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Density of oil
Recalculation of the density of oil for different temperature and pressure values. Formulas are taken from Russia's GOST R 8.610-2004. "State system for ensuring the uniformity of measurements for the density of oil. The tables for recalculation" standard
Derivative
It finds one variable function derivative. Step by step differentiation solution is also provided.
Derivative of a function raised to the power of itself
A function is raised to a degree of itself a given number of times and then the derivative is taken.
Determinant by Gaussian elimination
Finding matrix determinant using Gaussian elimination in complex, rational or real numbers.
Determinant of 3x3 matrices
This calculator calculates the determinant of 3x3 matrices
Determination of the baby's sex
It's unscientific, but it surprisingly works.
Determining air humidity with the psychrometric method
This calculator determines air humidity using psychrometric method with two thermometers.
Dew Point Calculator
This calculator determines the dew point from a given temperature and relative humidity of the air.
Digital image size in pixels and photo print size
This article is about the relation between an image size in pixels and a photographic print size. First, it recommends the photographic print size for given digital image dimensions in pixels. Second, it finds the resulting pixels per inch value for a printed digital image with known linear and pixel dimensions.
Digital images parameters comparison
The calculator allows you to compare the parameters of different photographs saved in EXIF image data.
Dilution calculator and problems solver
This online calculator can calculate the molar concentration (molarity) of a solute or volume of a solution before or after the dilution.
Dilution of solutions
This online calculator allows you to find one of four parameters: volume before dilution, molar concentration before dilution, volume after dilution, molar concentration after dilution - based on the other three. It is intended for solving problems on dilution of solutions.
Direct measurement error analysis
Calculates error of direct measurements for given measured value series and confidence interval.
Discount calculator
This online calculator finds the discount from the sale price and the usual price, the sale price from the discount and the usual price and the usual price from the sale price and the discount
Display aspect ratio and dimensions
This online calculator finds screen dimensions - height, width and area, given the diagonal value and aspect ratio.
Distance between two cities
This online calculator measures the distance between two cities using latitude and longitude.
Distance Calculator
Calculate the distance between two geographic coordinates using the Haversine formula.
Distance Cost Calculator
This calculator calculates the cost of travel by multiplying the distance traveled in kilometers (or miles) by the rate per kilometer (or mile).
Distance through the Earth
This calculator calculates the distance from one point on the Earth to another point, going through the Earth, instead of going across the surface.
Distinct degree factorization
The calculator finds distinct degree factors of a polynomial in finite field
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