Math tools by Sergio Abreu

Dedicated to all students, nerds, geeks, curious people and Math lovers
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Conversions | Trigonometry | The Rule of three | Numeric Systems | Free Expressions | Julian date

Electronics:

Parallel Resistor association | Capacitive reactance | Inductive reactance

Conversions

Temperature Pressure Currency


77 


2.0689 
Length/Distance Weight/Mass


6.24 


22.05 

Trigonometry

Degrees (0 ~ 360)
Sen 0,866
Cos 0,500
Tan 1,732

The Rule of three

 

 
  10

Numeric Systems

Número
Dec 10
Bin 1010
Oct 12
Hex A
Computing
1 KB = 1024 2^10
1 MB = 1048576 2^20
1 GB = 1073741824 2^30
1 TB = 1099511627776 2^40

Free Expressions

Tip: The simbol ^ is XOR. For power, use Math.pow(base, power)

F8 will select all
Result:

Julian date - Advanced numeric conversion

The astronomy time measure, counts the days and its fractions since January 1, 4713 BC Greenwich noon.
Choose one of the fields, follow the format while inputing.

Gregorian Date
Format: y-m-d h:min:seg
Julian Day, only numbers
Formats: 999999 or 99999.9999
 

After Christ Before Christ

 

Electronics

Parallel Resistor association

Use only digits, DOT and optionally the letters K and M if needed
R1: R2: Result:

Capacitive reactance

Freq: Hz Capacitor: Farad Z:

Inductive reactance

Freq: Hz Inductor: Henry Z:

 

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