Matt's Macros
Calculators

Free tools that pull weight.

Small calculators for the parts of training nutrition that a single macro number can't cover. Free to use, no signup, no upsell.

Tool 01

Hybrid athlete macro calculator

Weekly training-day macros for hybrid athletes. One weekly calorie target split into rest-day, easy-day, and hard-day macros so carbs rise with training demand.

  • Rest, easy, and hard day targets from a single weekly budget
  • Lose, maintain, or build with rate of change
  • Mifflin-St Jeor BMR, cited methodology
Run my numbers

Tool 02

Endurance carb loading

48-hour pre-race fueling plan for endurance runners. Daily loading targets, race-morning meal, and in-race grams per hour, scaled to your weight and finish time.

  • Half marathon through 100 mile
  • Loading + race morning + in-race, one plan
  • Grounded in modern sport-nutrition literature
Plan my race fuel

Tool 03

Hyrox carb loading

Whether you even need to carb load, keyed to your target finish time. Race-morning meal, in-race carbs, and the study behind every number.

  • By finish time, not race distance
  • Singles, doubles, and relay
  • A source line on every number
Check my Hyrox fuel

Tool 04

Gut training

A week-by-week plan to build in-race carb tolerance toward your race-day rate, timed to your race date, with each number marked evidence or convention.

  • A dated week-by-week ramp
  • Tells you honestly if you're out of runway
  • Evidence and convention, labeled
Build my gut plan

Tool 05

Easy meal prep builder

Build an easy meal prep from ground meat, frozen vegetables, and rice, then adjust the servings and see the macros per serving, calculated from USDA and brand label data.

  • Macros per serving from one batch
  • USDA and brand label data on every ingredient
  • Any number of servings from 1 to 7
Build my meal prep
mero

Your numbers are the target.Mero builds the week.

Turn your macro targets into a meal plan, grocery list, and prep workflow built around your training calendar.

Join the Waitlist

· Mero waitlist email only. Matt's Macros updates are separate.

Five free calculators29 kitchen-tested recipesCited articles on training and eatingNo paid membershipReal food, real macrosFive free calculators29 kitchen-tested recipesCited articles on training and eatingNo paid membershipReal food, real macrosFive free calculators29 kitchen-tested recipesCited articles on training and eatingNo paid membershipReal food, real macrosFive free calculators29 kitchen-tested recipesCited articles on training and eatingNo paid membershipReal food, real macros