Tyre pressure adjuster

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Tyre pressure adjuster

A pressure in every unit a gauge uses, and what the cold morning does to it.

It runs entirely in this browser tab: nothing you type is uploaded, and it makes no request of any kind.

What it takes

Pressure
In whichever unit the setting says: bar, psi or kilopascals.
Set at (°C)
Optional.
Current temperature (°C)
Optional.
Load level
Each point adds 0.03 bar. Nothing here caps the number — the plate on the door has the laden figure.

An example

pressure = 2.4
set_at = 20
now = -5

Settings

The units
A car's door plate and a garage's gauge often disagree about which one they are in. Choices: {amount} bar, {amount} psi, {amount} kPa.
Work out the loaded pressure
A loaded car wants more, and the figure is on the same plate.

How to use it

  1. Fill in the boxes above. Anything you leave blank the tool works out.
  2. Adjust the settings beside it until the result is what you wanted.
  3. Copy the result, or save it as a file. The result updates as you type.

Questions

Where do the coverage rates and densities come from?
They are the published typical figures — what a tin of emulsion claims, what a cubic metre of dry sand weighs, what a bag of screed covers. They are printed on the result so you can compare them with the bag in front of you, and the bag wins.
Is the ten per cent reserve part of the calculation?
No, and that is why it is a setting. It is a trade convention for breakage and offcuts, and the quantity without it is shown on the same result, so you can order either.
Can I use this instead of a heating engineer or a structural check?
No. A heat loss from six fields is an order of magnitude, not a design: a standard calculation takes every room, orientation and junction separately. The snow tool weighs snow; whether your roof carries it is on its drawings.
Does anything I type here leave the page?
No. There is no account, no server and no network request. What you type stays in this tab, and in the link if you choose to share one.

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