lbs (1800-2250 g) |
Coaster 
| dimensions | 3.5-4 inches (9-10 cm) diameter, 0.25-0.5 inches (0.6-1.3 cm) height |
| weight | 0.1-0.15 lbs (45-70 g) |
| wall thickness | 1/8 inch (3 mm) |
| clay needed | porcelain: 0.2-0.3 lbs (90-140 g) stoneware: 0.25-0.35 lbs (115-160 g) earthenware: 0.3-0.4 lbs (140-180 g) |
Coffee Mug 
| dimensions | 3-4 inches (8-10 cm) diameter, 3.5-4.5 inches (9-11.5 cm) height |
| weight | 0.75-1.25 lbs (340-570 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 1.5-2 lbs (680-900 g) stoneware: 2-2.5 lbs (900-1150 g) earthenware: 2.5-3 lbs (1150-1360 g) |
Dessert Plate 
| dimensions | 6-8 inches (15-20 cm) diameter, 0.5-1 inch (1.5-2.5 cm) height |
| weight | 0.5-1 lbs (225-450 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 1-1.5 lbs (450-680 g) stoneware: 1.5-2 lbs (680-900 g) earthenware: 2-2.5 lbs (900-1150 g) |
Dinner Plate
| dimensions | 8-10 inches (20-25 cm) diameter, 0.75-1 inch (2-2.5 cm) height |
| weight | 1-2 lbs (450-900 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 2-3 lbs (900-1360 g) stoneware: 2.5-3 lbs (1150-1360 g) earthenware: 3-3.5 lbs (1360-1600 g) |
Espresso Cup 
| dimensions | 2.5-3 inches (6-8 cm) diameter, 2-2.5 inches (5-6 cm) height |
| weight | 0.25-0.4 lbs (110-180 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 0.5-0.75 lbs (225-340 g) stoneware: 0.75-1 lb (340-450 g) earthenware: 1-1.25 lbs (450-570 g) |
French Butter Dish 
| dimensions | 4-6 inches (10-15 cm) diameter, 2-3 inches (5-7.5 cm) height (base) 5-7 inches (12-18 cm) diameter (lid) |
| weight | 1-2 lbs (450-900 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 2-2.5 lbs (900-1150 g) stoneware: 2.5-3 lbs (1150-1350 g) earthenware: 3-3.5 lbs (1350-1600 g) |
Pitcher 
| dimensions | 5-7 inches (12-18 cm) diameter, 6-8 inches (15-20 cm) height |
| weight | 1-2 lbs (450-900 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 2-3 lbs (900-1360 g) stoneware: 3-4 lbs (1360-1800 g) earthenware: 4-5 lbs (1800-2250 g) |
Salad Plate
| dimensions | 6-8 inches (15-20 cm) diameter, 0.5-1 inch (1.5-2.5 cm) height |
| weight | 0.75-1.5 lbs (340-680 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 1.5-2 lbs (680-900 g) stoneware: 2-2.5 lbs (900-1150 g) earthenware: 2.5-3 lbs (1150-1360 g) |
Serving Bowl
| dimensions | 8-10 inches (20-25 cm) diameter, 4-6 inches (10-15 cm) height |
| weight | 2-3 lbs (900-1360 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 4-5 lbs (1800-2250 g) stoneware: 5-6 lbs (2250-2700 g) earthenware: 6-7 lbs (2700-3150 g) |
Tea Cup 
| dimensions | 2.5-3 inches (6-8 cm) diameter, 2.5-3 inches (6-8 cm) height |
| weight | 0.25-0.5 lbs (110-225 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 0.5-0.75 lbs (225-340 g) stoneware: 0.75-1 lb (340-450 g) earthenware: 1-1.25 lbs (450-570 g) |
Tea Pot 
| dimensions | 6-8 inches (15-20 cm) diameter, 5-7 inches (12-18 cm) height |
| weight | 2-3 lbs (900-1360 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 3-4 lbs (1360-1800 g) stoneware: 4-5 lbs (1800-2250 g) earthenware: 5-6 lbs (2250-2700 g) |
Tumbler 
| dimensions | 3-4 inches (8-10 cm) diameter, 4-5 inches (10-13 cm) height |
| weight | 0.5-1 lbs (225-450 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 1-1.5 lbs (450-680 g) stoneware: 1.5-2 lbs (680-900 g) earthenware: 2-2.5 lbs (900-1150 g) |
Whiskey Glass 
| dimensions | 3-3.5 inches (7.5-9 cm) diameter, 3.5-4 inches (9-10 cm) height |
| weight | 0.5-0.75 lbs (225-340 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 0.75-1 lbs (340-450 g) stoneware: 1-1.25 lbs (450-570 g) earthenware: 1.25-1.5 lbs (570-680 g) |
Wine Glass 
| dimensions | 3-4 inches (8-10 cm) diameter, 7-9 inches (18-23 cm) height |
| weight | 0.75-1.5 lbs (340-680 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 1.5-2 lbs (680-900 g) stoneware: 2-2.5 lbs (900-1150 g) earthenware: 2.5-3 lbs (1150-1360 g) |
Yunomi
| dimensions | 3-4 inches (8-10 cm) diameter, 4-5 inches (10-13 cm) height |
| weight | 0.5-1 lbs (225-450 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 1-1.5 lbs (450-680 g) stoneware: 1.5-2 lbs (680-900 g) earthenware: 2-2.5 lbs (900-1150 g) |
HOMEWARES
Candlestick Holder 
| dimensions | 0.75-1 inch (2-2.5 cm) inner diameter, 4-6 inches (10-15 cm) height |
| weight | 0.5-1 lbs (225-450 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 1-1.25 lbs (450-570 g) stoneware: 1.25-1.5 lbs (570-680 g) earthenware: 1.5-2 lbs (680-900 g) |
Incense Holder 
| dimensions | 2.5-4 inches (6-10 cm) diameter, 0.5-1 inch (1.5-2.5 cm) height, 0.125-0.25 inch (3-6 mm) incense hole diameter |
| weight | 0.1-0.25 lbs (45-110 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 0.25-0.4 lbs (110-180 g) stoneware: 0.4-0.5 lbs (180-225 g) earthenware: 0.5-0.6 lbs (225-270 g) |
Lamp Shade 
| dimensions | 8-12 inches (20-30 cm) diameter, 6-10 inches (15-25 cm) height, 1-1.5 inches (2.5-3.8 cm) bulb opening diameter |
| weight | 1-2 lbs (450-900 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 2-3 lbs (900-1350 g) stoneware: 3-3.5 lbs (1350-1575 g) earthenware: 3.5-4 lbs (1575-1800 g) |
Side Table 
| dimensions | 16-20 inches (40-50 cm) diameter, 18-24 inches (45-60 cm) height |
| weight | 10-20 lbs (4.5-9 kg) |
| wall thickness | 1/4-1/2 inch (6-12 mm) |
| clay needed | porcelain: 18-25 lbs (8-11.5 kg) stoneware: 20-28 lbs (9-12.5 kg) earthenware: 25-30 lbs (11.5-13.5 kg) |
Vase 
| dimensions | 4-6 inches (10-15 cm) diameter, 6-12 inches (15-30 cm) height |
| weight | 1-3 lbs (450-1360 g) |
| wall thickness | 1/8-1/4 inch (3-6 mm) |
| clay needed | porcelain: 3-4 lbs (1360-1800 g) stoneware: 4-5 lbs (1800-2250 g) earthenware: 5-6 lbs (2250-2700 g) |