Refeed Day Calculator

A refeed is a planned high-carb day that lifts you out of a deficit up toward maintenance, refilling muscle glycogen and giving leptin, training, and willpower a much-needed break.

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What Is a Refeed Day?

A refeed is a short, planned increase in calories, driven almost entirely by carbohydrate, that lifts you out of a calorie deficit and up toward your maintenance level (TDEE) for a single day. It is not a cheat day. A cheat day is a free-for-all of fat-heavy junk; a refeed is a structured, high-carb day with protein held steady and fat kept modest. If your maintenance is 2,400 kcal and you have been dieting at a 500 kcal deficit (1,900 kcal), a full refeed pushes you back up to about 2,400 kcal, with most of those extra 500 calories arriving as rice, potatoes, fruit, and oats rather than ice cream.

How the Targets Are Built

We take your TDEE, multiply by your chosen refeed level (90%, 100%, or 110% of maintenance), and that becomes your refeed-day calorie target. Carbs are set from your body weight at 1.5 to 2.5 grams per pound, protein is anchored near 1 gram per pound, and fat fills whatever calories remain, with a healthy floor so it never drops too low.

refeedCal = TDEE x level; carbG = bodyWeight(lb) x carbPerLb; fatCal = refeedCal - (carbG x 4) - (proteinG x 4)

Why the Scale Jumps (and That Is Fine)

Every gram of stored muscle glycogen pulls roughly 3 grams of water with it. Load 330 grams of carbs and you can refill glycogen enough to add a couple of pounds of water weight overnight. That is not fat, and it flushes out within a day or two once you return to your deficit. Refilling glycogen is exactly why a well-timed refeed makes the next few training sessions feel stronger and gives a stalled cut a psychological and hormonal reset.

Frequently Asked Questions

How often should I take a refeed day?
It scales with how lean and how deep into a cut you are. Heavier or newer dieters often need none or just one every two weeks, while lean people running an aggressive deficit may benefit from one or two refeed days per week. A simple rule: the leaner you get and the longer the cut, the more frequent refeeds help.
Is a refeed the same as a cheat day?
No, and the difference matters. A cheat day is unplanned and usually fat-heavy, which makes it easy to wipe out a week of deficit in one sitting. A refeed is calculated, carb-focused, and capped at or near maintenance, so it refills glycogen and supports leptin without adding meaningful fat over the week.
Why is the refeed mostly carbs instead of fat?
Carbohydrate is what refills muscle glycogen and most strongly nudges leptin, the hormone that drops during a diet and slows things down. Fat does neither job well and is calorie-dense, so loading fat just adds calories without the metabolic or performance payoff. Keeping protein steady and pushing carbs gives you the most benefit per calorie.
Will a refeed day ruin my weight loss?
Not if it is planned and capped at maintenance. A full refeed adds zero or near-zero fat because you are not in a surplus, and the temporary scale jump is glycogen water, not fat. Over a full week the small reduction in your average deficit is usually outweighed by better adherence, training, and recovery.

Common Tip Percentages

ServiceTypical Tip RangeNotes
Restaurant (sit-down)15–20%20%+ for exceptional service
Food delivery10–20%Consider extra for long distances
Taxi / rideshare10–20%More for assistance with luggage
Hotel housekeeping$2–5/nightLeave daily, not just at checkout
Barber / hair salon15–20%On pre-discount total
Pizza delivery10–15% or $3–5 minimumHigher in bad weather

General Household Budget Ratios (50/30/20 Rule)

Category% of Net IncomeExamples
Needs50%Rent, groceries, utilities, insurance
Wants30%Dining out, entertainment, hobbies
Savings / Debt20%Emergency fund, retirement, extra payments

Common Measurement Conversions for Everyday Use

QuantityUS / ImperialMetric Equivalent
1 cup8 fl oz237 mL
1 pint16 fl oz473 mL
1 quart32 fl oz946 mL
1 gallon128 fl oz3.785 L
1 lb16 oz453.6 g
1 ft12 in30.48 cm

Practical Guide for Refeed Day Calculator

Place your refeed on your hardest training day. A glycogen-loaded leg or back session moves more weight, burns more, and recovers better, so the extra carbs do real work instead of just sitting there. On a rest day a refeed still helps psychologically, but the performance payoff is smaller.

Keep protein constant and let carbs do the cycling. Aim for about 1 gram of protein per pound of body weight every day, refeed or not, then layer the refeed carbs on top while trimming fat to make room. Sticking to whole-food carbs like rice, potatoes, oats, and fruit makes the volume easy to hit and keeps digestion comfortable.

Judge a refeed by the weekly average, never the next-day scale. The pound or two you see the morning after is stored water riding alongside fresh glycogen, and it leaves within a day or two of returning to your deficit. Track a seven-day rolling average so a single high reading after a refeed does not trick you into thinking the diet stalled.

Quick Checklist

  • Schedule the refeed on your most demanding training day.
  • Hold protein near 1 g per pound; cycle carbs, not protein.
  • Use whole-food carbs and keep fat modest on the refeed.
  • Compare a weekly scale average, not the next-morning number.