Finance
Calculate future value of investments with compound interest
future-valueMath & Numbers
Bézout coefficients for any-sign integers with the full division-step table, lcm, and optional linear Diophantine solving (particular + general solution).
extended-euclidean-algorithmMath & Numbers
Solve separable dy/dx = g(x)·h(y) symbolically: H(y) = G(x) + C, explicit inversion, initial conditions, and partial fractions for quadratics like y(1−y).
first-order-ode-solverMath & Numbers
Convert mass flow rate between kg/s (kilograms per second, SI base), lb/h (pounds per hour, 1 lb = 0.45359237 kg), and t/h (tonnes per hour, 1 t = 1000 kg). Converts via kg/s to the target unit and also lists the equivalent value in all three units for reference. Used for boiler feedwater, chemical dosing, fuel consumption, and compressed-gas metering.
flow-rate-mass-converterMath & Numbers
Mean-stress fatigue correction under cyclic loading. Given stress amplitude σ_a, mean stress σ_m, and material σ_uts / σ_-1 (endurance limit) / σ_y, compute safety factors from three classical criteria: Modified Goodman (linear, conservative), Gerber (parabolic, better for ductile metals), and Soderberg (uses σ_y, most conservative). Reports the governing (smallest) value and whether the operating point lies inside the Goodman line.
fatigue-limit-calculatorMath & Numbers
Convert Fahrenheit to Kelvin with configurable decimal precision
fahrenheit-to-kelvinMath & Numbers
Convert feet to yards with configurable decimal precision
feet-to-yardMath & Numbers
Convert feet to miles with configurable decimal precision
feet-to-mileMath & Numbers
Calculate the score needed on a final exam to reach a desired overall course grade
final-grade-calculatorMath & Numbers
Run Fisher exact test for a 2 x 2 contingency table with exact one-sided or two-sided p-values
fisher-exact-test-calculatorMath & Numbers
Calculate F distribution density, cumulative probability, and right-tail probability from numerator and denominator degrees of freedom
f-distribution-calculatorMath & Numbers
Calculate PDF, CDF, survival probability, and interval probability for an exponential distribution
exponential-distribution-calculator