Guide to Choosing the right step-down transformer
Please use our handy Step-down calculator to determine the correct rating of Stepdown Transformer (please wait for it to load.)
If you know the Watts of your device simply add in the Input Watts W of your device and press enter on keyboard.
If you know the Amps of your device , please put in the Input Amps A and Volts V and press the Update button below.
Note if you device has a motor tick the motor Box
Note: 120v , 115v , 110v for USA devices, 100v for Japan, 220v for Europe
You can also see our handy guide table at the bottom of the page with many USA devices makes and models and the common stepdowns recommended.
Watch Video - choosing the right stepdown transformer:
Please Check these important 5 questions before purchasing your step down transformer:
1. What is the total watts used by appliances to be connected to the Transformer?
Select from our Step downs transformers based on how many watts your device uses.
Choose the transformer rated above your devices watts usage.
E.g: Playstation 3 uses 380 Watts so you need the 500 watt rated stepdown transformer.
2. Does your appliance have a motor ?
If a motor is included then you should select a stepdown rating approx 25% higher than your motor as a buffer.
Motors have a higher power use on the stepdowns and startup currents which need to be allowed for.
Most motors have a rating plate on them with their Power and Amperage rating.
3. Does your appliance have a mechanical timing device?
If so, how critical is this timing device?The Transformer cannot change the Frequency. It is 50Hz
If a timing device is included the speed of the device may change due to the frequency change, 60Hz to 50Hz (eg old clocks, motors / fans/microwaves ) Most modern electronic devices should not be affected. Read more about frequency
Running a 5200 Vitamix on our stepdown:
| 4. Do you know the Amps of your device? - is so you can calculate the watts required:
Calculated as Watts = Amps x 110Volts (eg 5 A x 110 V = 550 watts)
5. Do you wish to use multiple appliances from one stepdown?
Check total watts of all devices this must be less than the VA (Watt) rating of the stepdown & get a US Powerboard.
Still Not sure which Stepdown you will need? see our detailed guide table at the bottom of this page
You may also contact us with your reply to above questions & we will advise the unit that is required.
Note: Always look at the INPUT POWER rating - often underneath the bottom of your product on a spec label.
USA Equipment is identified as 110v, 115v , 120v (requires a USA stepdown)
Japan 100V (requires a Japan stepdown ) or 110V
European 220v (requires a Euro stepdown)
Wattage - you need to check the Input Power Rating label on their Product for the Watts (W) or the Amps (A) figures.If you see the HP (horse power) for a motor multiply it be 746 for watts then add 25% for motor.
See here for answers to other common questions.
Running a US amplifier from our 100w stepdown transformer
If you can't find the power details in the manual the most accurate way is to look at the spec label under your USA appliance to identify the Input Watts or Amps:
Label under the Kitchen aid (or in the manual)
Specs at the back of a US Playstation 3 (not slim):
On Your Cordless / Fast Charger
look at the power specs on the charger base:
Vitamix - Look at the Amps A behind the machine:
Dyson (Look under the Vacuum cleaner):
Appliances with power supply units
look at the power supply label Eg: XBOX
The Following is a General Guide to Products and their Power requirements and which Stepdown is needed.
Note: this is A General Guide Only and you should always check your particular device input amps or watts.
|Products||Stepdown Transformer commonly needed|
NES: 9 watts
Clock radio 4 watts
Desktop PC 380-600watts
Playstation 4 2.1A, or 252W maximum.
Xbox 360 Elite (2007): 185 watts
|300- 500w stepdown|
|Brother Sewing Machines||100w Stepdown|
|Small electronics ipods/mobiles etc 50-250watts||100w stepdown|
|Amplifiers / Home theatre systems||500-1000w stepdown|
|Hair Straightners||1000 - 1500w|
|Hair Dryers||1500- 2000W|
|Drills - Makita , Dewalt||300 w stepdown (because faster charger draws alot of current)|
Nutribullet Pro 900 Series 900W motor
Nutri Ninja BL480 1000w
|Laptops and PCs 200-500W||500 w stepdown|
Cuisinart PowerEdge 1000 Watt Blender. CBT-100
All Artisans series use the 500w stepdown transformer
Most of the professional series need 1000w stepdown transformer
New Kitchen aid 7 Quart Stand Mixer series
KSM7990WH 1.3 hp motor (Max 1212) watts
7 Series Quart Mixers need the 1500w stepdown
KitchenAid Food Processors:
KFPM770 KFPM750 KFP0711 KFP1333ER KFPW760OB KFP0922CU
KSM7990WH has a 1.3 hp DC motor = 969w + 25% for motor = 1212 watt max - needs 1500w stepdown
| 1000w stepdown transformer
|4-slot Toaster 1440 watts||1500w stepdown|
Jiffy Steam mops 2000J Steamers 1500W+(1300w)
|1500- 2000W stepdown|
| Vacuums ~1500 -2000 watts
The Dyson DC39 Allergy uses 11amps - can use 1500w stepdown.
Most other Dyson models consume about 12amps
12 x 110 = 1320 + 25% (motor startup) = max 1650 watts best use the 2000w stepdown
2000w stepdown needed for models :DC 41 Animal Complete DC 41 Animal DC 40 Multi floor DC 33 Multi floor
DC 28 Animal DC 25 Multi Floor DC 24 Animal 12 Amps DC 24 Multi Floor
|2000 W stepdown|
|Expresso Maker 900- 1400 watts||1000- 1500w stepdown|
| VitaMix Blenders
All have powerful motors need to add 25% to watts to account for startup surge
Vitamix 5200 11.5 ampsx 110 + 25% = max 1581 watts
Vitamix 500 Blender Specs: 120Volts, 60HZ, 11.5 Amps = max 1581 watts
VitaMix Pro 750 Specs: 120Volts, 60HZ, 12 Amps = max 1718 watts
Vitamix 7500 : 1,440-watt, 2.2 hp
Pro 300 120Volts, 60HZ, 12 Amps = max 1718 watts
Vita-Mix® Professional CIA Series & Pro 200 Blenders 120Volts, 60HZ, 11.5 Amps (~1400 Watts)
Vita Prep 3 new models
(although it says 12.5 amp Not true max power! 3HP motor 3 x 746w = 2238w
| Artograph Super Prism Projectors ( 2 bulbs)
|Most treadmills (up to 15 amps) over 15 amps||2000w stepdown 2400w stepdown|
Drop saw /circular saws
|1500- 2000W stepdown|