About DoseConvert

Every formula on the site is implemented once, in a single library, and every page reads from it. The worked examples printed in the prose are generated by that same library rather than typed in, so a page cannot quietly disagree with the calculator sitting above it.

That library has an automated test suite covering every formula, including the edge cases: units that do not match, a strength of zero, a volume too small to measure, a dose above a stated maximum. Expected values were worked independently from the published equations before the code was written, so a test passing means the implementation agrees with the source rather than with itself.

Where a formula is named after the people who derived it, the citation and a link to the paper appear under the result and again on the formulas page.

Every calculator prints the formula, the numbers put into it and the result of each step. A figure you cannot check is a figure you have to trust, and there is no reason to ask for that when the working fits on the same screen.

The mg to mL calculator goes a step further and draws the answer in a syringe, because 0.4 mL and 4 mL read almost identically as text and look nothing alike in a barrel.

It works out arithmetic. It does not decide what dose is appropriate, check that an order is safe, know what product you are holding, or replace the summary of product characteristics, local policy or a pharmacist.

Several calculators need a figure read off a label or a protocol, and the site has no way to verify that the figure entered is the right one. Where a choice materially changes the answer, such as which body weight a renal estimate runs on, the calculator asks rather than picking for you, and prints what it used.

Everything runs in your browser. Nothing you type is sent anywhere, stored or logged. Where a calculator writes its inputs into the address bar, that is so a result can be shared or bookmarked, and it stays in your browser unless you copy the link yourself. The privacy page has the detail.

The site is free to use and has no accounts.