toolmallow.

Make it local

Choose defaults for supported calculators. You can mix a region, units and currency.

Changing units converts supported measurements. Changing currency relabels amounts; it does not exchange money. Tax rules, tariffs and broker rates remain your inputs.

Only these preferences are saved in this browser. Calculator inputs are not saved.
EXPLORE / ENERGY & COSTS

Energy & costs

Understand the bill behind the watts.

Explore appliance running costs and EV charging with your own tariff and explicit consumption assumptions.

A useful place to start

  1. Choose the tool for the specific task you are planning.

  2. Check the units and replace example figures with relevant inputs.

  3. Review the assumptions, supporting values and linked guide before acting.

THE TOOLKIT

Choose the right tool for the job.

2 tools · Local processing
IN PRACTICE

Connect the steps.

A battery top-up and the electricity purchased at the socket can differ. Keep battery-side energy, wall energy and tariff terms separate.

GO A LITTLE DEEPER

Guides for the next step.

All guides ↗

Know the limits.

Fixed charges, time-of-use tariffs, taxes and public charging fees are not automatically included. These are scenarios, not bills.

How we explain methods and sources →

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