1800 Calorie Zigzag Calculator
See a 7-day calorie cycling schedule that averages 1,800 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 an 1,800-Calorie Day
An 1,800-calorie zigzag plan keeps the same weekly total as a flat 1,800 a day — 12,600 kcal across seven days — but varies the daily amount. Higher days reach about 2,070 kcal, lower days dip to about 1,530 kcal, and the week still averages exactly 1,800. The schedule above is worked out for you; read it off, or change the goal to cycle a different number.
The Week That Averages 1,800
A flat plan repeats the same number seven times; a zigzag splits the same weekly budget unevenly. Start from an 1,800-calorie average and the calculator multiplies it by seven fixed factors that are built to add up to exactly seven — and because they do, seven days of them average back to 1,800. Two days arrive a little high, near 2,070 and 1,980 calories; two a little low, near 1,620 and 1,530; and one rests on the 1,800 baseline. The weekly total stays put at 12,600 calories. None of it is invented or removed by the cycling — the budget is simply distributed so the days have some shape to them.
Match the Days to Your Week
The days in the schedule are a template you are meant to rearrange. Put the higher days where the food is wanted — a long training session, a meal out — and the lower days on quieter rest days, keeping the same count of high, low and baseline days so the 1,800 average is preserved. If you have not yet pinned down whether 1,800 is the right average, start one step back: the TDEE Calculator estimates the calories your body burns in a day, and the Calorie Deficit Calculator sets a target from it that you can then cycle.
Turn the Days Into Macros
Calories are only half of a plan; what each day is made of is the other half. Hold protein steady across the whole week — including the low days — to protect muscle, and let carbohydrate flex up on the higher, harder days. To convert any of the seven daily totals into grams of protein, carbohydrate and fat, run the Macro Calculator, or rebuild the full cycle from your own stats on the 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). Cycling does not change your weekly calorie total or your weekly deficit. 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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