Step 1: How to use this calculator?

List the nÃºmero of tasks of the project (segÃºn the desglose EDT or plan of project)

Step 2: How to use this calculator?

Assign the duraciÃ³n mean estimated per task considerando the complejidad and recursos disponibles

Planning all the tasks in serie: the construcciÃ³n allows many solap is (installations while secan soleras, etc.)

Not adding margin of contingencies: retrasos per lluvia, missing of materials or averÃas of machinery are usual

Last updated: 2026-08-24

Project Planning Calculator — Calculate simple project timeline with Gantt.

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List the nÃºmero of tasks of the project (segÃºn the desglose EDT or plan of project)
Assign the duraciÃ³n mean estimated per task considerando the complejidad and recursos disponibles
Estimate the percentage of paralelismo: tasks that can ejecutarse simultÃ¡neamente (30% is tÃpico in construcciÃ³n)
Calculate the dÃas laborabl is total considerando the solape of tasks paralelas
Convert a weeks laborabl is (Ã·5 dÃas/week) and aÃ±ade a 15% to contingenci is (climatologÃa, retrasos of supplies)
Compare with the term contractual to Verify the viabilidad of the cronograma

⚠️ Planning all the tasks in serie: the construcciÃ³n allows many solap is (installations while secan soleras, etc.)
⚠️ Not adding margin of contingencies: retrasos per lluvia, missing of materials or averÃas of machinery are usual
⚠️ Forget the tiempos of curado of the hormigÃ³n (7-28 dÃas segÃºn elemento estructural) in the secuencia of tasks
⚠️ Not considering the periodos of vacaciones, festivos local is and dÃas of climatologÃa adversa segÃºn the zone
⚠️ Confusing dÃas laborabl is with dÃas naturales: the term of ejecuciÃ³n suele referirse a dÃas laborables

Calculate project duration for 5 tasks with dependencies.

Results: {dias_total} dÃas laborables, {weeks} weeks, {semanas_con_imprevistos} weeks with 15 % of contingencies.