How to use coin laundries in Japan

Most Japanese coin laundries are fully automated and use integrated washer-dryer units that handle the entire cycle without you needing to add detergent. Simply load your clothes, insert coins, and select your cycle to have clean, dry laundry in about 60 to 90 minutes.

1. Check the machine type. Look for machines labeled 'Washer/Dryer' (sentaku-kanso-ki). These are your best bet. If you use a standalone washer, you will need to move your wet clothes to a separate dryer unit after the wash cycle ends.
2. Load your laundry. Do not overstuff the drum. Aim for 70% capacity to ensure the clothes tumble properly and dry completely. Close the door firmly until it clicks.
3. Add detergent (if needed). Check the machine's display. Most modern Japanese laundromats automatically dispense detergent during the cycle. If you see a dedicated detergent tray, check if it's empty—if it is, you'll need to buy a single-use packet from the machine's vending area.
4. Select your cycle and pay. Choose your desired program (Standard is usually fine). Most machines accept 100-yen coins. Insert the required amount; the timer on the display will show how long the cycle takes.
5. Retrieve your clothes. The machine will beep when finished. If you don't return promptly, some machines charge a small fee for 'holding' your clothes or prevent others from using the unit.

Do I need to bring my own soap?

Almost never. 99% of coin laundries in Japan automatically dispense detergent and fabric softener.

Will the machines accept credit cards?

Some newer, high-end laundromats in Tokyo accept IC cards (Suica/Pasmo), but 90% of machines still strictly require 100-yen coins.

Is there an English interface?

Many modern machines now have an 'English' button on the touchscreen. If not, look for the 'Start' button which is usually labeled in English or highlighted in green.