Calculator Directory

Hobby Calculators

  • Aquarium
    You can use these calculators to calculate volume, water chemistry, glass, design, electrics, and more..
  • Chess - Darts - Karts - Boats
    You can use these calculators to calculate chess rating, darts score, kart ratio, and bass boat speed.
  • Horses
    You can use these calculators to calculate feeding, foaling, weight, cost, and more..
  • Music
    You can use these calculators to calculate strings, chords, fretboard, neck angle, and more..
  • Rock climbing - Skydiving
    You can use these calculators to calculate canopy size, wing load, shock force, and free fall simulation.
  • Scuba Diving
    You can use these calculators to calculate weight-belt, gas consumption, MOD, SAC, and more..
  • Shooting
    You can use these calculators to calculate paintball trajectory, ballistic coefficient, distance, power, stability, and more..
  • Soap making
    You can use these calculators to calculate water, Sodium Hydroxide, fragrance, lye, cost, recipe, and more..