RNI Malaysia is the Recommended Nutrient Intakes for Malaysia 2017, the Ministry of Health's table of daily energy and nutrient needs by age and sex. Energy is a Malaysian BMR equation multiplied by an activity level (PAL 1.4 to 2.0) at a BMI 22 reference weight; protein is 1.00 g per kg of body weight.
TL;DR
- The adult energy table rests on a 61 kg man and a 52 kg woman: the weight that gives a BMI of 22 at the median Malaysian height.
- Every adult energy figure in the 2017 book can be rebuilt from two Malaysian equations and four activity levels; I rebuilt all 24 and each matched to the last 10 kcal.
- At 80 kg, a man aged 30 to 59 gets 2,510 kcal by the same method, 320 more than the 2,190 the table prints.
- For the same person, the RNI's resting figure runs 5 to 7% below the Mifflin-St Jeor formula most calorie calculators use for men, and 3 to 8% above it for women.
- Protein is 1.00 g per kg of body weight a day for adults: 61 g for the reference man aged 30 to 59, 52 g for the reference woman.
What is RNI Malaysia?
RNI stands for Recommended Nutrient Intakes, Malaysia's official reference for how much energy and how much of 30 nutrients people need each day, by age, sex, pregnancy and breastfeeding. The current edition is the 2017 report of the National Coordinating Committee on Food and Nutrition (NCCFN), Ministry of Health Malaysia, which replaced the 2005 edition.
The full book is a 542-page PDF on the Ministry's Nutrition Division site (Recommended Nutrient Intakes for Malaysia 2017, read 30 October 2026). It covers energy, protein, fat, carbohydrate, 12 vitamins and 14 minerals and trace elements.
- For most nutrients, the RNI is the average requirement plus two standard deviations: enough for about 97.5% of healthy people in the group. The book says this matches the American RDA (Recommended Dietary Allowance).
- For energy, it is not. The energy figure is the plain average requirement of the group, because an intake set above most people's needs would, in the book's words, imply "a high probability of obesity for most people".
One search caution: "RNI" is also the rate of natural increase in population studies. This post is only about the nutrition RNI.
How is the RNI for energy calculated?
By the factorial method: basal metabolic rate (BMR, the energy a body uses at complete rest) multiplied by a physical activity level (PAL, the day's total energy as a multiple of BMR), at a fixed reference weight for each age and sex.
- The BMR equations. For adults aged 19 to 59 the book uses equations measured in Malaysians (Ismail and colleagues, 1998); for 60 and over, Schofield's 1985 equations. They take body weight only, in kg, and give MJ a day:
- Men 19 to 29: 0.0550 × weight + 2.480. Men 30 to 59: 0.0432 × weight + 3.112.
- Women 19 to 29: 0.0535 × weight + 1.994. Women 30 to 59: 0.0539 × weight + 2.147.
- The activity levels. PAL 1.4 for low active (sedentary), 1.6 moderately active, 1.8 active and 2.0 very active, values the book takes from the European Food Safety Authority (2013). PAL 1.6 is its default for the general population.
- The unit. MJ to kcal at 4.184 kJ per kcal, rounded to the nearest 10.
The printed adult table at PAL 1.6 reads 2,240 kcal for men aged 19 to 29, 2,190 for men 30 to 59 and 2,030 for 60 and over; 1,840, 1,900 and 1,770 kcal for women. A worked line: a man aged 19 to 29 at the reference 61.4 kg has a BMR of 0.0550 × 61.4 + 2.480 = 5.857 MJ; at PAL 1.4 that is 8.20 MJ, 1,960 kcal, the exact figure the table prints.
Why is the RNI built on a 61 kg man and a 52 kg woman?
Because the 2017 committee set adult reference weights at a BMI of 22, using the median height of Malaysian adults in the National Health and Morbidity Survey 2015. A man aged 30 to 59 is 166.0 cm at the median, and 22 × 1.66² is 60.6 kg; a woman of the same age is 154.1 cm, which gives 52.2 kg.
