1500 Calorie Zigzag Calculator
See a 7-day calorie cycling schedule that averages 1,500 calories a day — higher days and lower days that still add up to the same weekly total.
Zigzag Calorie Calculator
Sets your weekly average: a calorie cut to lose (you choose the size below), maintenance to hold, or a 300 kcal/day surplus to gain.
A smaller deficit loses slower but is easier to sustain and better protects muscle — pick a gentler cut if you are already lean or training hard.
Used to estimate your maintenance calories — the energy you burn in a day — with the Mifflin-St Jeor equation, a standard peer-reviewed formula.
Range: 15–100 years
Range: 30–300 kg
Enter your height in centimeters (e.g., 170 cm)
Range: 100–250 cm
The schedule puts your highest day here — line it up with your hardest training or a social meal, and the rest of the week rotates to match. The weekly average doesn't change.
Already know your maintenance (TDEE)? Enter it to skip the estimate — height and age aren't needed then. Don't know it? Find it with the TDEE Calculator.
*This calculator is for informational purposes only. Please consult a healthcare professional before making any health decisions. See our medical disclaimer for more information.
Quick Answer
How to Zigzag a 1,500-Calorie Day
A 1,500-calorie zigzag plan holds the same weekly total as a flat 1,500 a day — 10,500 kcal across seven days — but moves the calories around. Higher days reach about 1,725 kcal, lower days dip to about 1,275 kcal, and the week still averages exactly 1,500. The schedule above is worked out for you; read it off, or change the goal to cycle a different number.
The Week That Averages 1,500
Cycling takes a single weekly budget and spreads it unevenly instead of evenly. Begin from a 1,500-calorie average and the calculator multiplies it across seven fixed factors that are chosen to add up to exactly seven — which is the whole reason the week still averages 1,500. Two days come in a little high, around 1,725 and 1,650 calories; two come in a little low, around 1,350 and 1,275; and one sits on the 1,500 baseline. The weekly total, 10,500 calories, is untouched. Nothing is gained or lost by the rearrangement — the days are simply no longer identical, which for some people makes a moderate cut easier to live with.
Keep the Low Days Off Each Other
At a 1,500 average the low days sit close to the floor that the full tool watches for, so the one practical rule is not to stack them back to back. Spread the higher days onto your hardest training or your social evenings, and let the lower days fall on quiet rest days with a well-fed day either side. The day labels are only a template — shuffle them freely, as long as the count of high, low and baseline days stays the same so the average holds. If you are not sure 1,500 is the right average to begin with, the TDEE Calculator works out what your body burns and the Calorie Deficit Calculator sets a sensible target to cycle.
Protein First on Every Day
On a cut, the figure to protect is protein, and that matters most on the low days — keeping protein high while the calories dip is what spares muscle. Decide the seven daily numbers first, then plan the protein, carbohydrate and fat for each with the Macro Calculator. To rebuild the whole cycle from your own stats rather than a fixed 1,500, use the full Zigzag Calorie Calculator. These are general estimates for healthy adults, not medical advice.
The 7-day pattern uses multipliers that sum to exactly 7, so the weekly average always equals your target — arithmetic, not a metabolic effect. Maintenance estimates elsewhere on the site use the Mifflin-St Jeor equation (1990); the safe-floor note follows the NHS lower limits for unsupervised dieting (about 1,500 kcal for men, 1,200 for women). Calorie cycling isn’t recommended under 19, in pregnancy or breastfeeding, or with a history of disordered eating — check with a clinician or registered dietitian first. Individual needs vary.
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