Honest answers about money and deadlines, before you sign
Fourteen free calculators for the decisions behind a quote — no account or install, with calculations in your browser. Commercial tools use direct arithmetic; uncertainty tools label their PERT and normal approximations. The full app models task dependencies and discrete risks with Monte Carlo simulation.
What would you like to know?
Every calculator starts with an editable example. Keep a baseline, change your assumptions, and compare the results in the same tab. You do not need to know PERT to begin.
14 calculators. All links work without JavaScript.
PERT estimate calculator
Turn an optimistic, most likely and pessimistic estimate into a mean and approximate P50/P80/P90.
PricingFixed-price project calculator
Check loss probability and the margin a three-point cost estimate supports.
Cash flowProject break-even calculator
Combine fixed costs, daily burn and uncertain duration to check the break-even price.
RiskCost overrun probability calculator
Estimate the chance your project cost exceeds a budget using a normal approximation.
ScheduleDeadline confidence calculator
Check the chance of finishing within an elapsed-day deadline from one duration range.
PricingProject bid price calculator
Find a quote from a three-point cost range, target margin and planning confidence.
PricingMargin & 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.
PricingFreelance hourly rate calculator
Find an hourly rate from annual compensation, overhead, billable utilization and target margin. Includes a worked example and downloadable decision brief.
PricingDiscount 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.
ScopeScope 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.
RiskRisk 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.
ScheduleProject capacity calculator
Compare required project effort with team capacity. Calculate an hours shortfall, minimum team size and resource-only duration from availability assumptions.
Cash flowProject 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.
RiskProject 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.
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Need the reasoning behind a number? Read P50 versus P80, use a practical estimating guide, or look up a term in the glossary.
Ready to estimate a whole project?
Use a downloadable project estimate template to turn tasks, costs and risks into an editable starting point. Each calculator also lets you download a plain-text decision brief with your current assumptions and key results.
A single three-point estimate is one piece of the picture. When the whole project depends on many tasks, dependencies and risk events, run thousands of Monte Carlo simulations instead of a single shortcut — and read how it works on the methodology page.