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50 resources. All links work without JavaScript.

• Calculator

  PERT estimate calculator

  Turn an optimistic, most likely and pessimistic estimate into a mean and approximate P50/P80/P90.

• Calculator

  Fixed-price project calculator

  Check loss probability and the margin a three-point cost estimate supports.

• Calculator

  Project break-even calculator

  Combine fixed costs, daily burn and uncertain duration to check the break-even price.

• Calculator

  Cost overrun probability calculator

  Estimate the chance your project cost exceeds a budget using a normal approximation.

• Calculator

  Deadline confidence calculator

  Check the chance of finishing within an elapsed-day deadline from one duration range.

• Calculator

  Project bid price calculator

  Find a quote from a three-point cost range, target margin and planning confidence.

• Calculator

  Margin & markup calculator

  Calculate gross margin, markup, profit and the price needed for a target margin. See why a 25% markup is only a 20% margin. Free, no signup.

• Calculator

  Freelance hourly rate calculator

  Find an hourly rate from annual compensation, overhead, billable utilization and target margin. Includes a worked example and downloadable decision brief.

• Calculator

  Discount impact calculator

  See how a client discount changes project profit and gross margin. Calculate the maximum discount that preserves your target margin at the entered cost.

• Calculator

  Scope creep & change fee calculator

  Price additional project hours and direct costs, and see the margin lost if you absorb the change. Free scope-creep calculator with a worked example.

• Calculator

  Risk mitigation value calculator

  Compare expected risk cost before and after mitigation. Find net expected benefit and the break-even mitigation spend without confusing averages with reserves.

• Calculator

  Project capacity calculator

  Compare required project effort with team capacity. Calculate an hours shortfall, minimum team size and resource-only duration from availability assumptions.

• Calculator

  Project cash flow calculator

  Model a deposit, three delivery phases and milestone payments. See the lowest cash balance and additional funding needed even on a profitable project.

• Calculator

  Project contingency calculator

  Calculate a contingency reserve above a named cost baseline at P50 to P99 using a clearly labeled PERT normal approximation. Free worked example.

• Guide

  Agency project estimating: roles, reviews and cash

  Estimate agency work with role-based costs, revision limits, specialist capacity and milestone cash flow. Includes a worked project and bid checklist.

• Guide

  Bid review checklist: a defensible price and delivery decision

  Review scope, cost assumptions, confidence, capacity, risks, cash flow and quote authority before bidding. Includes an interactive downloadable checklist.

• Guide

  Consulting engagement estimating: discovery to handoff

  Estimate consulting work with bounded discovery, interview effort, analysis, client reviews and a clear handoff. Includes pricing and risk examples.

• Guide

  Freelance project pricing: from capacity to quote

  Build a freelance fixed-price quote from billable capacity, delivery cost, a scope boundary and a target margin. Includes a worked example and review checklist.

• Guide

  Project proposal checklist: scope, price and assumptions

  Prepare a fixed-price proposal with deliverables, acceptance, exclusions, client dependencies, pricing assumptions and payment milestones. Download a local checklist.

• Guide

  Software project estimating: effort, dependencies and risk

  Build a software delivery estimate from tasks, three-point ranges, dependency chains, availability and discrete risks. Includes a concrete schedule example.

• Article

  The 40 unbilled hours that turn a 25% project margin into 10%

  Cost an incremental change, compare absorbing it with charging a fee, and keep the original project economics separate from the change margin.

• Article

  Is a risk mitigation worth its cost? Compare the residual risk too

  A 1,500 mitigation produces 1,300 net expected benefit in this worked example. See why that does not guarantee a saving or define a P80 reserve.

• Article

  400 hours of work is not a delivery date

  Separate effort, available capacity and dependency-driven duration with a three-person capacity check and a small parallel-task schedule.

• Article

  Your freelance rate depends on billable hours, not working hours

  A worked annual budget shows why 1,840 available hours can mean only 1,104 billable hours, and how utilization changes the required rate.

• Article

  A 10% project discount can remove 40% of your profit

  Follow a 20,000 quote through a requested discount, calculate the margin floor, and compare a price concession with an actual scope reduction.

