Wialon Hosting works with three measurement systems: metric, U.S., and imperial. The corresponding feature could be set for units, resources and users during their creation. Measurement system for routes depends on user settings at the moment of creation.

The system of measurement for the elements which already exist could be changed with the help of conversion. Only the top level managers have the 'Converter' button in the top panel.

The table below provides you with the units of measurement (and their abbreviations) for the systems used:

Metric U.S./Imperial
Mileage (large values) Kilometers (km) Miles (mi)
Mileage (small values) Meters (m) Feet (ft)
Speed Kilometers per hour (km/h) Miles per hour (mph)
Fuel amount Liters (lt) Gallons (gal)
Fuel consumption Liters per 100 kilometers (lt/100 km) Miles per gallon (mpg)
Temperature Degrees Celsius (°С) Degrees Fahrenheit (°F)
Area Square kilometers (km2) or meters (m2) Square miles (mi2) or feet (ft2)
Weight Tons (t) Pounds (lb)

Actually american and imperial systems both use the same units of measurement. The major difference is only in fuel amount calculation. You can find the difference between american and imperial gallon:

1 U.S. gallon ≈ 0.833 Imperial gallon
1 Imperial gallon ≈ 1.201 U.S. gallons

The Converter dialog has the following view:

In the dropdown menu, choose an object type (units, resources, users) over which a conversion will be made. To the right of the dropdown menu there is a brief description of the actions to be made over the objects of a corresponding type.

In the dropdown menu below the object type you choose a conversion pair: from metric into U.S./imperial, from U.S. into metric/imperial, and from imperial into metric/U.S. systems, correspondingly. On the basis of a measurement system from which a conversion is made a list of elements will be formed. For example, if you choose 'Metric ⇒ U.S.', a list of elements currently using the metric system is formed below.

In the list you choose the objects which should be converted. To add these objects for a conversion you should double-click them with the left mouse button or select an object and press 'Add'. The added objects form the list on the right. To remove items from this list double-click them with the left mouse button or select and press 'Remove'. To select multiple items, click on them with the left mouse button holding <ctrl> button pressed on the keyboard. To implement conversion of the added items press OK. Then confirm your actions in the appeared window. Conversion result can be observed in the log.

Conversion Effects

Ideally, users have the same measurement system as resources and units used by them. In this case everything that the user can see during online tracking in different panels and dialogs and also everything that is received by e-mail using jobs and notifications has the same system of measurement.

For Units

If a conversion is made over units, then units' parameters such as trip detector, fuel consumption settings, counters, etc. will be recalculated. This affects units' representation in the tracking system. Changes will affect not only units' properties, but also displaying of their messages, tracks, tooltips and etc.

:!: Note.
A conversion doesn't influence unit sensors. If it is necessary, their measurement system could be changed manually choosing the necessary one in the corresponding dropdown menu.

For Resources

If a conversion is implemented over resources, then some contents of these resources, particularly, POIs, circle-shaped geofences, different settings of jobs and notifications, etc. will be recalculated to the other measurement system.

:!: Note.
Measurement system could be set individually in the section of advanced settings for every report template regardless of the resource it belongs to. Units of measurement chosen for one or another report template are given in the resulting report (whether made online or received according to a job or notification). Neither resource measurement system nor measurement system of a unit is taken into account.

For Users

If a conversion is made over users, then the measurement system for the chosen users will be changed. It will affect different online calculations, particularly the work of such tools as Distance, Area, Routing, Nearest units. Address defining parameters will be recalculated as well.

Besides, a measurement system set for the current user is chosen automatically during creating report templates, units, other users, resources (regardless of who is chosen as creator or in which resource an item is created). Herein, on the stage of the items' creation, a measurement system could be changed manually. It doesn't concern such items as POIs, geofences, jobs and notifications, because their measurement system is taken from a resource they belong to.

For Routes

Conversion made over routes concerns only their checkpoints — their radius.

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