BMI, body mass index, is weight in kg divided by height in metres squared. The book gives its reason plainly: with obesity rising, the energy requirement for every group was estimated at this "desired" weight, and the 2017 figures came out about 8 to 18% lower than the 2005 ones for adolescents and adults. The BMI calculator for Malaysia shows where 22 sits against the Ministry of Health's cut-offs.
How do I calculate my own RNI for energy?
Use the book's equation for your age and sex with your own weight, multiply by your PAL, and convert to kcal. Four steps, shown for a man aged 30 to 59 who weighs 80 kg and is moderately active:
- BMR. 0.0432 × 80 + 3.112 = 6.568 MJ a day.
- Activity. 6.568 × 1.6 = 10.509 MJ a day.
- kcal. 10.509 × 1,000 ÷ 4.184 = 2,512 kcal, which the book's rounding prints as 2,510.
- Compare. The table row for his age says 2,190 kcal. The 320 kcal gap is his extra 19.4 kg over the reference weight.
Each extra kg adds about 16.5 kcal a day for men aged 30 to 59 at PAL 1.6, and about 20.6 kcal for women of the same age. A woman aged 30 to 59 at 60 kg comes to 2,060 kcal against the table's 1,900, and at 70 kg to 2,260.
The result is an estimate of average need for people of that weight, the same kind of number the table is. It is not a measurement of one person, and it is not a target: the book keeps a person's own activity, and nothing else, as the way to adjust it.
How does the RNI compare with online calorie calculators?
For the same person, the RNI's Malaysian equations give men a lower resting figure and women a higher one than the Mifflin-St Jeor formula, the equation behind most online calorie calculators, including the maintenance calorie estimate on this site.
Mifflin-St Jeor uses weight, height and age; the RNI equations use weight alone. The table below sets them side by side for a 35-year-old at the survey's median height (166.0 cm for men, 154.1 cm for women), computed by the script in this post's working folder:
| Person | RNI table, PAL 1.6 | RNI method at this weight | Resting, RNI equation | Resting, Mifflin-St Jeor |
|---|---|---|---|---|
| Man, 60.6 kg | 2,190 | 2,190 | 1,369 | 1,474 |
| Man, 70 kg | 2,190 | 2,350 | 1,467 | 1,568 |
| Man, 80 kg | 2,190 | 2,510 | 1,570 | 1,668 |
| Woman, 52.2 kg | 1,900 | 1,900 | 1,186 | 1,149 |
| Woman, 60 kg | 1,900 | 2,060 | 1,286 | 1,227 |
| Woman, 70 kg | 1,900 | 2,260 | 1,415 | 1,327 |
- Men. The RNI's resting figure is 5.3 to 7.1% below Mifflin-St Jeor across 60.6 to 90 kg.
- Women. It is 3.2 to 8.2% above, and the gap widens with weight, from 52.2 to 80 kg.
- The activity scales differ too. RNI's PAL runs 1.4 to 2.0; calculator multipliers usually run 1.2 to 1.9, and this site's "moderate" box is 1.55. Compare resting figures with resting figures.
Neither is a measurement. Both are equations fitted to groups of people; the 1998 equations to Malaysian adults, Mifflin-St Jeor's to the 498 adults of its 1990 study.
What is the RNI for protein?
For adults, 1.00 g of protein per kg of body weight a day. At the reference weights that is 62 g for men aged 19 to 29, 61 g for men 30 to 59, 53 g for women 19 to 29 and 52 g for women 30 to 59.
- Where 1.00 comes from. The book starts from the WHO/FAO/UNU 2007 safe level of 0.83 g per kg and cites consensus statements that 1.0 to 1.5 g per kg "may confer health benefits", then settles on 1.00.
- At your own weight. The rule is per kg, so 70 kg gives 70 g and 80 kg gives 80 g.
- Older adults. 58 g for men and 50 g for women aged 60 and over, with the text noting evidence for 1.0 to 1.2 g per kg as a compromise for the elderly.
