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Use the Berg Balance Test calculator to assess dynamic and static balance and the risk of falls.
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This free pressure conversion tool converts atmospheric pressure units such as atm, technical atmosphere, bar, kPa, mmHg, and more in one interface. You can enter a value once and see many equivalent units at the same time. It is web-based and accessible without a mandatory subscription.
BikeCalc provides a dedicated cadence calculator/table where you set chainring, sprocket, tire thickness, rim diameter, and speed to analyze cadence outcomes. The page includes step-by-step instructions and interactive parameter controls. It is available on the web with a free access option.
The attenuation calculator is labeled for measuring decibel changes in voltage and includes input/output voltage fields. It also shows the voltage-based attenuation formula using 20·log10(Vin/Vout). ([quickminitools.com](https://quickminitools.com/physics/attenuation-calculator))
This battery charging calculator estimates charge current, C-rate, charging time, and energy using battery capacity, voltage, chemistry, and SoC targets. It is oriented toward practical IEC/IEEE-style engineering estimates and includes taper/efficiency options. The tool is freely accessible without mandatory paid access.
QxMD includes a BASDAI calculator that asks the canonical six BASDAI disease activity questions and computes the standardized score. The page includes formula context and references for clinical use. QxMD’s calculator access is generally offered free to users on web/app, without a mandatory paid subscription for this tool.
Its pressure converter lets you select bar as the source unit and standard atmosphere (atm) as the target unit. The tool supports a very large list of pressure units for broader stress/pressure conversions. Usage is free and does not require a paid account.