Measurement Conversion Chart for Soap & Cosmetic Makers

Weigh it, convert it, make it. This chart covers every conversion soap and cosmetic makers reach for: ounces to grams, grams to ounces, pounds for bulk buys, and the percentages that keep additives in range. Bookmark it, or print the PDF for your workbench.

  • 28.35 gin 1 ounce
  • 0.035 ozin 1 gram
  • 453.6 gin 1 pound (16 oz)
  • 2.205 lbin 1 kilogram

Ounces to Grams Conversion Chart

One ounce by weight equals 28.35 grams. Use the table below for any amount from 1 to 64 ounces, or multiply ounces by 28.35 for anything larger. Values are rounded to the nearest tenth of a gram, which is more precision than most kitchen scales can show.

Ounces to grams, 1 to 64 oz
Ounces (oz) Grams (g) Ounces (oz) Grams (g) Ounces (oz) Grams (g) Ounces (oz) Grams (g)
1 oz 28.3 g 17 oz 481.9 g 33 oz 935.5 g 49 oz 1,389.1 g
2 oz 56.7 g 18 oz 510.3 g 34 oz 963.9 g 50 oz 1,417.5 g
3 oz 85.0 g 19 oz 538.6 g 35 oz 992.2 g 51 oz 1,445.8 g
4 oz 113.4 g 20 oz 567.0 g 36 oz 1,020.6 g 52 oz 1,474.2 g
5 oz 141.7 g 21 oz 595.3 g 37 oz 1,048.9 g 53 oz 1,502.5 g
6 oz 170.1 g 22 oz 623.7 g 38 oz 1,077.3 g 54 oz 1,530.9 g
7 oz 198.4 g 23 oz 652.0 g 39 oz 1,105.6 g 55 oz 1,559.2 g
8 oz 226.8 g 24 oz 680.4 g 40 oz 1,134.0 g 56 oz 1,587.6 g
9 oz 255.1 g 25 oz 708.7 g 41 oz 1,162.3 g 57 oz 1,615.9 g
10 oz 283.5 g 26 oz 737.1 g 42 oz 1,190.7 g 58 oz 1,644.3 g
11 oz 311.8 g 27 oz 765.4 g 43 oz 1,219.0 g 59 oz 1,672.6 g
12 oz 340.2 g 28 oz 793.8 g 44 oz 1,247.4 g 60 oz 1,701.0 g
13 oz 368.5 g 29 oz 822.1 g 45 oz 1,275.7 g 61 oz 1,729.3 g
14 oz 396.9 g 30 oz 850.5 g 46 oz 1,304.1 g 62 oz 1,757.7 g
15 oz 425.2 g 31 oz 878.8 g 47 oz 1,332.4 g 63 oz 1,786.0 g
16 oz 453.6 g 32 oz 907.2 g 48 oz 1,360.8 g 64 oz 1,814.4 g

Grams to Ounces Chart

Working from a recipe written in grams? Divide grams by 28.35 (or multiply by 0.0353) to get ounces. Here are the amounts makers look up most, from a single gram of colorant to a 2.5 kg batch.

Grams to ounces
Grams (g) Ounces (oz) Grams (g) Ounces (oz)
1 g 0.04 oz 125 g 4.41 oz
5 g 0.18 oz 150 g 5.29 oz
10 g 0.35 oz 200 g 7.05 oz
15 g 0.53 oz 250 g 8.82 oz
20 g 0.71 oz 300 g 10.58 oz
25 g 0.88 oz 400 g 14.11 oz
30 g 1.06 oz 500 g 17.64 oz
40 g 1.41 oz 750 g 26.46 oz
50 g 1.76 oz 1,000 g (1 kg) 35.27 oz
60 g 2.12 oz 1,500 g 52.91 oz
75 g 2.65 oz 2,000 g 70.55 oz
100 g 3.53 oz 2,500 g 88.18 oz

Pounds to Ounces & Grams

Bulk buying is where conversions save real money. There are 16 ounces in a pound and about 453.6 grams. Use this table to plan how many batches you will get out of a bag of soap base, a jug of oil, or a case of wax before you order.

Pounds to ounces, grams and kilograms
Pounds (lb) Ounces (oz) Grams (g) Kilograms (kg)
1 lb 16 oz 454 g 0.45 kg
5 lb 80 oz 2,268 g 2.27 kg
7 lb 112 oz 3,175 g 3.18 kg
10 lb 160 oz 4,536 g 4.54 kg
25 lb 400 oz 11,340 g 11.34 kg
50 lb 800 oz 22,680 g 22.68 kg

Shopping by the pound? Browse soap making supplies and stock up on the sizes that fit your batch plan.

Fluid Ounces vs Weight Ounces: Why Soap Makers Weigh Everything

A fluid ounce measures volume. An ounce measures weight. They share a name, and that causes more failed batches than almost any other mix-up.

The two only match for water. Most oils weigh less than water, so a cup of olive oil weighs less than a cup of water. Glycerin weighs more. When a soap recipe calls for 16 oz of oil, it means 16 oz on a scale, not two cups in a measuring jug.

Rule of thumb: weigh every ingredient, including liquids. Lye calculations depend on exact oil weights, and measuring by volume can throw off your superfat enough to make a harsh or soft bar.

