Glaze Quantity Calculator
Glaze needed for a batch of pots, the dry glaze powder to make it, and the bucket size to mix it in.
At a glance
- What you enter
- Glazed surface of one piece, Number of pieces, How the glaze goes on, Coats, Slurry specific gravity, Dry glaze in the slurry by weight, Reserve left in the bucket, Price of dry glaze per kilogram, Height of the largest piece
- What you get
- Total surface to glaze, Total surface to glaze, Slurry to cover the batch, Weight of the slurry used, Dry glaze in the slurry used, Dry glaze to buy, Slurry to mix, Dry glaze per piece, Dry glaze per square metre, Cost of the dry glaze, Glaze cost per piece, Glaze cost per hundred pieces, Working depth the bucket needs, Bucket size to buy, Water in the slurry
- Formula shown
- Yes, every step, right below your results.
- Cost and privacy
- Free, no account needed, and nothing you type is stored.
See worked examples ↓ Read the FAQ ↓ Share this calculator ↓
Results are estimates for general information only, always verify with a professional or official source before acting on them.
How to use the Glaze Quantity Calculator
- 1 Enter Glazed surface of one piece (sq cm), Every surface that gets glaze: outside, inside a bowl, the base if it is not wiped.
- 2 Enter Number of pieces
- 3 Enter How the glaze goes on, Dipping is the most economical way to cover a repeated form. Spraying loses glaze to the booth, brushing uses the least volume but needs more coats.
- 4 Enter Coats, One for a dipped glaze at working thickness, two or three for a brushed one.
- 5 Enter Slurry specific gravity, A dipping glaze mixed at working thickness is usually about 1.4 to 1.6.
- 6 Enter Dry glaze in the slurry by weight (%), Roughly 30 to 40 percent for a dipping glaze. Check the supplier data for the recipe you use.
- 7 Enter Reserve left in the bucket (%), The glaze that stays in the bucket between batches. Twenty percent is a fair working figure.
- 8 Enter Price of dry glaze per kilogram, Optional. Used for the cost per piece.
- 9 Enter Height of the largest piece (cm), Used for the bucket size. Leave at zero if you do not need it.
- 10 Press Calculate. You get Total surface to glaze, Total surface to glaze, Slurry to cover the batch, Weight of the slurry used, Dry glaze in the slurry used, Dry glaze to buy, Slurry to mix, Dry glaze per piece, Dry glaze per square metre, Cost of the dry glaze, Glaze cost per piece, Glaze cost per hundred pieces, Working depth the bucket needs, Bucket size to buy, Water in the slurry, and every intermediate step stays visible under "How is this calculated?"
- 11 Change one number at a time to see what moves the result, that is usually the most useful thing a calculator can tell you.
Worked examples
Real numbers run through this calculator. Open any example to load it into the form above and change it.
A hundred mugs, dipped
300 square centimetres of glazed surface per mug, one dip, 40 percent solids, a 20 percent bucket reserve.
You enter
- Glazed surface of one piece
- 300 sq cm
- Number of pieces
- 100
- How the glaze goes on
- 1
- Coats
- 1
- Slurry specific gravity
- 1.50
- Dry glaze in the slurry by weight
- 40%
- Reserve left in the bucket
- 20%
- Price of dry glaze per kilogram
- $18.00
- Height of the largest piece
- 14 cm
You get
- Total surface to glaze
- 30,000.00 sq cm
- Total surface to glaze
- 3.00 sq m
- Slurry to cover the batch
- 0.60 L
- Weight of the slurry used
- 900.00 g
- Dry glaze in the slurry used
- 360.00 g
- Dry glaze to buy
- 0.43 kg
- Slurry to mix
- 0.72 L
- Dry glaze per piece
- 3.60 g
- Dry glaze per square metre
- 120.00 g
- Cost of the dry glaze
- $7.78
- Glaze cost per piece
- $0.08
- Glaze cost per hundred pieces
- $7.78
- Working depth the bucket needs
- 18.00 cm
- Bucket size to buy
- 5.00 L
- Water in the slurry
- 540.00 g
3 square metres needs 600 ml of slurry, which is 900 grams of slurry and 360 grams of dry glaze. With the reserve, buy 0.43 kg, and the bucket needs a 19 cm working depth.
Twenty large bowls, poured
A thousand square centimetres per bowl, a 1.45 specific gravity.
You enter
- Glazed surface of one piece
- 1,000 sq cm
- Number of pieces
- 20
- How the glaze goes on
- 2
- Coats
- 1
- Slurry specific gravity
- 1.45
- Dry glaze in the slurry by weight
- 38%
- Reserve left in the bucket
- 25%
- Price of dry glaze per kilogram
- $18.00
- Height of the largest piece
- 12 cm
You get
- Total surface to glaze
- 20,000.00 sq cm
- Total surface to glaze
- 2.00 sq m
- Slurry to cover the batch
- 0.50 L
- Weight of the slurry used
- 725.00 g
- Dry glaze in the slurry used
- 275.50 g
- Dry glaze to buy
- 0.34 kg
- Slurry to mix
- 0.63 L
- Dry glaze per piece
- 13.78 g
- Dry glaze per square metre
- 137.75 g
- Cost of the dry glaze
- $6.20
- Glaze cost per piece
- $0.31
- Glaze cost per hundred pieces
- $30.99
- Working depth the bucket needs
- 16.00 cm
- Bucket size to buy
- 5.00 L
- Water in the slurry
- 449.50 g
2 square metres at 1 litre per 4 needs 500 ml, which is 725 grams of slurry and 276 grams of powder, so about 0.34 kg with the reserve.
A brushed decorative layer
Fifty small tiles with 120 square centimetres each, two coats.
You enter
- Glazed surface of one piece
- 120 sq cm
- Number of pieces
- 50
- How the glaze goes on
- 4
- Coats
- 2
- Slurry specific gravity
- 1.50
- Dry glaze in the slurry by weight
- 42%
- Reserve left in the bucket
- 30%
- Price of dry glaze per kilogram
- $22.00
- Height of the largest piece
- 10 cm
You get
- Total surface to glaze
- 6,000.00 sq cm
- Total surface to glaze
- 0.60 sq m
- Slurry to cover the batch
- 0.40 L
- Weight of the slurry used
- 599.40 g
- Dry glaze in the slurry used
- 251.75 g
- Dry glaze to buy
- 0.33 kg
- Slurry to mix
- 0.52 L
- Dry glaze per piece
- 5.03 g
- Dry glaze per square metre
- 419.58 g
- Cost of the dry glaze
- $7.20
- Glaze cost per piece
- $0.14
- Glaze cost per hundred pieces
- $14.40
- Working depth the bucket needs
- 14.00 cm
- Bucket size to buy
- 5.00 L
- Water in the slurry
- 347.65 g
Brushing uses the most slurry per square metre but needs two coats, so the batch still comes to about 0.4 litres and 0.3 kg of powder.
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