Riemann Sum Calculator

Approximate ∫f(x)dx

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Function

Method

Approximation (left)

2.28000000

10 subdivisions · Δx = 0.200000

Rectangles

x=0.000f=0.0000A=0.000000

x=0.200f=0.0400A=0.008000

x=0.400f=0.1600A=0.032000

x=0.600f=0.3600A=0.072000

x=0.800f=0.6400A=0.128000

x=1.000f=1.0000A=0.200000

x=1.200f=1.4400A=0.288000

x=1.400f=1.9600A=0.392000

x=1.600f=2.5600A=0.512000

x=1.800f=3.2400A=0.648000

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About Riemann Sum Calculator

A Riemann sum calculator that approximates definite integrals using left, right, midpoint, and trapezoidal rules. Select from preset functions, set interval and number of subdivisions. Shows each rectangle's contribution and total area. All calculations are client-side. Essential for calculus and numerical integration.

Riemann Sum Calculator Features

Left/Right/Mid
Trapezoidal
n rectangles
Step-by-step
Error estimate

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