Calculate electricity costs
Calculates daily, monthly and yearly costs from a device’s power rating and usage.
Works out what running a single appliance costs — per day, per month and over a year.
- Enter the appliance’s power in watts
- Set how long you use it and your electricity price
- Read off the daily, monthly and yearly cost
It assumes constant power. Appliances that cycle on and off — a fridge or heating, say — use less in practice than their rated figure.
Frequently asked
What does it cost?
Every tool shows its price before you start. Tools marked free run in your browser and never cost anything — no sign-up needed.
What happens if processing fails?
You are not charged. We only charge when a result is actually produced; if the run fails, the charge is reversed.
What happens to my files?
Uploaded files are processed in memory for that one request and then discarded. We do not store them, and their contents never reach our logs or analytics.
Do you use my own API key?
No. Your BYOK key belongs to the Playground and is never used for these tools.