Numerical Values

Index

Comparison of color by color code.

Calculator - plain and easy-to-use.

HTML Color Table    R/G, B   |   R/B, G   |   G/B, R

Correspondence table of UTF-16, a HTML character code, and a character.

[ Absolute coordinate ]   px /  em /  ex /  in /  cm /  mm /  pt /  pc

[ height , width ]   Pixel /  em /  ex /  in /  cm /  mm /  pt /  pc

Permutation  /  Combination

Charts of all 16,777,216 HTML colors

Japanese calendar AD Conversion Table

Index of World's Daylight Saving Time

This page make world clock for exclusive use of oneself.

Gravity of heavenly bodies of the solar system.

Graph of expression.

Trigonometric Function Table

This page calculate three angles and those trigonometric
functions from triangular length of three sides.

Sievert ⇔ Gray Radiation measurement value conversion tool.

Sievert ⇔ Becquerel Radiation measurement value
conversion tool of sake of the safe evaluation.