Calculate the basic rating life of a rolling bearing: L10 = (C/P)^p, with p = 3 for ball bearings and p = 10/3 for roller bearings. When a speed is provided, converts to L10h in operating hours.

Math & Numbers

Belt Pulley Speed Ratio Calculator

Calculate the ratio, driven speed and belt linear speed of a belt drive. i = d₂/d₁ = n₁/n₂, belt speed v = π·d·n/60. Supports mm/cm/m/inch diameter units.

Finance

Auto Loan Calculator

Calculate your car loan monthly payment factoring in vehicle price, down payment, trade-in value, sales tax, and registration fees. Shows amount financed, total interest, total cost, a descending balance curve, and a yearly amortization schedule.

Math & Numbers

Base-N Radix Converter

Convert numbers and text between any radix from 2 to 36, with custom alphabets and presets for Base58, Base62, and Crockford Base32.

Math & Numbers

Bar to KPa

Convert bar to kilopascals with configurable decimal precision

Math & Numbers

Bar to PSI

Convert bar to pounds per square inch with configurable decimal precision

Math & Numbers

Bayes Theorem Calculator

Calculate posterior probability P(A given B) using prior, likelihood, and false-positive rate

Math & Numbers

Average Calculator

Compare arithmetic, geometric, and harmonic averages for a numeric dataset in one place

Math & Numbers

Basic Calculator

Perform basic arithmetic calculations with support for multiple operations

Math & Numbers

Big Number Calculator

Perform arithmetic operations on very large numbers