Wi-Fi Router Running Cost Calculator
Typical draw about 15 W. Enter your hours and rate to estimate the monthly and yearly running cost.
WattCost runs every calculation in your browser — your usage and rates never leave this page.Try: Power (watts)=15, Hours per day=3, Days per month=30, Electricity rate=0.15 → 1.35 kWh, $0.20, $2.43
How to use
Enter the wattage (pre-filled to about 15 W, the typical draw for a Wi-Fi Router), set how many hours per day it runs, and add your electricity rate. WattCost multiplies watts ÷ 1000 × hours × days to get kWh, then multiplies by your rate for the cost.
Always-on but tiny draw; the real cost is leaving the modem on too.
FAQ
How much does it cost to run a Wi-Fi Router per month?
At about 15 W, with 3 hours a day at $0.15/kWh, a Wi-Fi Router costs roughly $0.20 per month. Your real number depends on how many hours you use it and your local rate — enter your own figures for an exact estimate.
Does a Wi-Fi Router use power when it is off?
Most devices draw a small standby load. Unplug the Wi-Fi Router or put it on a switched outlet to stop the trickle when it is not in use.
How can I lower my Wi-Fi Router running cost?
Always-on but tiny draw; the real cost is leaving the modem on too. You can also shop your electricity rate — even a small drop per kWh lowers every appliance on this site.