1. Milk. Milk is one of the most easiest and cheapest available source of Calcium.
2. Milk Products. If you don’t like milk, like me, then curd, buttermilk, lassi, Cottage Cheese (Paneer), Cheese i.e milk products.
3. Almonds Milk. You can look up recipes on youTube to make Almond milk at home. Please avoid the ones available in Market. They are really high on sugar and old. (God knows for how long they’ve been on the shelves!)
4. Seeds. Chia seeds, sesame seeds are a good source of Calcium, Protein and Healthy Fats. They up your Omega-3’s.
5. Oranges. My favorite source of Calcium. It provides Calcium and Vitamin C to our body.
6. Vegetables. Veggies like Spinach and Broccoli are also sources of Calcium.
7. Fish. Fishes like Sardine, Salmon help up your calcium level. Though not easily available in India, you might find them at big supermarket stores in frozen or canned form.
Along with the above, you need to keep your Vitamin D levels sufficient because it is required for the absorption of Calcium.
There are lot many sources of Calcium available but I have restricted to the ones easily available in my Country India.
I am not a medical professional. This answer is based upon the advice given to me for Calcium sources and my own research.
Hope this helps
Thanks
Images source: Google.