Calculators · 13 tools

Working construction PM calculators

All 13 tools run in your browser. No signup, no email wall, no data leaves your device.

Deep tools

Multi-line tools with full workings.

Earned Value

PV, EV, AC → CPI, SPI, EAC, ETC, TCPI, VAC.

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Cost Variance

Multi-line budget vs actual vs forecast.

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Critical Path (CPM)

ES, EF, LS, LF, float and critical path.

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Risk Register & Heatmap

5×5 register with heat map.

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Earned Value

Inline tool

CPI Calculator

Cost Performance Index — EV / AC.

EV (Earned Value)AC (Actual Cost)

CPI

0.90

Over budget

Inline tool

SPI Calculator

Schedule Performance Index — EV / PV.

EV (Earned Value)PV (Planned Value)

SPI

0.90

Behind schedule

Inline tool

EAC Calculator

Estimate at Completion — BAC / CPI.

BAC — Budget at CompletionEV — Earned ValueAC — Actual Cost

EAC

1,155,556

CPI = 0.87 · VAC = -155,556

Inline tool

TCPI Calculator

To-Complete Performance Index — (BAC − EV) / (BAC − AC).

BACEVAC

TCPI

1.15

Unlikely — re-baseline candidate

Risk

Inline tool

Risk Exposure Calculator

Probability × Impact × cost-at-risk.

Probability (0–1)Cost impact if it occurs

Risk exposure

80,000

Add to contingency reserve

Inline tool

Contingency Calculator

Risk-weighted contingency reserve from your register.

Base estimateTotal risk exposureGeneral buffer %

Contingency reserve

255,000

10.2% of base

Project Health

Inline tool

Project Health Quick Score

Weighted seven-category project health score — safety, schedule, cost, quality, risk, client and contractor.

Safety20% · 88

Schedule20% · 62

Cost20% · 71

Quality15% · 79

Risk10% · 54

Client Satisfaction10% · 83

Contractor Performance5% · 68

PHI Score

73.2 WATCH

Safety20% → 17.60
Schedule20% → 12.40
Cost20% → 14.20
Quality15% → 11.85
Risk10% → 5.40
Client Satisfaction10% → 8.30
Contractor Performance5% → 3.40

This is the quick version. The full Project Health Index adds generated recommendations, weakest-area ranking by points lost, and a PDF report. Open the full assessment.

Productivity

Inline tool

Productivity Calculator

Output / labour hours with target gap.

Output (units)Labour hoursTarget rate (units/hr)

Actual rate

5.25 u/hr

Gap vs target: -12.5%

Inline tool

Resource Utilization Calculator

Productive hours / available hours × 100.

Productive hoursAvailable hours

Resource utilisation

85.0%

Healthy band: 75–90%

Procurement

Inline tool

Procurement Savings Calculator

Baseline price vs negotiated price savings %.

Baseline priceNegotiated price

Savings

16,000

13.3% vs baseline

Cost

Inline tool

Variation Impact Calculator

Cumulative variation impact on cost, time and margin.

Original contractCumulative variationsOriginal margin %

Total contract

3,745,000

Scope creep: 7.0% · Indicative margin pressure: 4.9k