curl --request POST \
  --url https://api.iotools.cloud/v1/tool/kinetic-energy-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "solveFor": "energy",
  "energy": "9",
  "energyUnit": "j",
  "mass": "2",
  "massUnit": "kg",
  "velocity": "3",
  "velocityUnit": "ms"
}
'

{
  "tool": "kinetic-energy-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "quantity": "Kinetic Energy",
        "value": "9 J (joules)",
        "other-units": "0.009 kJ (kilojoules) · 0.000009 MJ (megajoules) · 2.15105 cal (calories) · 0.00215105 kcal (kilocalories) · 0.0025 Wh (watt-hours) · 0.0000025 kWh (kilowatt-hours) · 56173600000000000000 eV (electronvolts) · 0.00853035 BTU · 6.63806 ft·lb (foot-pounds)"
      },
      {
        "quantity": "Mass",
        "value": "2 kg (kilograms)",
        "other-units": "2000 g (grams) · 2000000 mg (milligrams) · 4.40925 lb (pounds) · 70.5479 oz (ounces) · 0.002 t (metric tons) · 0.00220462 US ton (short ton)"
      },
      {
        "quantity": "Velocity",
        "value": "3 m/s (meters per second)",
        "other-units": "10.8 km/h (kilometers per hour) · 6.71081 mph (miles per hour) · 9.84252 ft/s (feet per second) · 5.83153 knot (nautical miles per hour)"
      }
    ],
    "breakdown": "Solving for: Kinetic Energy\nenergy = ½ × mass × velocity²\nenergy = 9 J\nmass = 2 kg\nvelocity = 3 m/s"
  },
  "credits_used": 5,
  "credits_remaining": null
}