Sweet Potato vs Tomato: Nutrition Comparison
Which is healthier? Compare calories, protein, carbs, and more
Complete side-by-side nutrition comparison per 100g serving | Updated 2026
Which is Healthier?
Tomato is generally healthier
Tomato comes out ahead in this comparison, winning in 3 out of 5 key nutritional categories. It has fewer calories (18 vs 86), less sugar (2.6g vs 4.2g), less sodium (5mg vs 55mg)making it the better choice for most health goals.
Quick Summary
Fewer Calories
Tomato
18 kcal
More Protein
Sweet Potato
1.6g
More Fiber
Sweet Potato
3g
Less Sugar
Tomato
2.6g
Visual Comparison
Side-by-Side Nutrition Table
| Nutrient | Sweet Potato | Tomato | Difference |
|---|---|---|---|
| Calories | 86kcal | 18kcal✓ | +68.0kcal |
| Protein | 1.6g✓ | 0.9g | +0.7g |
| Carbohydrates | 20g | 4g✓ | +16.0g |
| Fat | 0.1g✓ | 0.2g | -0.1g |
| Fiber | 3g✓ | 1.2g | +1.8g |
| Sugar | 4.2g | 2.6g✓ | +1.6g |
| Sodium | 55mg | 5mg✓ | +50.0mg |
Serving Size Comparison
All values above are per 100g. Here's how they compare in common serving sizes:
Sweet Potato
Tomato
Diet Compatibility
Sweet Potato
Tomato
When to Choose Sweet Potato
- ✓Higher in protein (1.6g vs 0.9g)
- ✓More fiber (3g vs 1.2g)
Common Uses
When to Choose Tomato
- ✓Lower in calories (18 vs 86)
- ✓Lower in carbs (4g vs 20g)
- ✓Less sugar (2.6g vs 4.2g)
- ✓Lower sodium (5mg vs 55mg)
Common Uses
Sweet Potato vs Tomato: Nutritional Analysis
Sweet Potato is more calorie-dense at 86 calories per 100g compared to 18 for Tomato, a difference of 68 calories. On the protein front, Sweet Potato delivers more with 1.6g per 100g versus 0.9g, which matters for muscle maintenance, satiety, and overall metabolic health. These differences become meaningful when you consider how each food fits into your daily dietary pattern rather than looking at any single nutrient in isolation.
Macronutrient Breakdown
The macronutrient profiles of Sweet Potato and Tomato tell different nutritional stories. Sweet Potato provides 20g of carbohydrates, 0.1g of fat, and 3g of fiber per 100g, while Tomato contains 4g carbs, 0.2g fat, and 1.2g fiber. The higher fiber content in Sweet Potato supports digestive health, helps regulate blood sugar after meals, and contributes to longer-lasting satiety. Sugar content also differs: Sweet Potato contains 4.2g while Tomato has 2.6g per 100g. Lower sugar options are generally preferable for blood sugar management and dental health.
Key Takeaways
- For weight management: Tomato is the lower-calorie choice at 18 cal/100g, making it more suitable for calorie-controlled diets.
- For muscle building: Sweet Potato provides more protein (1.6g/100g), supporting muscle repair and growth.
- For sustained energy: Sweet Potato offers more fiber (3g/100g), which slows digestion and provides steadier energy release.
- Overall: Neither food is universally "better" than the other. The right choice depends on your specific nutritional goals, meal context, and dietary preferences. Both can play a role in a balanced diet.
Frequently Asked Questions
Which has more calories, Sweet Potato or Tomato?
Sweet Potato has more calories with 86 kcal per 100g, compared to Tomato with 18 kcal. That's a difference of 68 calories per 100g serving.
Is Sweet Potato healthier than Tomato?
Based on our nutritional analysis, Tomato is generally the healthier choice, winning in 3 out of 5 key nutritional categories. Tomato has 18 calories, 0.9g protein, and 1.2g fiber per 100g. However, the best choice depends on your specific dietary goals.
What is the protein difference between Sweet Potato and Tomato?
Sweet Potato has more protein with 1.6g per 100g, compared to Tomato with 0.9g. Sweet Potato provides 0.7g more protein per 100g serving.
Which is better for weight loss, Sweet Potato or Tomato?
For weight loss, Tomato is the better choice with only 18 calories per 100g compared to 86 calories in Sweet Potato. Sweet Potato also offers 3g of fiber per 100g, which helps you feel fuller longer.
Does Sweet Potato or Tomato have fewer carbs?
Tomato has fewer carbs with 4g per 100g, compared to Sweet Potato with 20g. If you're following a low-carb diet, Tomato is the better option with 16.0g fewer carbohydrates.
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About Our Data
All nutrition data in this comparison is sourced from the USDA FoodData Central, the official food composition database maintained by the U.S. Department of Agriculture. Values are based on 100g servings for accurate comparison.
Health Disclaimer: This comparison is for informational purposes only and is not intended as medical or dietary advice. Nutritional needs vary by individual. The best food choice depends on your personal health goals, dietary requirements, and preferences. Consult a healthcare provider or registered dietitian for personalized nutrition guidance.