Pantry & Condiments
Convert teaspoons of ketchup to grams
One teaspoon of ketchup weighs about 5.69 g, and half a teaspoon comes to roughly 2.84 g. Enter any amount below to convert it, or use the chart further down as a quick reference while you cook.
1 tsp of ketchup =
5.69 g
- oz
- 0.201
- kg
- 0.0057
- lb
- 0.013
Ketchup: 273 g per US cup · USDA FoodData Central. Sugar and tomato solids make ketchup noticeably denser than water.
Full ketchup chart →Ketchup at a glance
Every number on this page comes from a single figure: 273 grams per US cup (USDA FoodData Central).
- 1 cup
- 273 g
- 1 tablespoon
- 17.1 g
- 1 teaspoon
- 5.69 g
- 1 cup in ounces
- 9.63 oz
- 100 g in cups
- 0.366 cups
- Density
- 1.15 g/ml
teaspoons to grams chart for ketchup
Print it, screenshot it, or bookmark this page — these are the amounts recipes ask for most often.
| Teaspoons (US) | Grams | Ounces (weight) | Pounds |
|---|---|---|---|
| 1/4 tsp | 1.42 g | 0.05 oz | 0.0031 lb |
| 1/2 tsp | 2.84 g | 0.1 oz | 0.0063 lb |
| 3/4 tsp | 4.27 g | 0.15 oz | 0.0094 lb |
| 1 tsp | 5.69 g | 0.201 oz | 0.013 lb |
| 1 1/2 tsp | 8.53 g | 0.301 oz | 0.019 lb |
| 2 tsp | 11.4 g | 0.401 oz | 0.025 lb |
| 3 tsp | 17.1 g | 0.602 oz | 0.038 lb |
| 4 tsp | 22.8 g | 0.802 oz | 0.05 lb |
| 6 tsp | 34.1 g | 1.2 oz | 0.075 lb |
| 8 tsp | 45.5 g | 1.6 oz | 0.1 lb |
How this conversion is calculated
Volume-to-weight conversions are only as good as the density behind them. We treat ketchup as 273 g per US customary cup, which works out to 1.154 g/ml. From there:
- Your teaspoons figure is converted into millilitres or grams using standard unit sizes (tsp = 4.93 ml).
- The density above bridges volume and weight in whichever direction you need.
- The result is rounded the way a cook would round it — to the nearest gram, or to a usable fraction such as 3/8 cups.
Measuring ketchup accurately
Sugar and tomato solids make ketchup noticeably denser than water.
If a recipe matters to you — bread, macarons, anything with a tight hydration or ratio — weigh it. A £10 digital scale removes the single largest source of variation in home baking, and it is faster than washing three measuring cups.
When cups are fine
- Liquids measured in a proper jug, where volume is the honest unit anyway.
- Forgiving savoury cooking: soups, stews, stir-fries, marinades.
- Small amounts of leaveners and spices, as long as you use level spoons.
Frequently asked questions
How many grams are in 1 teaspoon of ketchup?
1 teaspoon of ketchup is 5.69 g. This is based on a density of 273 g per US cup.
How many grams are in 2 teaspoons of ketchup?
2 teaspoons of ketchup is 11.4 g, and 2.84 g for half a teaspoon.
How much is 100 g of ketchup in cups?
100 g of ketchup is about 3/8 cups. Weight is always the more reliable measurement, so use a scale when the recipe gives grams.
Why do other sites give a different number for ketchup?
Sugar and tomato solids make ketchup noticeably denser than water.
Do UK and Australian cups give the same result?
No. A US customary cup is 236.6 ml, a metric cup used in Australia and New Zealand is 250 ml, and an old UK imperial cup is 284 ml. Our default is the US cup, but you can pick metric cups in the converter.