PourMath: Resin Calculator

Epoxy resin calculator for molds, coasters & river tables. Part A & B in 3D.

How much epoxy do I need for this mold? PourMath is a resin calculator that answers it while you type. Pick the shape, enter the size, choose your resin, and see the total to mix, Part A, Part B and the cost. No Calculate button, no account, and it works without internet.

AN EPOXY RESIN CALCULATOR FOR EVERY POUR
• Trays and rectangle molds
• Round molds and resin coasters
• Heart, hexagon and oval silicone molds
• Coating: a clear layer over wood, a tabletop or a painting, by thickness
• River tables: measure the river at the start, middle and end to see how much river table epoxy you need
• Odd shapes: fill the mold with water, weigh it, type the weight

ANY RESIN, ANY MIX RATIO
Add your own resin with its mix ratio from the label: 1:1, 2:1, 3:1 or a custom ratio like 100:45, by weight or by volume. As an epoxy calculator it works the same for deep pour and tabletop epoxy. You can also enter the density from the label for an exact weight.

SEE YOUR MOLD IN LIVE 3D
A real-looking 3D model of your silicone mold changes as you type, with your sizes on it. Pick a resin colour and a finish (clear, translucent or opaque) and a look such as Ocean. Swipe to turn it.

NO WASTE, NO SHORTFALL
A small extra for waste (0, 5, 10 or 15%) is added for you, so you do not run out halfway through a pour. If a pour is deeper than your resin allows in one go, PourMath tells you how many layers to pour and how much resin each layer needs.

PIGMENT, MICA AND COST
Add pigment, mica powder or dye as a percentage, and see what the whole project costs. Results show in a size you know, such as "less than half a mug".

CURE TIMER
Start a resin cure timer when you pour. You get a notification when it is ready to demold, and another when it is fully cured.

SAVE, SHARE AND LEARN
• Save your first 3 pours for free and open them again later with all their sizes and the resin you used
• Share a picture of your pour with its sizes and amounts
• A short guide for better resin art and resin molds: measuring and mixing, fewer bubbles, depth and layers, colour, curing and demolding

INCHES OR CENTIMETRES
Work in in, ft, cm or mm. Big pours read in pounds and gallons, or kilograms and litres.

POURMATH PRO (OPTIONAL, ONE-TIME PURCHASE)
The calculator, the live 3D view, your resins and the cure timer are free for everyone. PourMath Pro is a one-time purchase that adds:
• No ads
• Unlimited saved pours
• Pro shapes: sphere, pyramid, cube, dome and coaster set
• Pro looks: Geode, Galaxy, Flowers, Metallic and your own colours
• Full-screen 3D: press Pour and watch it fill, change the light, and see the finished piece out of the mold
Some Pro features can also be opened for a short time by watching a video.

PRIVATE BY DESIGN
No account and no sign-up. Everything you type stays on your phone.

Results are estimates. Always follow your resin's label for mix ratio, pour depth and cure time.