# Concrete Curing Time Plan Calculator

> Turn a pour date and your specified periods into calendar dates for the end of curing, formwork striking, prop removal and cube or cylinder tests.

Category: Construction · Applies to: Worldwide · Last updated: 2026-10-29
Interactive calculator: https://calculators.geekmidst.com/calculators/concrete-curing-time-plan-calculator

Enter the pour date and the periods your specification or engineer sets. The calculator turns them into calendar dates so the site team can plan around them.

Also called: Concrete curing schedule calculator, Formwork striking date calculator.

## Inputs
- Pour date (default )
- Curing period (unit days; default 7)
- Strike side formwork after (unit days; default 2)
- Remove soffit props after (unit days; default 14)
- Strength test age (unit days; default 28)

## Results
- Curing ends
- Strike side formwork
- Remove soffit props
- Strength test
- Pour date

## Formula

```
Event date = Pour date + n calendar days
```

Where:
- n: days after pouring for each event, from your specification

## Worked example
1. Pour on Monday 2 November 2026.
2. Strike sides at +2 days = 4 Nov; curing ends at +7 = 9 Nov; props out at +14 = 16 Nov.
3. The 28-day test falls on 30 November.

**Result:** For a pour on 2 November 2026, curing ends on 9 November and the 28-day test is on 30 November.

## What the result means

Dates are calendar days. In cold weather concrete gains strength more slowly, so the same strength takes longer; follow your engineer’s instructions or test results over the calendar.

## Assumptions and limits
- Periods are counted in calendar days from the day of the pour.
- Does not predict strength gain; striking and prop removal must follow the engineer’s criteria or test results.

## Questions

### Why is 28 days used for testing?

Specified strengths are commonly defined at 28 days, so test specimens are crushed at that age to check compliance.

### Can I strike formwork sooner in hot weather?

Sometimes, but only on the engineer’s say-so, ideally backed by early-age strength tests.

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_Quantities are estimates. Confirm requirements with your engineer or supplier before ordering materials._

Source: GM¹X CalcVerse — https://calculators.geekmidst.com/calculators/concrete-curing-time-plan-calculator