Calculate the maximum bending moment M_max, maximum shear force V_max and free-end deflection δ_max of a cantilever beam under a free-end point load P or a uniformly distributed load q. Point load: δ = PL³/(3EI); UDL: δ = qL⁴/(8EI).

Math & Numbers

Concrete Mix Design (ACI 211)

Design a normal-weight concrete mix per ACI 211.1-91 absolute-volume method. Inputs: slump, nominal max aggregate size, air entrainment, water-cement ratio w/c, fineness modulus of sand, and dry-rodded coarse-aggregate density. Outputs the per-cubic-meter masses of cement, water, fine and coarse aggregate plus the mass ratio.

Math & Numbers

Cam Follower Displacement Calculator

Calculate the follower displacement, velocity coefficient, acceleration coefficient and pressure angle during the cam rise phase. Supports constant-velocity, constant-acceleration, harmonic (SHM) and cycloidal motion laws.

Math & Numbers

Bolt Torque Clamp Force Calculator

Convert between bolt tightening torque and axial clamp force. T = K·F·d, where K is the nut factor (~0.20 for dry steel). Solve torque from force, or force from torque.

Math & Numbers

Chain Sprocket Ratio Calculator

Calculate the ratio, driven speed and chain linear speed of a chain drive. i = z₂/z₁ = n₁/n₂, chain speed v = z₁·p·n₁/60000. Enter the pitch to compute chain speed.

Finance

Cash Back Calculator

Calculate credit card cash back rewards across multiple spending categories. Enter categories as 'name, monthly spend $, cash back %' per line. Shows monthly and annual cash back per category, total rewards, effective cash-back rate, and a comparison against a flat-rate card.

Finance

Credit Card Payoff Calculator

Compare avalanche (highest APR first) vs snowball (lowest balance first) strategies for paying off multiple credit cards. Enter cards as 'name, balance, APR%, minPayment%' per line plus an extra monthly payment. Shows payoff time, total interest, savings vs minimum-only, and balance decline curves.

Finance

Compound Annual Growth Rate (CAGR) Calculator

Calculate the compound annual growth rate (CAGR) from a beginning value, ending value and number of years; compare with the simple average growth rate and visualize the smooth growth curve. CAGR = (EV/BV)^(1/n) - 1.

Math & Numbers

Buoyancy Calculator (Archimedes, F = ρ·V·g)

Compute buoyant force, fluid density, or displaced volume from any two, with optional float/sink analysis

Math & Numbers

Capacitor Series / Parallel / Reactance Calculator

Combine capacitors in series/parallel, compute reactance Xc and RC time constant, with schematics and a reactance curve

Math & Numbers

Arcminutes to Degrees

Convert arcminutes to degrees with configurable decimal precision

Math & Numbers

Arcseconds to Degrees

Convert arcseconds to degrees with configurable decimal precision