cactus2000 Deutsch Français
Cactus2000  About  Data protection  Email

Logarithms

To the desktop version
value

log2
loge = ln
log10 = lg

logb1
 b1 

logb2
 b2 



Rounding: significant digits.
Decimal sign:

This is a calculator for logarithms. For a given value the logarithms to the base 2, e, and 10 as well as to an arbitrary base b1 are calculated. You may also type in the logarithm to calculate the value. If you know the value and its logarithm you may calculate the corresponding base b2.

Usage: Type the known number into the corresponding input field. After a mouse click on any free space of the window or on the "calculate"-button the calculation is performed. All results are shown. Move the mouse over a short name or click on it to read the full name.
At the start the dark input fields show the numbers "16" for the base b1 and "2" for the logarithm to the base b2 that will be calculated. These values may be changed when needed. After a mouse click on any free space of the window or on the "calculate"-button the calculation is performed with the new values.
In the case that "2" is given for the logarithm to the base b2, the value is the square of the base b2, or the base is the square root of the value, respectively. In this way this calculator may be used for root and potential calculations.

Example: What is the natural logarithm of the number 10000 ? Type "10000" into the input field for the value. After a mouse click on any free space of the window or on the "calculate"-button you can read the result (ln(10000) = 9.2103).
As another result you can see that for example the decadic logarithm of this number is "4". When the logarithm to the base b2 is set to "2", you can also read the square root of 10000 (this result is 100).

Remarks:
- Please note the remarks about the representation of numbers..
- There is no warranty for the calculation. Cactus2000 is not responsible for damage of any kind caused by wrong results.
- Please send an email if you have suggestions or if you would like to see more conversions to be included.

© Bernd Krüger, 26.11.2007, 15.08.2022

Unit converters
Overview

Topics:
Physics (A-F)
Physics (G-P)
Physics (R-W)
Chemistry
Meteorology
Date and time
Geometry
Money
Miscellaneous



Conjugation tables (verbs)
English
French
German
Italian
Latin
Portuguese
Romanian
Spanish
Dutch
Nouns (declension)
German
Latin
Adjectives (declension)
French
German
Italian
Latin
Spanish
Conjugation trainers
French
German
Italian
Latin
Spanish
Declension trainer
French (adjectives)
• Latin: adjectives - nouns - pronouns
Written numerals
English
French
German
Italian
Latin
Spanish

Also online:

Unit converters
Bicycle tours
Car plates
Small travel vocabulary (pdf)
Time of sunset

Entertainment
Geography quiz
Quiz of countries
Quiz of rivers and towns
Quiz of flags, arms, and coins
Quiz of towns and countries
Animal quiz
Brain training
Find the difference
Math trainer
Puzzle
Galleries


New theme in the
Cactus2000-Brain-Training:
Saint-Mathieu
Lighthouses

with gallery

Dollar
Euro

Bernd Krüger, 2022
Cactus2000