Calculator
Cal Box: measure, then calculate
Measure 1.5 V, measure a 10 Ω resistor, and Cal Box suggests Ohm's law: 1.5 V ÷ 10 Ω = 150 mA. Cal Box is free.
iOS and Android, beta this winter.
The readings strip
Above the calculator, a strip shows the live reading, if a meter is connected, and the last 6 captures as chips, for example 1.543 V or 500.0 Ω. Tap a chip to put it into the focused preset input, converted to the input's unit if compatible. Incompatible chips are dimmed. A chip can also go into the expression line.
Ohm's law suggestion
When your last two captures are V and Ω, V and A, or A and Ω, in any order, opening Calc shows a suggestion card, such as "Ohm's law: 1.5 V ÷ 10 Ω = 150 mA", with a Use button.
From the meter screen
A Calc shortcut on the meter screen opens the calculator with the current reading focused. To freeze a value first, see Hold, REL, Min/Max.
Where a value came from
Values carried from readings keep their source link. The history shows, for example, "from capture 14:05:12".
What it does and doesn't do (yet)
| What it does | Plan |
|---|---|
| Cal Box fills the calculator from your live reading and recent captures, and suggests Ohm's law. | Free |
Not yet, or not planned
- Cal Box needs a live or captured reading, so it is in the apps, not on the web.
Questions
When does it suggest Ohm's law?
When your last two captures are V and Ω, V and A, or A and Ω, in any order.
Does it work on the web app?
Cal Box needs a live or captured reading, so it is in the iPhone and Android apps.
Coming to iPhone and Android.
iOS and Android, beta this winter.
Questions or a meter to suggest? Mail support@testnmeasure.app.
No ad networks, no sign-up.