Alternatives

Products that do what WattWise does

Free calculators to estimate electricity costs

1. 1
   HowMuchWatts▲5

   50 free calculators for home energy costs & savings

   Jul 2026 · howmuchwatts.com

2. 2TD
   Terminal dashboard that throttles my PC during peak electricity rates▲98

   WattWise is a CLI tool that monitors my workstation’s power draw using a smart plug and automatically throttles the CPU & GPUs during expensive Time-of-Use electricity periods. Built with Python, uses PID controllers for smooth transitions between power states. Works with TP-Link Kasa plugs and Home Assistant.

   2025 · naveen.ing

3. 3
   PickMyWatt▲2

   watt caclulator for you buy suggestion

   11d ago · pickmywatt.com

4. 4
   Energy Calculators▲5

   Smart tools to calculate, compare ,optimize your power usage

   Nov 2025

5. 5
   Unitor▲114

   Quickly compare unit prices while shopping smarter.

   2025

6. 6
   CalcWise▲2

   Online Calculators Save

   May 2026 · calcwise.online

7. 7
   Wattcrunch▲2

   Know your solar numbers before you call an installer

   Jun 2026 · wattcrunch.tech

8. 8
   Units Converter▲16

   calutalor tht every one need

   Jul 2026 · unitsconverter.in

9. 9
   Solar Panel Calculator▲3

   Estimate solar costs, savings and payback in minutes

   Jul 2026 · sunmetriclab.com

10. 10
    LCOE Calculator with Comparison tools▲8

    Calculator with complete guide -

    Oct 2025

11. 11
    Solar Savings Calculator▲6

    Quickly estimate how much you can save on energy bills

    Sep 2025

12. 12
    KilowattKit▲1

    Free home energy calculators — no signup needed

    May 2026 · kilowattkit.com

13. 13
    Global Energy Calc▲1

    Free home electricity cost & energy bill estimator

    13d ago · proenergysaver.app

14. 14
    Today Calculator▲7

    Free online calculators for everyday use

    Sep 2025

15. 15
    Generator Fixer▲1

    Calculate Generator Size Instantly for Any Appliance

    Mar 2026 · generatorfixer.com

16. 16
    MeasureShed▲2

    Measure it. Price it. Build it.

    Jul 2026 · measureshed.com

17. 17
    Calculator.Free▲8

    200+ Free Calculators

    Jul 2026 · calculator.free

18. 18
    DIY Cost Calculator▲1

    Free DIY and home improvement cost calculators

    Jul 2026 · diycostcalculator.com

19. 19
    Noon Labs — Energy Intelligence

    Free energy cost calculator for Australian homes & SMEs

    Apr 2026 · noonlabs.tech

20. 20
    WattSized▲2

    What size power station do you actually need?

    Jul 2026

21. 21
    Global Electricity Bill Calculator▲2

    Calculate electricity bills with slab, TOU & global tariffs

    Apr 2026 · dipuja.com

22. 22
    HeatWise HVAC▲6

    Load calculations for professionals

    Sep 2025

23. 23
    Universal Unit Converter▲6

    Simple, fast, and free unit converter for everyday use

    Jan 2026 · units.ashwinig.com

24. 24
    FreeWWW Calculator▲6

    Simple, fast, and free calculator for everyday use.

    Nov 2025

Ranked by how close each launch is in meaning, then by votes. Refine with a description →