• Article

  A profitable project can still need cash before the next milestone

  A 24,000 project earns 6,000 gross profit yet reaches a 2,400 funding gap. Follow the deposit, delivery costs and collections in order.

• Article

  Cost rate versus billing rate: do not put the selling price into the cost model

  An 80-hour example separates loaded delivery cost, client billing rate and target margin, and shows how an unnoticed second margin changes the quote.

• Article

  A profitable bid can still be the wrong use of scarce capacity

  Compare two illustrative projects with the same gross profit but different specialist-hour requirements, then check the constraints behind the ranking.

• Article

  How many Monte Carlo iterations does a bid need?

  A worked test: repeat one project simulation 200 times at four run counts and see how much P50, P80 and P95 move, and when more runs stop mattering.

• Article

  Can you add task P80s? Why the sum overshoots

  Eight task P80s add up to $58,551, but the project’s P80 is $51,765: that sum sits at P98.7. Why percentiles don’t add, and what correlation changes.

• Article

  Pricing a change request on a fixed-price project

  Two identical $7,200 changes: one barely moves the date, the other cuts on-time odds from 84% to 25%. A flowchart and the numbers for pricing a change.

• Article

  How to price a late-delivery penalty into a quote

  A $600-a-day delay clause added $3,063 to the quote that keeps 80% margin confidence. How to price the clause, and which negotiating lever moves it most.

• Article

  Cone of uncertainty: how wide should a quote be?

  A project’s final cost can land from a quarter to four times your first estimate. How the range narrows by stage, and what to quote at each one.

• Article

  Pricing fixed-price work when AI makes you faster

  A 35% speed-up on AI-assisted tasks is about a 25% cut in project cost. Cutting your price 35% drops the odds of a 25% margin from 80% to 28%.

• Article

  Task dependencies: why adding durations gives the wrong deadline

  A four-task example separates elapsed time, labor cost and shared resources before you estimate deadline confidence.

• Article

  Project contingency: build a reserve without counting risk twice

  Separate base uncertainty, discrete events and the pricing reserve with a worked $75,000 P80 project example.

• Article

  On time and on budget: why two 80% chances are not one

  A 1,000-scenario worked example shows how to count joint deadline and budget success, and why multiplying two headline probabilities can mislead.

• Article

  Margin vs markup: price a fixed-price project correctly

  A worked $60,000 cost example shows why a 25% markup gives a 20% margin, and how to apply your margin to a simulated cost percentile.

• Article

  Client budget below your quote? Change the scope with numbers

  A worked $80,000 budget example separates a discount from a scope change, with three options you can explain in a fixed-price negotiation.

• Article

  Calibrate project estimates with completed jobs

  Use a small forecast log to compare promised percentiles with actual outcomes, diagnose misses, and improve the next estimate without rewriting history.

• Article

  PERT vs Monte Carlo: three-point estimates lie

  PERT squeezes a whole range of outcomes into one average. Here is why that fails on a real 10-task project, and what to do instead.

• Article

  P50 vs P80: choose the confidence behind your quote

  P50 and P80 describe modeled cost coverage. A worked example separates margin confidence, loss probability and customer acceptance.

• Article

  The fixed-price death spiral: one job eats three

  An overrun costs more than the overrun: senior hours you cannot bill, deadlines you miss elsewhere, and the desperate next bid.

• Article

  Deadline confidence: the number clients want

  Clients do not want an earlier date. They want one they can plan around. Padding every task by 20% quietly costs you both — a worked example.

• Article

  Your break-even is not a price — it is a clock

  In fixed-price work, break-even moves every day the project runs. Same fee, nine extra days, and a healthy margin is a loss. Here is the math.

• Guide

  P50 versus P80

  Choose a confidence level and understand what cost percentiles mean.

• Template

  Downloadable project estimate templates

  Inspect example tasks, costs and risks for websites, integrations and advisory work.

• Reference

  Project estimating glossary

  Definitions, formulas and next steps for margin, contingency, percentiles and scheduling.

• Reference

  Simulation methodology

  How the Beta-PERT sampler, dependency model and reverse pricing work.

• Reference

  BidVariance product documentation

  Build, simulate, interpret and back up your first project.

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