S-Curve Generator
Generate project S-curves for cash flow and progress planning. Supports early start, late start, and bell curve distributions with interactive charts and data export.
AED 50,000,000
Standard S-curve with peak in middle
| Month | Monthly | Cumulative | % |
|---|---|---|---|
| Month 1 | AED 961,988 | AED 961,988 | 1.9% |
| Month 2 | 2.1M | 3.1M | 6.1% |
| Month 3 | 3.9M | 6.9M | 13.8% |
| Month 4 | 6.0M | 12.9M | 25.8% |
| Month 5 | 7.7M | 20.6M | 41.2% |
| Month 6 | 8.4M | 29.0M | 58.1% |
| Month 7 | 7.7M | 36.8M | 73.5% |
| Month 8 | 6.0M | 42.7M | 85.4% |
| Month 9 | 3.9M | 46.6M | 93.1% |
| Month 10 | 2.1M | 48.7M | 97.3% |
| Month 11 | AED 961,988 | 49.6M | 99.3% |
| Month 12 | AED 370,236 | 50.0M | 100.0% |
Early Start (Front-loaded)
Higher mobilization costs, faster ramp-up
Late Start (Back-loaded)
Delayed mobilization, back-loaded finishing works
Linear
Constant rate of expenditure throughout project
Bell Curve (Standard S)
Typical construction profile with peak at midpoint
Duration
12
Total Value
50.0M
Peak Month
Month 6
Cumulative planned value over project duration
Planned monthly expenditure
Average Monthly
4.2M
Peak Monthly Value
8.4M
50% Progress At
Month 6
Final Value
50.0M
Notes:
- S-curve represents planned value baseline
- Compare actual progress against this curve for variance analysis
- Early/Late start affects cash flow timing
- Bell curve is typical for standard construction projects
- Use for earned value management (EVM) baseline
REFERENCE INFORMATION
This tool provides standard reference data compiled from industry sources.
Note:
• Data is provided for quick reference and may not reflect the most current standards or specifications.
About This Calculator
The S-Curve Generator helps project managers and planners create progress and cash flow curves for construction projects across the UAE and Gulf. Generate baseline S-curves using early start, late start, or bell curve distributions. Essential for project planning, progress tracking, earned value management, and contractor payment forecasting. Export data for Primavera P6 or Excel integration.
When to Use This Calculator
- Creating baseline progress curves for project planning
- Forecasting monthly cash flow requirements
- Setting up earned value management baselines
- Comparing actual progress against planned curves
- Preparing progress reports for client meetings
How to Use This Calculator
Enter Project Value
Input total contract value and project duration in months.
Select Distribution
Choose early start, late start, or bell curve distribution pattern.
Set Time Intervals
Define reporting periods (weekly or monthly) for the curve.
Generate Curve
View the S-curve with cumulative and periodic values.
Export Data
Download as Excel or CSV for Primavera P6 integration.
Typical Scenarios in UAE & Gulf Projects
A 36-month tower project valued at AED 500M needs baseline S-curve. Using bell curve distribution (typical for construction), the generator creates monthly progress targets: 5% in first 6 months (foundations), 60% in months 7-24 (structure/MEP), 35% in final 12 months (finishing). This becomes the basis for monthly progress claims.
A 24-month road project uses early start distribution to front-load earthworks. The S-curve shows 40% progress in first 8 months (bulk earthworks), helping the contractor optimize equipment deployment and plan early material procurement.
Frequently Asked Questions
Take Your Calculations Further
This calculator reflects the logic built into Arkan's construction management platform.
Last Updated: January 2026
Standards Reference: S-curve methodology aligned with PMI PMBOK and AACE standards