Bulking calorie calculator.

A bulking calorie calculator takes your maintenance calories and adds a surplus based on how fast you want to gain. You enter your maintenance number, your bodyweight, and a bulk pace (lean, moderate, or aggressive). It returns your daily bulking calories, the size of the surplus, a protein-first macro split in grams, and the weekly weight gain that surplus is likely to produce. It is a starting plan you then adjust from real scale trends.

Most coaches use a surplus of roughly 10 to 20 percent over maintenance. A lean bulk sits near +10 percent and gains slowly with less fat; a moderate bulk near +15 percent; an aggressive bulk near +20 percent and gains faster with more fat to lose later. For most lifters past the beginner stage, the lean-to-moderate range builds muscle with far less fat to cut afterward, which is why this calculator defaults to a moderate pace.

A common target is about 0.25 to 1 pound (0.1 to 0.45 kg) per week, depending on training age and pace. Beginners and those returning from a break can gain at the faster end and put more of it toward muscle; experienced lifters gain slower to keep fat gain in check. This calculator projects your weekly gain from the surplus using the rule that about 3,500 calories of cumulative surplus adds roughly one pound (7,700 per kilogram).

Around 0.7 to 1 gram of protein per pound of bodyweight (about 1.6 to 2.2 g per kg) is the standard range for building muscle. This calculator sets protein at roughly 1 gram per pound, then fills fat at about 25 percent of total calories and puts the rest into carbohydrate to fuel training. Protein is the macro you keep steady; carbs and fats flex with the surplus. Higher carbs in a bulk are a feature, not a problem - they power the hard sessions that drive growth.

Yes - the bulking calorie calculator adds a surplus on top of maintenance, so it needs that number to start from. If you do not know it, estimate it with the maintenance calorie calculator or the TDEE calculator first, then come back and enter it here. Maintenance is only an estimate, so treat the output as a starting point: track your weekly weight for two to three weeks and nudge calories up if the scale is flat, or down if it is climbing too fast.

Some fat gain is normal in a surplus - you cannot build muscle at a meaningful rate without eating above maintenance, and no split of macros makes the gain pure muscle. The point of choosing a lean or moderate pace is to keep the surplus small enough that most of the gain is muscle and glycogen, leaving less fat to cut later. Early scale jumps also include water and glycogen as carbs go up, so judge progress over two to three weeks, not day to day.