Calcium checker: am I getting enough?
Bone loss speeds up around menopause and gives no warning signs. Tell us how often you eat the main calcium-rich foods to get a rough estimate of your daily calcium, compared with the reference intake for your age.
mg a day, roughly
Reference intake for your age: mg a day (US)
Easy top-ups from the list
This counts only the foods listed; bread, vegetables and other foods add a little more. It doesn’t count supplements: if you take one, mention it to your GP or pharmacist, because more calcium isn’t always better.
Keep your bones in the picture
- Calcium and vitamin D on every day’s plan. The Eat tab shows both beside your protein target, so they stay part of how you plan meals.
- Meals for how you eat. A daily meal plan drawn from 122 recipes, across seven diet styles.
- Strength alongside. Bones respond to load as well as food, and the Move tab keeps a two-sessions-a-week strength minimum.
Why calcium matters now
Oestrogen helps keep bone strong. As it falls across the menopause transition, bone is broken down faster than it is rebuilt, and the loss is quickest in the years around the final period. It causes no symptoms: most women find out about it only through a scan or a fracture.
Calcium is the main mineral in bone, and when your diet falls short your body can draw on the calcium stored there. Vitamin D helps you absorb it; the US reference intake for vitamin D at this age is 600 IU (15 µg) a day. Food matters, but so does load: strength and impact exercise is the other half of protecting bone. See strength training in perimenopause, and our protein calculator for the muscle side.
Where the numbers come from
Each food’s calcium is taken from the US Department of Agriculture’s FoodData Central database and scaled to the portion shown. Plant milks and tofu vary most: calcium-fortified plant milks usually carry about 120 mg per 100 ml, unfortified ones very little, and tofu set with calcium sulphate can have three times as much as some other firm tofu. The label is the best guide.
Frequently asked questions
How much calcium do women need in perimenopause?
The US reference intake (the Institute of Medicine’s recommended dietary allowance) is 1,000 mg a day for women up to 50 and 1,200 mg from 51. Other countries set different figures: the NHS says adults in the UK need 700 mg a day. This checker uses the US figures, which are higher.
Why does calcium matter more around menopause?
Bone density falls faster in the years around the final period, as oestrogen declines, and the loss causes no symptoms until a bone breaks. Getting enough calcium and vitamin D, together with strength or impact exercise, is part of protecting it.
Should I take a calcium supplement?
This checker can’t tell you that. If your estimate is low, food is the first place to look. If you’re thinking about a supplement, talk to your GP or pharmacist first: they can check whether you need one, and how much, alongside any medication you take. More isn’t always better, and calcium supplements can interact with some medicines.
Why isn’t spinach on the list?
Spinach contains calcium, but very little of it is absorbed. In one study, people absorbed about 5% of the calcium in spinach, compared with about 28% from milk. Kale is different: its calcium is absorbed well, so it is included.
How accurate is the estimate?
It’s a rough guide. It counts only the foods listed, uses typical portions, and calcium varies by brand, especially in plant milks and tofu. Bread, vegetables and other foods add a little more, so your real total is probably somewhat higher.
More free tools
Perimenopause protein calculator: how much protein you need a day, and per meal.
Perimenopause symptom checklist: tick what you've noticed and get a list to take to your doctor.
Caffeine cut-off calculator: the latest time to have coffee without cutting into your sleep.
Sources
- Ross AC, et al. The 2011 report on dietary reference intakes for calcium and vitamin D from the Institute of Medicine: what clinicians need to know. J Clin Endocrinol Metab. 2011. PubMed
- US Department of Agriculture. FoodData Central (SR Legacy). fdc.nal.usda.gov
- NHS. Vitamins and minerals: calcium. nhs.uk
- Heaney RP, et al. Calcium absorbability from spinach. Am J Clin Nutr. 1988. PubMed
- Heaney RP, Weaver CM. Calcium absorption from kale. Am J Clin Nutr. 1990. PubMed
This checker gives a rough dietary estimate, not medical advice, and it can’t tell you whether you need a supplement. If you have kidney stones, a kidney or parathyroid condition, osteoporosis, or take medication that affects bone, speak to your doctor or pharmacist about calcium.