Math tools by Sergio Abreu

Dedicated to all students, nerds, geeks, curious people and Math lovers
Ver em Português | Contact
Conversions | Trigonometry | The Rule of 3 | Numeric Systems | Geolocalization | 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

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

Rule of 3 - Play on the white fields:

Topo ⇑
 

 
  10

Numeric Systems

Topo ⇑
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

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

F8 will select all
Result:

Geolocalization

Topo ⇑
{ Graus Minutos Segundos } or { Decimal }

Julian date - Advanced numeric conversion

Topo ⇑

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 Date, only numbers and dot
Formats: 999999 or 99999.9999
 

After Christ Before Christ

 

Electronics

Parallel Resistor association

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

Capacitive reactance

Topo ⇑
Freq: Hz Capacitor: Farad Z:

Inductive reactance

Topo ⇑
Freq: Hz Inductor: Henry Z:

 

2496 visits