Current Subject: Calculators & Unit Converters

Calculators On-line Center (Martindale Reference Desk) - Annotated links to calculators and converters in virtually every measurable subject. Multilingual.

Conversion & Calculator Center (Entisoft) - Conversion tools for length, mass, speed and temperature. Calculators for finance, math, calendars, currency exchange, geography and general science.

WWW Unit Converter - Converts area, bits & bytes, density, energy, force, length, mass, power, pressure, speed, temperature and volume. Also includes the 1976 Standard Atmosphere Calculator for computing density, temperature, air pressure.