Prize Land Calculator
(AliExpress Water Game)
Calculate how long you need to water the tree to earn the reward. Works even with a negative water balance.
Frequently Asked Questions
What is the Prize Land Calculator?
It is a free calculator for the AliExpress Prize Land (Water Game). Enter your current tree progress, the progress you gain per watering and how many times you water per day, and it estimates how many waterings and days are left and the date you can expect to finish. It also has a mode for a negative water balance.
How do I find my current tree progress and the progress per watering?
Check the tree progress percentage shown in the Prize Land game. To find the gain per watering, note your progress, water the tree once and note it again. The difference is your progress per watering. The calculator accepts a current progress from 1% to 99.999% and a gain per watering of at least 0.001%.
How is the completion date calculated?
The calculator subtracts your progress from 100% and divides the remainder by the progress per watering, rounding up, to get the number of waterings. It divides that by your waterings per day, rounding up again, to get the number of days, and adds those days to the start date. Example: at 90% progress with 0.5% per watering you need 20 waterings, which is 2 days at 10 waterings per day.
What does negative water mean and how does the calculator handle it?
A negative water balance is caused by a cancelled order (refund). The reason is shown in the Prize Land game inbox. To use this mode, tick “I have a negative water balance”, then enter the negative amount in ml and the water you gain per day. One watering costs 100 ml. The calculator shows how many days it takes for your balance to reach 0 or more (even +1 ml counts as positive), the balance on that day, how many extra waterings it covers and how many ml are still missing for the next watering. It does not calculate when the tree will be finished.
How accurate are the results, and why may my real date differ?
The result is an estimate based on the values you enter, which are treated as constant. Your real date can differ if the progress per watering changes, if you water more or less than planned, or if you skip days. Update your values and recalculate from time to time for a better estimate. If you increase your waterings per day, you can finish sooner than predicted.
Does the calculator guarantee that I will receive the reward?
No. The calculator only estimates when your tree should reach 100% based on the values you enter. Rewards and their availability are decided by AliExpress and may change, so the results are for information only.
Is the calculator free, private and affiliated with AliExpress?
It is free, has no ads and has no affiliation with AliExpress. All calculations run in your browser and the values you enter are not sent to any server.
Does the calculator work on mobile devices?
Yes. The layout adapts to phones and tablets, and on mobile devices the number fields open a numeric keyboard.