---
title: "Free Energy Tools & Calculators: Online Utilities | ShoutingNow"
description: Convert joules, calories, kilowatt-hours, BTU, watts, amps, and related energy units.
url: "https://shoutingnow.com/tools/category/science-conversion-calculators/unit-energy/"
image: "https://shoutingnow.com/wp-content/uploads/2026/07/shoutingnow-preview-scaled.webp"
---

# Energy

Convert joules, calories, kilowatt-hours, BTU, watts, amps, and related energy units. Open any card to start calculating instantly, then explore related converters and guides for the full workflow.

## Items
- [Energy Converter](https://shoutingnow.com/tools/energy-converter/)
  Move between joules, calories, kilowatt-hours, BTU, therms, and electronvolts in seconds, whether you're tackling science homework, an engineering estimate, or…
- [Newton Meters to Inch Pounds Converter](https://shoutingnow.com/tools/newton-meters-to-inch-pounds-converter/)
  Turn newton-meters into inch-pounds in one click, with a clean two-column layout, accurate formulas, and related conversion links, all free and running right i…
- [Amps to Watts Converter](https://shoutingnow.com/tools/amps-to-watts-converter/)
  Turn amps into watts in one click, with a clean two-column layout, accurate formulas, and related conversion links, all free and running right in your browser.
- [Hertz to Seconds Converter](https://shoutingnow.com/tools/hertz-to-seconds-converter/)
  Turn hertz into seconds in one click, with a clean two-column layout, accurate formulas, and related conversion links, all free and running right in your brows…
- [Lumens to Watts Converter](https://shoutingnow.com/tools/lumens-to-watts-converter/)
  Turn lumens into watts in one click, with a clean two-column layout, accurate formulas, and related conversion links, all free and running right in your browse…
- [Watts to Amps Converter](https://shoutingnow.com/tools/watts-to-amps-converter/)
  Turn watts into amps in one click, with a clean two-column layout, accurate formulas, and related conversion links, all free and running right in your browser.

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