How Many Tomatoes Make a Quart of Sauce?
Published: October 23, 2026 · 8 min read
Five pounds of fresh tomatoes make one quart of thin sauce. Six and a half pounds make one quart of thick sauce. Those are the National Center for Home Food Preservation figures for its standard tomato sauce procedure, and the 1.5-pound gap between them is water you boiled off, nothing else.
A quart jar holds about 2 pounds of finished sauce, roughly 4 cups. Thin sauce therefore keeps 40 percent of the weight you started with, and thick sauce a little under a third. Everything else leaves through the top of the pot.
The ratio holds across varieties, so it is safe to plan a garden around. What moves the number is where you stop the simmer. If you are resizing a tested recipe rather than writing one, the Canning Recipe Scaler multiplies the batch, keeps the acid proportional, and adds the altitude correction.
The USDA Numbers, and Why There Are Two of Them
Every state extension office quotes the same table, and it gives the yield both by canner load and by jar:
| Sauce style | Volume reduction | Per quart | 7-quart load | 9-pint load | From a 53-lb bushel |
|---|---|---|---|---|---|
| Thin | About one-third | 5 lb | 35 lb | 21 lb | 10–12 quarts |
| Thick | About one-half | 6½ lb | 46 lb | 28 lb | 7–9 quarts |
Both rows come from the same recipe; the pot simply keeps going. Cross the one-third line and each extra quart costs another 1.5 pounds of fruit plus 40 minutes at the stove.
The tested procedure fixes the yield, not the variety
NCHFP writes its yields against reduction, so the numbers apply to whatever tomato you bring in. Skins and seeds leave before the reduction, which is why the 5 pounds means fruit going into the mill rather than fruit on the vine. Weigh the harvest at the door and add 10 percent for cores, splits, and culls.
Counting Tomatoes Instead of Weighing Them
Nobody cans by the piece with a scale on the counter. At the farm stand the question is different, and USDA FoodData Central gives an anchor: a medium tomato weighs 123 grams, a shade over 4 ounces, so about 3.7 make a pound.
| Fruit | Typical weight | Per pound | For 1 quart thin | For 1 quart thick |
|---|---|---|---|---|
| Medium slicer, 3 in | 4.3 oz | 3.7 | 18 | 24 |
| Large beefsteak | 12–16 oz | 0.8–1 | 4–6 | 6–8 |
| Roma / San Marzano | 2–3 oz | 5–8 | 25–40 | 33–52 |
| Cherry or grape | 0.5 oz | 32 | 160 | 210 |
Memorize the medium slicer row. Five pounds is 18 tomatoes, six and a half is 24, and a beefsteak shifts the count by a factor of four without changing the sauce at all. Counts are for buying. Pounds are for canning.
Paste types finish with more sauce in the pot
Roma, San Marzano, Amish Paste, and Opalka carry less water per pound than a beefsteak. Same 5 pounds, less to evaporate, so the pot reaches sauce consistency sooner and lands nearer the top of the range. Two bushels cooked side by side will not give the same jar count.
What Leaves the Pot
A ripe tomato is about 94 percent water. The five-to-one ratio between fruit and sauce is that water going up as steam, plus the skins and seeds the mill carries out.
The 2-pound quart
Ladle sauce into a quart jar, leave the quarter inch of headspace the tested recipe calls for, and you have about 2 pounds of product, 4 cups. That conversion turns the question into arithmetic you can do at the stove: weigh the pot empty, weigh it again at the one-third mark, and you know how many jars are coming.
Where a bushel actually lands
A bushel is 53 pounds by the standard measure, and NCHFP puts it at 10 to 12 quarts of thin sauce or 7 to 9 of thick. The spread inside each range is variety and how far past the mark you cooked. A paste bushel lands near the top, a basket of juicy heirlooms near the bottom.
From One Quart to a Winter's Supply
Work backward from how often you open a jar. The Garden Yield Calculator turns plant counts into pounds if you are growing rather than buying.
| Sauce wanted | Thin, 5 lb per quart | Thick, 6½ lb per quart | Paste plants at 10 lb | Slicer plants at 15 lb |
|---|---|---|---|---|
| 7 quarts, one canner load | 35 lb | 46 lb | 4 | 3 |
| 14 quarts | 70 lb | 91 lb | 7 | 5 |
| 26 quarts, one every two weeks | 130 lb | 169 lb | 13 | 9 |
| 52 quarts, one a week | 260 lb | 338 lb | 26 | 18 |
Plant columns assume 10 pounds per paste plant and 15 per slicer over a full season, the middle of the extension range. A short northern season cuts that by a third.
Scale a tested recipe without breaking it
Enter your batch size, jar size, and elevation. The scaler multiplies the ingredients, holds the acid at the tested rate, and returns headspace, processing time, and canner pressure.
