Our Mission
Most calorie calculators stop at one number. CalorieCalculator.xyz goes further: pick your specific goal from 7 presets, see your target split across meals, and get an honest estimate of how long it will realistically take to reach a target weight.
Our Methodology
We use the Mifflin-St Jeor equation for basal metabolic rate, apply a standard activity multiplier, and adjust for your selected goal. Our time-to-goal estimate uses the widely cited approximation that roughly 7,700 kcal of cumulative deficit or surplus corresponds to about 1 kg of body fat.
Important: we are an informational resource, not a medical provider. Read our full Disclaimer before making health decisions based on any calculator result.
Editorial Standards
We're upfront about the limitations of our formulas and timeline estimates — real progress isn't perfectly linear, and we say so rather than overselling precision.
What We're Building Next
We're exploring a weekly calorie cycling planner and refeed day guidance, continuing the same standard: transparent math, no dark patterns, free forever.
Free, Always
No paywalls, no account required, no hidden premium tier.
Goal-Oriented
7 goal presets, not just one generic number.
Privacy-First
Your inputs never leave your browser or touch our servers.