Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
Oranges and orange juice have an interesting two-sided relationship with kidney stones. A medium orange has about 18 mg oxalate — still in the safe zone, but higher than most fruits. The upside: oranges provide citrate, which actively helps prevent calcium oxalate crystals from forming in urine. This makes oranges one of the few foods where the anti-stone benefit (citrate) may partially offset the oxalate content. Whole oranges are the better choice: fiber slows sugar absorption and you get the same citrate benefit. If you drink OJ, choose brands without added sugar and limit to one small glass per day.
📊 Nutrition at a Glance
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 1 medium | 140 g | 18 mg | Safe |
| 2 x 1 medium | 280 g | 36 mg | Caution |
| ½ x 1 medium | 70 g | 9 mg | Safe |
🏷️ Tags
🟢 See all Fruits rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Can I eat Oranges with kidney stones?
No red flags here. Just 18 mg per 1 medium — well below the 25 mg danger line. You can keep Oranges in your regular rotation. Data comes from Harvard (2024).
How much oxalate is in Oranges?
18 mg — that's the oxalate in a standard 1 medium of Oranges. For the 100g comparison freaks: 13 mg. Source is Harvard's 2024 food analysis project.
Is Oranges high in oxalates?
Low. 18 mg per 1 medium puts Oranges firmly in the low-oxalate category. Safe for regular eating if you're managing kidney stones.
What are the best low-oxalate alternatives to Oranges?
Plenty of options. Scroll down to Related Foods — every 🟢 green item there is a lower-oxalate alternative to Oranges. Same food group, way less oxalate.
How much sodium does Oranges have?
Sodium's not the issue here. Oranges has 9 mg per 100g — comfortably low. No need to worry about salt pushing extra calcium into your urine with this food.