How many watts does a hot tub use?
A hot tub uses 1,500–6,000 W (about 3,500 W on average). Running 4 hours/day, that is about 14.00 kWh a day and 420.0 kWh a month — roughly $77.03 a month at the U.S. average rate of 18.34 ¢/kWh.
This is the hot tub electricity usage reference: watts, amps on a 240 V circuit, the kWh math, and links to what that usage costs in each state.
Watts, amps, and kWh for a hot tub
| Measure | Value |
|---|---|
| Rated wattage range | 1,500–6,000 W |
| Average draw used in our math | 3,500 W |
| Amps at 240 V | 6.3–25 A (15 A at the average draw) |
| kWh per hour | 3.50 kWh |
| kWh per day at 4 hours/day | 14.00 kWh |
| kWh per month | 420.0 kWh |
| Cost per month at the U.S. average (18.34 ¢/kWh) | $77.03 |
The math is kWh = watts × hours ÷ 1000 and amps = watts ÷ volts. A hot tub is normally wired for 240 V in US homes; a 120 V unit of the same wattage would draw twice the amps. For the dollars in your state, open cost to run a hot tub in Texas and switch states from there.
Hot Tub electricity usage profile
| Metric | Value |
|---|---|
| kWh per hour | 3.50 kWh |
| kWh per day (typical) | 14.00 kWh |
| kWh per month (typical) | 420.0 kWh |
| kWh per year (typical) | 5110.0 kWh |
| Low runtime scenario | 2 hours/day |
| High runtime scenario | 6 hours/day |
Connect usage to cost tools
Related appliance usage pages
Source & Method
Source: U.S. Energy Information Administration (EIA) Retail Sales of Electricity. Last dataset period: June 2026. Usage calculations use fixed appliance wattage and runtime assumptions so results stay comparable across pages.
Frequently asked questions
How many watts does a hot tub use?
A hot tub uses 1,500–6,000 W (about 3,500 W on average). Our usage and cost math uses 3,500 watts running 4 hours/day.
How many amps does a hot tub draw?
On a 240 V circuit, 1,500–6,000 W works out to about 6.3–25 A; at the 3,500 W we use in the math that is 15 A.
How much electricity does a hot tub use per month?
About 420.0 kWh a month at 4 hours/day. Lighter use (2 hours/day) comes to roughly 210.0 kWh and heavier use (6 hours/day) roughly 630.0 kWh.
How much does it cost to run a hot tub?
About $77.03 a month at the U.S. average rate of 18.34 ¢/kWh — from roughly $55.06 in Nevada to $221.42 in Hawaii at the same usage. The state cost-to-run pages price it at every state's rate.