Open the Canning Recipe Scaler →The Grocery Math Nobody Runs
A 53-pound bushel at $1.50 a pound is about $80 and yields 10 quarts of thin sauce, so $8 a quart before lids, propane, and an afternoon. Plain commercial sauce runs $3 to $4 a quart. Buy the fruit and home canning costs more than the store. Grow it from five plants you already watered and the marginal cost is lids and fuel, which is where the comparison flips hard.
The savings live in the garden, not in the jar. Paid for at the farm stand, you are buying control over salt, seeds, and how long it simmers.
What Changes the Ratio in Your Kitchen
Ripeness moves the water
Tomatoes picked after three days of rain need noticeably longer at the stove than the same weight picked in a dry week. That is the most common reason a batch comes up short of the jar count you planned.
Seeding costs you sauce
A food mill pushes seeds and skins out and leaves the pulp. A blender keeps everything and gives a sauce that separates in the jar. If you blend, press the puree through a sieve afterward and expect to lose another 10 to 15 percent of the volume.
Freezing skips the reduction debate
Freezing a quart of sauce uses the same 5-pound rule, but you can freeze at the thin stage and reduce after thawing, which splits a long day into two short ones. Leave an inch of headspace in the bag or the corners split.
Where the Yield Stops Mattering
Yield is a shopping question. These numbers are not, and they do not change with batch size:
- Acid, per jar: 2 tablespoons bottled lemon juice or ½ teaspoon citric acid per quart; 1 tablespoon or ¼ teaspoon per pint. Put it in the empty jar before the sauce. Required even under pressure.
- Headspace: ¼ inch for standard tomato sauce. The ½ inch in pizza sauce and juice recipes belongs to a different tested procedure.
- Processing: boiling water, 35 minutes for pints and 40 for quarts at 0 to 1,000 ft, plus 5 minutes per 3,000 ft of elevation. Pressure option: 20 minutes at 6 lb dial, 5 lb weighted.
- Salt: 1 teaspoon per quart if you want it. Flavor only, no effect on safety.
- No starch: flour and cornstarch are not approved thickeners for home canning. Reduce further instead.
Doubling is the practical ceiling
Scaling a water-bath tomato recipe past 2× without a verified source recipe is where home canners get into trouble. Acid scales with the tomatoes, but so does the water you have to drive off, and a pot that reduced 35 pounds evenly will not handle 70. Two canner loads beat one heroic batch, and the scaler holds the acid at the tested rate when you split it. The water bath vs pressure canning comparison covers which method suits your kitchen.
A Bushel, Worked Through
Fifty-three pounds of Romas, a wide 12-quart pot, a food mill, one Saturday.
- Trimmed and milled: 48 lb of pulp after cores and culls
- Reduced by one-third: 9 to 10 quarts of thin sauce
- Reduced by one-half instead: 7 quarts of thick sauce
- Acid: 2 tablespoons bottled lemon juice per quart jar
- Processing: one 7-quart load, 40 minutes at sea level
Nine jars from 53 pounds, or seven if you cook it down hard. The pot sets the pace, not the fruit: a 12-quart pot takes 48 pounds of pulp only because you add it in batches as it collapses. Start with a few cups, keep it boiling, and add the rest a quart at a time.
Frequently Asked Questions
How many tomatoes make a quart of sauce?
About 18 medium tomatoes, or 5 pounds, for a quart of thin sauce. Thick sauce takes 24 medium tomatoes, about 6.5 pounds. Roma and other paste types are smaller, so the count runs 25 to 40 fruits for the same quart, and the pot finishes sooner.
How many pounds of tomatoes for 7 quarts of sauce?
35 pounds for thin sauce and 46 for thick, per the National Center for Home Food Preservation's canner-load figures. A 7-quart load is one run in a standard boiling-water canner, which makes those numbers the practical unit for a canning day.
Is a quart of tomato sauce 2 pounds?
Close to it. A quart jar filled with a quarter inch of headspace holds about 2 pounds of sauce, or 4 cups. That is why 5 pounds of tomatoes produce one quart: thin sauce keeps roughly 40 percent of the starting weight.
How many tomato plants for a year of sauce?
A quart a week is 52 quarts, which takes 260 pounds of tomatoes for thin sauce. At 10 to 15 pounds per plant, that is 18 to 26 plants. Halve it for a quart every two weeks.
Five Pounds a Quart, and Grow Extra
Budget 5 pounds of tomatoes per quart of thin sauce and 6½ for thick, then add 10 percent for the fruit that never reaches the mill. A 53-pound bushel gives 10 to 12 quarts thin or 7 to 9 thick.
The exception is a sauce you plan to cook again. If it is headed for a Sunday pot with meat and wine, stop at thick and pay the extra pound and a half per jar now, because water left in the jar is water you boil off later anyway. Store filled jars cool and dark and check the vegetable storage chart for the temperatures that hold color and texture. For the growing side of the same plan, see how many tomato plants per person.