How to Estimate a Water Bill
Water bill = base charge + usage x rate per cubic meter. Using Tokyo references (base 1170 JPY, ~220 JPY/m3), 20 m3 costs about 1170 + 20 x 220 = 5570 JPY.
Open the interactive Everyday Lifestyle tool →Formula: bill = base + m3 x rate
Key facts
| Formula | bill = base + m3 x rate |
|---|---|
| Base charge | 1170 JPY |
| Rate | ~220 JPY/m3 |
| 20 m3 | ~5570 JPY |
| 1 m3 | 1000 L |
Frequently asked questions
How much is 20 m3 of water?
About 5570 JPY: base 1170 + 20 x 220 (Tokyo-style reference rates).
How many liters in a cubic meter?
1000 L. So 20 m3 equals 20000 liters.
Why is there a base charge?
Utilities bill a fixed meter/service charge plus a per-volume rate; both are combined here.
Related pages
Water Bill Calculator is part of Everyday Lifestyle on GOAT Lab — a free reference you can use without signing up, and it works offline. Open the tool above for any custom value.
Part of GOAT Lab — 26 free, browser-based science, engineering and developer tools. No sign-up.