Surf Calculators & Tools — SurfVault

🌊 Your Ultimate Surf Companion — Tools Built by Surfers, for Surfers

Wave Tools & Guides

Surfboard Volume Calculator

Calculate ideal board volume (liters) based on weight, skill, and wave conditions.

Wave Height Planner

Convert swell data to real wave face height — accounts for period and break slope.

Find optimal session windows based on tide range and break type.

Paddle Power Estimator

Calculate paddle speed needed vs your fitness level and board volume.

Wetsuit Thickness Guide

Find the right wetsuit configuration for current water temperature.

Swell Energy Calculator

Quantify wave energy from swell height and period — understand wave power.

Beach Rating Tool

Score any break on wave quality, crowds, safety, and access — 0-10 rating.

Track wave count, session duration, and wave rate per hour.

Duck Dive Depth Calculator

Calculate required depth push and assess whether your board volume makes duck diving practical.

Fin Selection Guide

Find the right fin setup for your board type, conditions, and style.

Surf Fitness Score

Estimate surfing-specific fitness from paddling ability, breath-hold, and wave count.

Leash Length Calculator

Find the right leash length for your board and conditions.

Surf Wax Temperature Guide

Choose the right wax for current water temperature.

Sun Protection Calculator

Calculate safe sun exposure time and plan your protection strategy.

Surfboard Length Guide

Find the ideal board length for your height, weight, and skill level.

Bodyboard Size Guide

Find the right bodyboard size for your weight and conditions.

Swell Period Explained

Understand what swell period means and how it affects wave quality.

Surf Forecast Decoder

Decode a surf forecast — combine swell, wind, and tide for an overall quality rating.

Kick Turn Practice Timer

Practice kick turns with structured timer — track reps and rest intervals.

Board Volume LTO Calculator

Calculate lift-to-order ratio for surfboard performance assessment.

Surf Interval Timer

Structure surf training with work/rest intervals — sprint paddle, recover, repeat.

Reef Hazard Guide

Assess reef break hazards — depth, coral type, and injury risk.

Tide Change Planner

Calculate tide change times and plan optimal session windows.

Ding Repair Cost Estimator

Estimate surfboard repair cost based on damage type and board value.

Competitive Surf Score Estimator

Estimate competitive heat scores from wave selection, maneuver count, and variety.

Swell Direction Finder

Understand how swell direction affects wave quality at different breaks.

Wetsuit Sizing Calculator

Find your correct wetsuit size based on height, weight, and chest measurement.

Surf Stretching Guide

Follow a surf-specific stretching routine for injury prevention.

Saltwater Gear Corrosion Guide

Assess saltwater corrosion risk and estimate replacement timeline.

Surf Fitness Training Plan

Generate a surf-specific fitness plan based on fitness and goals.

Surf Travel Packing Checklist

Generate a personalized packing list based on destination and conditions.

Ding Severity Assessment Tool

Assess ding severity to determine if you can surf or need repair.

Local Knowledge Rating

Rate your local break knowledge from beginner to expert local status.