Measure it. Check the plan. Take the ticket.
Free calculators for concrete, posts and yard materials. Enter sizes in feet and inches or metric, see a drawing of what you are pouring, and print a ticket with the amounts for the store, the supplier or your contractor.
Concrete
Posts & forms
Gravel, sand & soil
Quick answers
| Job | Answer |
|---|---|
| A 10 × 10 ft patio, 4 in thick | 1.36 yd³ · 62 bags of 80 lb (with 10% extra) |
| One post for a 6 ft fence (4×4) | hole 42 in deep × 10.5 in wide · 2.4 bags of 80 lb |
| 10 tons of gravel | 7.14 cubic yards |
| A 30 × 30 ft slab, installed | $3,600–$7,200 plain (US average) |
Who it's for
Homeowners planning a patio, shed base or fence; DIYers who want to buy the right number of bags in one trip; and small contractors who want a quick, clear quantity sheet to hand to a client or supplier. Start with the Quick answer; switch to Detailed when you want the drawing and a ticket to print.
How pourplot works
- Quick answer first. Type your sizes and the amount appears straight away, in cubic yards and bags.
- Check the plan. Switch to Detailed to see a dimensioned drawing of every part, so a wrong number stands out before you buy.
- Take the ticket. Print it or save it as a PDF. The QR code reopens the same calculation on any phone.
Numbers you can check
Every figure we use (bag yields, material weights, post depths, cost ranges) comes from a manufacturer or a published guide, and each page lists its sources. The methodology page shows every formula. We don't store your measurements: they live only in your link.