Project Risk Analyzer

Monte Carlo contingency calculator that turns worries into a number you can defend.

Build a risk register, see the probability–impact picture, and run a Monte Carlo contingency in seconds. The analysis is free. The audit-ready report is yours for a one-time price.

What is a Monte Carlo contingency reserve? A Monte Carlo contingency reserve is a project budget buffer calculated by simulating thousands of possible risk outcomes rather than adding a flat percentage to the base estimate. Each risk in the register is assigned a probability and an impact range; the simulation samples from those ranges across thousands of trials and reports the contingency needed to cover a chosen confidence level, commonly the 80th percentile. This tool builds one in the browser: enter your risks with probability and impact, run the simulation, and export an audit-ready report with the probability-impact matrix and the recommended reserve.

The workbench

Your project, quantified.

Edit the register below. Everything recalculates live. Nothing leaves your browser.

Risk register

Cost in your currency. O / L / P = optimistic, likely, pessimistic.
RiskOwnerProb OLP PERTEMVResponse
Expected risk cost (total EMV): $0

Contingency

Expected risk cost
$0
Recommended reserve
$0
Likely range of total cost Your reserve level

How the number is built: each risk may or may not occur, weighted by its probability. When it does, its cost is drawn from a Beta-PERT curve across your O / L / P estimates. We run the project many times and read the reserve at your chosen confidence. The expected cost is the average; the reserve is the buffer that keeps you within budget at that confidence.

Probability–impact matrix

Each risk placed by likelihood and expected cost.
Impact (expected cost) →

Decision record

Goes into your report.
Founding member pricing $29 for life · $39 First 100 buyers only. Unlimited PDFs; keep your license forever.
Buy for $29

Free, watermarked preview available before you buy.

Pricing

Free to analyze. Pay for the artifact.

The thinking should be free. What you pay for is the defensible, shareable record of the decision.

Analyze

Free
  • Full risk register and live EMV
  • Probability–impact matrix
  • Monte Carlo contingency on screen
  • Watermarked report preview
Open the tool

Report

$29 founding
  • Clean, audit-ready PDF report
  • Reusable model you can rerun
  • Embedded decision record
  • Sized to hand a sponsor or auditor
See founding member pricing →
The method

Why a reserve beats a guess.

A single contingency percentage hides the shape of your risk. Quantifying it gives you a number with a confidence level attached, and a record of how you got there. As routine analysis gets automated, that record is the part that still needs a human to sign it.