PHYSICAL CONSTANTS

Absolute zero
-273.16 °C

Acceleration of free fall, standard
9.806 65 m/s²

Atomic mass unit
1.660 538 782×10^-27 kg

Avogadro constant
6.022 141 79×10²³ 1/mol

Base of natural logarithms
2.718 281 828 459...

Boltzmann constant
1.380 6504×10^-23 J/K

Classical electron radius
2.817 940 2894×10^-15 m

Electron mass
9.109 382 15×10^-31 kg

Electron-proton mass ratio
5.446 170 2177×10^-4

Electronvolt
1.602 176 487×10^-19 J

Elementary charge
1.602 176 487×10^-19 C

Faraday constant
96 485.3399 C/mol

First radiation constant
3.741 771 18×10^-16 W m²

Molar gas constant
8.314 472 J/mol K

Molar volume
(Ideal gas, T = 273.15 K, p = 101.325 kPa)
22.413 996×10^-3 m³/mol

Newtonian constant of gravitation
6.674 28×10^-11 N m²/kg²

Permeability of vacuum
12.566 370 614...×10^-7 N/A²

Permittivity of vacuum
8.854 187 817...×10^-12 F/m

PI
3.141 592 653 589 793 238...

Planck constants
6.626 068 96×10^-34 J s

Second radiation constant
0.014 387 752 m K

Solar constant
1366 W/m²

Speed of light in vacuum
299 792 458 m/s

Speed of sound in air at STP
331.5 + 0.6 * T/°C m/s

Standard pressure
101 325 Pa

SCIENTIFIC CALCULATOR FOR CHEMISTS

Calc4Chem is a JavaScript scientific calculator for chemists. This calculator can be used as common scientific calculator (sin, cos, log, power, root, memory), but it also includes a molecular weight calculator and the tables with various physical and chemical constants. The calculator contains a list with task history, storing all the recent inputs and results. Scientific calculator displays the numbers rounded to a user-specified number of decimal places. (How to use a Scientific calculator)

Online calculators

Preparation of solutions

Balancing redox reactions

Online games

Portable applications

Calculator for Chemists: is a small but powerful scientific expression calculator which supports many scientific functions (sin, cos, log, power, root, memory, ...), normal and inverse. All of the calculations can be printed or saved and recalled again.
Solution Calculator: is a useful tool which allows you to calculate how many solid chemicals or stock solutions you will need to prepare the desired solution. The program provides lab-ready directions on how to prepare the desired solution.
Unit & Number Converter: is a program that will convert most popular units of length, mass, volume, temperature, pressure, energy and many others. It also includes the ability to create custom conversions for anything you want (you can create your own custom units). This simple tool allows you to convert the number from one numeral system into another (for example, from binary into decimal or Roman numeral system).

Back to top ↑

Citing this page:

Generalic, Eni. "Scientific calculator for chemists." EniG. Periodic Table of the Elements. KTF-Split, 18 Jan. 2024. Web. {Date of access}. <https://www.periodni.com/scientific_calculator.html>.