- Pregnancy and breastfeeding. Extra grams by trimester (+0.5, +8, +25) and by stage of breastfeeding (+19, then +13).
The protein calculator on the RNI does the per-kg arithmetic for adults, and how much protein you need a day sets the RNI beside the other published references.
What does the RNI say about carbohydrate, fat and sugar?
It gives shares of total energy rather than grams: carbohydrate 50 to 65%, fat 25 to 30% and protein 10 to 20% for Malaysian adults, with free sugar at 10% or less and dietary fibre at 20 to 30 g a day.
Turned into grams at the table's 2,190 kcal (a man aged 30 to 59, PAL 1.6), at 4 kcal per gram of carbohydrate and protein and 9 per gram of fat:
- Carbohydrate: 274 to 356 g.
- Fat: 61 to 73 g.
- Protein: 55 to 110 g, a wider band than the 61 g RNI, because it is a share of energy rather than a requirement.
- Free sugar: up to 55 g. At the table's 1,900 kcal for a woman aged 30 to 59, up to 48 g.
Free sugar means sugar added to food and drink plus the sugar in honey, syrups and fruit juice; it excludes the sugar naturally in milk and whole fruit. For scale, a 300 ml teh tarik carried about 30 g of sugar in a 2026 lab test, counting the milk's lactose.
What I found when I rebuilt the tables
I wrote a short script that takes the book's equations and reference weights and prints the tables back. It is kept with the post's working files and also runs this site's own Mifflin-St Jeor function, so the comparison above uses the same code as the calculator.
- All 24 adult energy figures match. Six age and sex bands, four activity levels, every one to the last 10 kcal.
- The reference weights are BMI 22 exactly. 61.36, 60.62, 52.86 and 52.24 kg, printed as 61.4, 60.6, 52.9 and 52.2.
- One protein figure is rounded up. 1.00 g × 61.4 kg is 61.4 g, which rounds to 61; the book prints 62 for men aged 19 to 29.
- Women aged 30 to 59 get more than women aged 19 to 29. 1,900 against 1,840 kcal at PAL 1.6, while men go the other way (2,190 against 2,240). At the same 52 kg, the older band's equation gives a BMR of 1,183 kcal and the younger one 1,141. That is how the two 1998 equations were fitted, not a printing error.
Do I need an app to use the RNI?
No. A calculator and the four steps above are enough for energy, and protein is one multiplication.
The two calculators on this site that touch it, both free with no account: the protein calculator uses the RNI's 1.00 g per kg; the maintenance calorie estimate uses Mifflin-St Jeor, not the RNI equations, and its from-your-log page measures maintenance from your own weigh-ins instead of an equation. Neither gives a calorie or protein target.
Habitus Mind is free to start. Food logging and the ticked MyFCD foods live in its Fitness module; to try it, create a free account.
FAQ
What does RNI stand for in nutrition?
Recommended Nutrient Intakes. In Malaysia it is the Ministry of Health's 2017 reference for daily energy and 30 nutrients by age, sex, pregnancy and breastfeeding, published by the National Coordinating Committee on Food and Nutrition.
What is the RNI for energy for Malaysian adults?
At the default PAL 1.6: 2,240 kcal for men aged 19 to 29, 2,190 for 30 to 59 and 2,030 for 60 and over; 1,840, 1,900 and 1,770 kcal for women. These assume a BMI 22 reference weight.
How do I calculate my own RNI?
For energy, put your weight into the book's BMR equation for your age and sex, multiply by your activity level (1.4 to 2.0) and convert MJ to kcal by dividing by 4.184 and multiplying by 1,000. For protein, multiply your weight in kg by 1.00 g.
Is RNI the same as RDA?
For nutrients, yes in definition: the book says its RNI, the average requirement plus two standard deviations, is equivalent to the American RDA. For energy, no: the RNI is the average requirement.
Is there a newer RNI than 2017?
The 2017 report is the edition the Ministry of Health's Nutrition Division publishes, in a PDF filed under December 2023. It replaced the 2005 RNI; I found no later edition on 30 October 2026.