Volume to Weight for Common Ingredients

When a recipe only gives volume, use density to convert it to weight: grams = milliliters × density. The table below shows what one fluid ounce of common ingredients actually weighs. Fragrance oils vary from oil to oil, so check the product page or SDS for the specific oil you are using.

Approximate weight of 1 fluid ounce
Ingredient Density (g/ml) 1 fl oz weighs (g) 1 fl oz weighs (oz)
Distilled water 1.00[CONFIRM] 29.6 g 1.04 oz
Olive oil 0.91[CONFIRM] 26.9 g 0.95 oz
Coconut oil (melted) 0.92[CONFIRM] 27.2 g 0.96 oz
Vegetable glycerin 1.26[CONFIRM] 37.3 g 1.31 oz
Fragrance oil (typical; varies by oil) 0.95[CONFIRM] 28.1 g 0.99 oz

Densities are typical values at room temperature. Coconut oil is solid below about 76°F; weigh it solid or melted, the weight is the same.

Converting a Recipe to Percentages

Percentages make recipes portable. A lotion written as 3% fragrance works at 8 oz or 10 lb, and it keeps you inside recommended usage rates. To convert, divide each ingredient's weight by the total batch weight and multiply by 100.

The chart below shows how much additive to weigh for common usage rates at each base size, by weight. Need to work out a full formula? The Percentage Calculator does the math for every ingredient at once.

Additive amount by weight at each usage rate
Base weight 0.5% 1% 2% 3% 4% 5% 6%
2 oz 0.01 oz
0.3 g 		0.02 oz
0.6 g 		0.04 oz
1.1 g 		0.06 oz
1.7 g 		0.08 oz
2.3 g 		0.10 oz
2.8 g 		0.12 oz
3.4 g
4 oz 0.02 oz
0.6 g 		0.04 oz
1.1 g 		0.08 oz
2.3 g 		0.12 oz
3.4 g 		0.16 oz
4.5 g 		0.20 oz
5.7 g 		0.24 oz
6.8 g
8 oz 0.04 oz
1.1 g 		0.08 oz
2.3 g 		0.16 oz
4.5 g 		0.24 oz
6.8 g 		0.32 oz
9.1 g 		0.40 oz
11.3 g 		0.48 oz
13.6 g
1 lb (16 oz) 0.08 oz
2.3 g 		0.16 oz
4.5 g 		0.32 oz
9.1 g 		0.48 oz
13.6 g 		0.64 oz
18.1 g 		0.80 oz
22.7 g 		0.96 oz
27.2 g
2 lb (32 oz) 0.16 oz
4.5 g 		0.32 oz
9.1 g 		0.64 oz
18.1 g 		0.96 oz
27.2 g 		1.28 oz
36.3 g 		1.60 oz
45.4 g 		1.92 oz
54.4 g
3 lb 0.24 oz
6.8 g 		0.48 oz
13.6 g 		0.96 oz
27.2 g 		1.44 oz
40.8 g 		1.92 oz
54.4 g 		2.40 oz
68.0 g 		2.88 oz
81.6 g
5 lb 0.40 oz
11.3 g 		0.80 oz
22.7 g 		1.60 oz
45.4 g 		2.40 oz
68.0 g 		3.20 oz
90.7 g 		4.00 oz
113.4 g 		4.80 oz
136.1 g
7 lb 0.56 oz
15.9 g 		1.12 oz
31.8 g 		2.24 oz
63.5 g 		3.36 oz
95.3 g 		4.48 oz
127.0 g 		5.60 oz
158.8 g 		6.72 oz
190.5 g
10 lb 0.80 oz
22.7 g 		1.60 oz
45.4 g 		3.20 oz
90.7 g 		4.80 oz
136.1 g 		6.40 oz
181.4 g 		8.00 oz
226.8 g 		9.60 oz
272.2 g

Always stay within the maximum usage rate listed for each fragrance oil or additive. Usage rates and IFRA limits are on each product page.

Download the Printable Chart

Keep it on the workbench. Download the printable PDF conversion chart for quick reference while you make.

Download the PDF

More Tools for Makers

Conversion FAQ

How many grams are in an ounce?

One ounce by weight equals 28.35 grams (28.3495 g exactly). To convert, multiply ounces by 28.35. To go the other way, divide grams by 28.35, or multiply by 0.0353.

Is a fluid ounce the same as an ounce by weight?

No. A fluid ounce measures volume (about 29.57 ml) and an ounce measures weight. They only line up for water. Oils are lighter than water and glycerin is heavier, so always weigh your ingredients for soap and cosmetic recipes.

How do I convert a soap recipe from ounces to grams?

Multiply every ingredient weight by 28.35, then round to the nearest gram (or tenth of a gram for small additives). Run the converted recipe back through a lye calculator to confirm your lye and water amounts before you make a batch.

How many ounces are in a 7 lb bag of soap base?

A 7 lb bag of soap base holds 112 ounces, which is about 3,175 grams (3.18 kg).

This chart is a guideline. You are responsible for testing every product and recipe to ensure compatibility and safety. Questions? Call us at 1-800-359-0944.