5 free nursing calculators and tools. Solve real-world nursing problems instantly with accurate, step-by-step results on ApexCalc.
| Constant | Symbol | Value |
|---|---|---|
| Speed of light | c | 2.99792458×10⁸ |
| Planck's constant | h | 6.62607015×10⁻³‴ |
| Boltzmann constant | kʙ | 1.380649×10⁻²³ |
| Avogadro's number | Nₐ | 6.02214076×10²³ |
| Gravitational constant | G | 6.6743×10⁻¹¹ |
| Gas constant | R | 8.31446 |
| Elementary charge | e | 1.602176634×10⁻¹⁹ |
| Electron mass | mₑ | 9.1093837015×10⁻³¹ |
| Proton mass | mₚ | 1.67262192369×10⁻²⁷ |
| Fine-structure constant | α | 7.2973525693×10⁻³ |
Calculate intravenous drip rate in mL/hour and drops/minute from ordered volume, time, and drop factor.
Calculate medication doses based on patient weight (mg/kg) or body surface area (mg/m²). Includes max dose checking.
Track 24-hour fluid intake and output to calculate net fluid balance. Classify dehydration and fluid overload.
Calculate Braden Scale score to predict pressure injury risk. Assess sensory perception, moisture, activity, mobility, nutrition, and friction/shear.
Stage pressure injuries per NPUAP/EPUAP classification and estimate healing trajectory from PUSH Tool scores.