How much fat should I eat on 1,500 calories?
About 33 to 58 g of fat a day, which is 20 to 35% of 1,500 calories. Keep saturated fat under about 17 g. A tablespoon of butter is 7.2 g of that, more than 40% of your line in one spoon.
At 1,500 calories, the numbers on food labels are set for a bigger eater. The label’s 20 g of saturated fat is 12% of your day, over the US line of 10%. And if you ate the label’s full 78 g of fat, it would be 47% of your calories, well past the top of the range.
What we’d do: spend your fat on the kinds that do you good. Olive oil, nuts, avocado and fish take up the same grams as butter and cheese, and leave room under your saturated fat line.
Two ways to fill the same band
Here are two sets of foods with about the same fat, from the USDA tables.
| Foods | Fat | Saturated fat |
|---|---|---|
| A tablespoon of olive oil, an ounce of almonds, 3 oz of salmon and an egg | 44 g | 6.5 g |
| A tablespoon of butter, an ounce of cheddar and 3 oz of 73% lean ground beef | 39 g | 20.1 g |
The first set sits in the middle of your band with most of your saturated fat line still free. The second is over the 17 g line with three foods, before breakfast cereal, bread or anything else. The difference is which fat, and the grams barely change.
The numbers
Fat has 9 calories a gram. The bottom of the band is 1,500 × 0.20 ÷ 9, which is 33 g, and the top is 1,500 × 0.35 ÷ 9, which is 58 g. The saturated fat line is 1,500 × 0.10 ÷ 9, about 17 g. The 20 to 35% range is the US Acceptable Macronutrient Distribution Range for adults, and the 10% cap is in the 2025 to 2030 guidelines.
Inside that fat, two kinds are essential, since your body can’t make them. Both are polyunsaturated. Adults up to 50 need about 12 g (women) to 17 g (men) a day of linoleic acid, and 1.1 g (women) to 1.6 g (men) of alpha-linolenic acid. A tablespoon of canola oil has 1.3 g of the second, and an ounce of walnuts has 2.6 g.
These are the US guideline’s lines. The Gyroscope app personalizes yours.
Is 1,500 the right number?
The 2020 to 2025 US guidelines put most adult women’s needs at 1,600 to 2,400 calories a day and men’s at 2,000 to 3,000, so 1,500 is a cut for nearly everyone. tdee.guide works out your own burn and how big a cut it allows, and never sets a target under 1,200 calories a day for women or 1,500 for men without a doctor. If you eat more than 1,500, the general answer has the band at other calorie levels.
Not sure? tdee.guide works out yours from your steps. Food labels use 2,000.
44to78grams of fat a day, 20 to 35% of 2,000 calories
Inside it, saturated fat under 22.2 g. The kind matters more than the total.
The band is wide on purpose. Both of those days sit in it. In a 609-person, 12-month trial, a healthy low-fat and a healthy low-carb diet lost about the same weight: 5.3 kg against 6.0 kg (DIETFITS, Gardner 2018).
The floor: fats your body can't make
- Linoleic acid (omega-6)
- 12 g a day
- Alpha-linolenic acid (omega-3)
- 1.1 g a day
- A tablespoon of corn oil has 8 g of polyunsaturated fat, most of it linoleic acid (7.5 g).
- An ounce of walnuts has 2.5 g of alpha-linolenic acid, and 10.7 g of linoleic acid.
- A tablespoon of ground flaxseed has 1.6 g of alpha-linolenic acid, a tablespoon of canola oil 1.3 g.
Adequate Intakes from the US guidelines' table of nutrient goals. They're a floor, not a target.
Saturated
Monounsaturated
Polyunsaturated
These are the US guideline's lines. The Gyroscope app personalizes yours.
7 sources
- US Department of Agriculture and US Department of Health and Human Services, Dietary Guidelines for Americans, 2020 to 2025, Appendix 1, Table A1-2, p. 133, and Appendix 2, 2020dietaryguidelines.gov
- US Department of Agriculture and US Department of Health and Human Services, Dietary Guidelines for Americans, 2025 to 2030, p. 3, January 2026cdn.realfood.gov
- US Food and Drug Administration, Daily Value on the Nutrition and Supplement Facts Labelsfda.gov
- Gebhardt and Thomas, Nutritive Value of Foods, Home and Garden Bulletin 72, Table 9, USDA Agricultural Research Service, 2002ars.usda.gov
- USDA SR Legacy, Oil, canola (FDC 172336), via NutritionValue.orgnutritionvalue.org
- USDA SR Legacy, Nuts, English walnuts (FDC 170187), via NutritionValue.orgnutritionvalue.org
- USDA SR Legacy, Fish, salmon, Atlantic, farmed, cooked (FDC 175168), via NutritionValue.orgnutritionvalue.org
