Calculadora de Gordura Corporal — Método Navy | CalcxApp
Estime o percentual de gordura pelo método da Marinha dos EUA.
% de gordura corporal
23,5%
Categoria
Médio
Massa magra (kg)
57,4
Massa gorda (kg)
17,6 kg
Composição corporal
Faixas de gordura corporal
Composição corporal
| Categoria | Faixa | Sua gordura corporal |
|---|---|---|
| Essencial | 2 – 6% | — |
| Atleta | 6 – 14% | — |
| Fitness | 14 – 18% | — |
| Médio | 18 – 25% | 23.5% |
| Obeso | 25 – 50% | — |
Exemplo prático
Real scenario: Sam, 35, is making a real health-related decision this month. They need to figure out their Body Fat to set a baseline, track progress, or compare against a target. They plug in the values below to see the actual number, not just a rough mental estimate or something they read online.
Step 1 — The core measurement: The first value Sam enters is the main body metric: weight, height, age, activity level — whatever the calculator needs as its anchor input. Let's say they enter 170 pounds (77 kg) and a height of 5'9" (175 cm), age 35. This is a realistic figure for someone in Sam's position, based on typical values for adults with similar characteristics.
Step 2 — The supporting details: With the main number in, Sam adds the variables that fine-tune the result: gender, age, activity level, additional measurements. These shape the outcome without defining it. Sam enters male, moderately active (3-5 workouts per week), with a goal of losing 10 pounds in 12 weeks.
Step 3 — Reading the result: The calculator returns: [result]. Before trusting the number, Sam sanity-checks it. First: does this result fall in the range the calculator's reference chart suggests? Second: if Sam nudges the main input by 5-10% in either direction, does the result move in a way that makes intuitive sense? Both checks pass, so the number is good to act on.
Important note: This calculator provides a general estimate, not medical advice. Sam plans to discuss the result with their doctor at their next checkup, especially if the number is at the edge of a category or has shifted significantly from a previous measurement. For decisions about diet, exercise, or medication, professional guidance is essential.
What Sam does next: Sam records the result in a health tracking app and re-runs the calculation monthly, or whenever one of the inputs changes substantially. The goal isn't to obsess over a single number, but to track trends over time and notice when something moves in an unexpected direction.
Try it yourself: The numbers above are just an example. Plug in your own values, and the result will update instantly. Run it a few times with slightly different inputs to see how sensitive the result is to each variable — that's how you figure out which factor matters most for your specific situation.
Perguntas Frequentes
Qual percentual de gordura é saudável?
Homens: 10-20%. Mulheres: 18-28%. Atletas podem ter 6-12% (homens) e 14-20% (mulheres). Abaixo do essencial há riscos hormonais.
Como medir percentual de gordura?
Métodos do mais ao menos preciso: DXA, hidrostática, BodPod, bioimpedância (escalas), dobras cutâneas (adipômetro). Cada um tem margem de erro.
Bioimpedância é confiável?
Razoavelmente (±3%). A precisão depende de hidratação, horário, e tipo de balança. Para tendências ao longo do tempo é útil, não para valor absoluto.
Posso ter IMC normal e gordura alta?
Sim, é o "magro por fora, gordo por dentro" (TOFI). Pessoa com peso normal mas baixa massa muscular e alta gordura visceral. Exercício de força é essencial.
Como reduzir gordura corporal?
Déficit calórico moderado + alta proteína + treino de força. Cardio ajuda, mas musculação preserva músculo e aumenta TMB. Consistência > intensidade.
Disclaimer: Esta calculadora fornece estimativas apenas para fins informativos. Os resultados reais podem variar. Consulte um profissional qualificado para aconselhamento personalizado.