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Practical Web Tools - Convert files & chat with AI — fully offline | Product Hunt

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Privacy-first file conversion and AI chat. No accounts, no uploads, no tracking.

Energy Converter

Free, instant energy conversions between J, kJ, cal, kcal, Wh, kWh, BTU — exact factors, no signup, calculated privately in your browser.

  • Joules to Kilojoules
  • Joules to Calories
  • Joules to Kilocalories
  • Joules to Watt-hours
  • Joules to Kilowatt-hours
  • Joules to BTU
  • Kilojoules to Joules
  • Kilojoules to Calories
  • Kilojoules to Kilocalories
  • Kilojoules to Watt-hours
  • Kilojoules to Kilowatt-hours
  • Kilojoules to BTU
  • Calories to Joules
  • Calories to Kilojoules
  • Calories to Kilocalories
  • Calories to Watt-hours
  • Calories to Kilowatt-hours
  • Calories to BTU
  • Kilocalories to Joules
  • Kilocalories to Kilojoules
  • Kilocalories to Calories
  • Kilocalories to Watt-hours
  • Kilocalories to Kilowatt-hours
  • Kilocalories to BTU
  • Watt-hours to Joules
  • Watt-hours to Kilojoules
  • Watt-hours to Calories
  • Watt-hours to Kilocalories
  • Watt-hours to Kilowatt-hours
  • Watt-hours to BTU
  • Kilowatt-hours to Joules
  • Kilowatt-hours to Kilojoules
  • Kilowatt-hours to Calories
  • Kilowatt-hours to Kilocalories
  • Kilowatt-hours to Watt-hours
  • Kilowatt-hours to BTU
  • BTU to Joules
  • BTU to Kilojoules
  • BTU to Calories
  • BTU to Kilocalories
  • BTU to Watt-hours
  • BTU to Kilowatt-hours