Aire Libre y Aventura

24 herramientas gratuitas para ayudarte con aire libre y aventura

Backpack Weight Calculator

Free Backpack Weight Calculator — calculate your pack's base weight, total weight, Big Three breakdown, and weight-to-body ratio in lbs and kg. Includes gear checklist for every category, consumable estimators, and weight reduction tips.

Bike Frame Size Calculator

Free Bike Frame Size Calculator — find your perfect bicycle frame size using height and inseam length for road, mountain, hybrid, and kids bikes.

Bow Draw Weight Calculator

Free Bow Draw Weight Calculator — find your actual draw weight at your personal draw length, get archer-profile recommendations, and calculate arrow kinetic energy and hunting suitability.

Bullet Drop Calculator

Free Bullet Drop & Ballistic Trajectory Calculator — compute drop, wind drift, velocity, energy, and time of flight at any range with G1/G7 drag models, atmospheric corrections, and DOPE card export.

Calculadora de Combustible para Estufas de Camping

Calculadora de combustible para estufas de camping gratuita para excursiones de senderismo y camping. Estima el combustible total necesario en gramos y onzas, obtén recomendaciones de cartuchos, compara tamaños y verifica cartuchos parciales.

Cycling Power Calculator

Free Cycling Power Output Calculator — compute required watts from speed, or find achievable speed from power, using real physics (gravity, aerodynamic drag, and rolling resistance).

Elevation Gain Calculator

Free Elevation Gain Calculator — calculate total elevation gain, grade percentage, difficulty scores, energy miles, and calories burned for hiking, running, and treadmill workouts.

Fish Weight Estimator

Free Fish Weight Estimator — estimate the weight of your catch using species-specific formulas. Supports 30+ freshwater and saltwater species with length + girth or length-only calculations, body condition scoring, relative weight (Wr) index, trophy comparison, and catch log with CSV export.

Fishing Line Strength Calculator

Free Fishing Line Strength Calculator — convert between PE number, diameter, monofilament, and braided line ratings. Includes knot strength estimator, species recommendations, line condition factor, and safe working load.

Game Meat Yield Calculator

Free Game Meat Yield Calculator — estimate boneless meat yield, freezer space, servings, and cost savings from any big game animal including deer, elk, moose, bear, and more.

Golf Handicap Calculator

Free World Handicap System (WHS) Golf Handicap Index calculator. Enter up to 20 rounds to compute your official Handicap Index, Course Handicap, Playing Handicap, and score differentials — with trend chart, round history, and CSV export.

Hike Time Estimator

Free Hike Time Estimator — calculate hiking time using Naismith's Rule, Book Time, Tobler's Function, Langmuir, and Tranter corrections. Supports multi-segment routes, terrain, fitness, pack weight, weather, and group adjustments.

Hiking Calorie Calculator

Free Hiking Calorie Calculator — estimate calories burned hiking based on your body weight, pack load, distance, elevation gain, terrain type, altitude, and temperature. Includes multi-day trip planner and food weight estimator.

Kayak Size Calculator

Free Kayak Size Calculator — find the right kayak length, width, weight capacity, and hull volume for your height, weight, kayak type, and paddling style.

Marathon Pace Calculator

Free Marathon Pace Calculator — calculate your required pace from a target finish time, generate per-mile and per-km split tables, predict race times across distances using Riegel's formula, and get VDOT-based training zones.

Rock Climbing Grade Converter

Free Rock Climbing Grade Converter — instantly convert between YDS, French, UIAA, British, Australian, South African, Hueco V-Scale, and Fontainebleau bouldering grades with difficulty band labels and a full reference table.