Rootwise (zjhbxf.com) is a small set of free tools that turn "work it out by hand again, then go looking it up again" into "fill in a few boxes, press one button". The site currently holds 22 tools. The site is about: Plant care without the fluff. Everything runs in your browser: no sign-up, no login, nothing you type is uploaded.
Three groups, mostly. First, people who already have the numbers and simply do not want to re-key them into a calculator every time - someone drafting a budget, or an operator who needs a rough figure to align with a colleague in the next ten minutes. Second, people preparing for an exam, an interview, an application, or a document they have to submit, who want a way to test "what if I change this number". Third, teachers, coaches, and leads who need to explain a rule of thumb rather than hand over an answer.
Whatever group you are in, the position of this site is the same: it puts the reasoning in front of you instead of making the decision for you. What a tool returns is a reference value computed from the inputs you supplied. Before you act on it, you still check it against the source material, the situation on the ground, or the official guidance.
Every tool has an explicit, reproducible method: what goes in, what formula is applied, what comes out. The logic is not hidden - the full calculation is visible in the page source. That buys two things. The result can be checked by somebody else, and if you think a number is wrong you can follow the formula to the step whose assumption does not hold, instead of choosing between trusting it and not trusting it.
Because all of it runs locally, the amounts, durations and ratios you type never leave the device. That matters most for the inputs that describe your own situation.
Every page has a floor it has to clear: enough body copy that it is not just a form with a button; at least four questions answered, with the three things that actually decide whether a tool is used well written down - how to use it, where people go wrong, and when it does not apply. Where a page states a specific number, a price, a fee or a rule, it says "check the official source" and gives you a route to check it yourself, rather than inventing a number that looks plausible.
Instructions, the verdict labels and the computed result are kept separate. Instructions tell you how to use the tool, the labels qualify what the number means, and the result is the number. Mixing those three is how a conclusion drawn under one set of conditions quietly turns into a general rule, and it is a mistake we keep going back and fixing.
It does not give medical diagnoses, medication doses, legal opinions or investment advice. The tools help you frame a question better or get the arithmetic right; the conclusion still comes from a qualified professional or from the official source. For outdoor, diving, wildlife, protected-area and border situations, the site provides safety checklists and official contacts only - it does not provide decompression tables, does not certify any depth or weather as safe, and does not explain how to work around regulations.
Tool pages get reviewed: does the logic still hold, is the reference data still current, are the stated limits still true. When the premises of a tool change, the wording on the page changes too, rather than leaving a stale conclusion in place. If a page does not match what you are seeing in practice, the contact details in the footer are the way to tell us.
Plant care without the fluff. - index.html - 22+ free plant care calculators and original articles for indoor and outdoor gardeners. Diagnose yellowing leaves, calculate VPD, plan vacat
This page describes what the tools on this site are built to do. A common mistake is to read a short explanation and treat it as an official specification —it is not. Every tool here is a calculation aid: it works from the numbers you type in, and it cannot verify whether those numbers are correct, current, or appropriate for your situation.
Where this stops: the tools give you a number and the reasoning behind it. They do not replace professional advice, and they do not know anything about your specific case. Where a decision carries legal, financial, safety or health consequences, check the relevant official source before acting on anything you read here.