About Instantora

Instantora is a growing collection of free online calculators and decision-making tools. Our focus is on the calculations that matter in everyday life: mortgage repayments, salary after tax, solar payback, electric vehicle running costs and construction projects such as concrete volume.

Every tool is built to be fast, accurate and genuinely useful, so you can move from question to confident answer in seconds, without wading through spreadsheets or complicated software.

There is no account to create and nothing to download. Each calculator runs in your browser, so the figures you enter stay on your device and results update instantly as you adjust them. The tools are designed mobile-first, so they work just as smoothly on a phone as they do on a desktop.

We believe good tools should be transparent. Alongside each calculator you will find plain-language explanations of the formulas and methods we use, so you always understand how a result was reached.

Instantora was built to provide simple and transparent tools for everyday decisions. Whether you are weighing up a home loan, comparing job offers, sizing a solar system, deciding between an electric and a petrol car, or planning a concrete pour, our goal is to give you a clear, trustworthy starting point.

We are continually refining our calculators and adding new ones. Every result is provided for general informational purposes and is not financial, legal or professional advice, so we always recommend confirming important figures with a qualified professional.