PourMath: Resin Calculator

PourMath is a free resin calculator built for resin and epoxy makers — river tables, coasters, jewellery, deep pours and everything in between. This resin calculator works out exactly how much resin a mould needs and how to mix it, so you stop running short mid-pour or wasting mixed resin.

WHAT IT CALCULATES
• Mould volume — rectangles, cylinders, spheres and river tables (slab minus the wood) in centimetres, inches, millimetres or metres, with the result in ml, litres, fluid ounces and gallons.
• Mix ratios by volume or by weight — enter your ratio and total, and get Part A and Part B in ml and grams using your resin densities, with an optional extra percentage so you never come up short.
• Pigment load — pigment percentage of the mix, shown in ml and approximate drops.
• Fix a pour — poured too much of one part? Enter what went in and PourMath tells you how much of the other part restores the ratio, either way round.
• Leftover matcher — save your moulds, type in the resin you have left, and see which mould it fills and what would remain.

YOUR RESIN LOGBOOK
• Save moulds with their volumes and load one straight back into the calculator.
• Run cure timers for each pour, named per project.
• Cost a project properly: resin used at your price per litre, pigment, consumables and labour, with a margin to give a suggested selling price — then save the project to your list.
• Keep colour recipes (pigments and amounts per 100 ml) and a supplies-on-hand stock list.
• Everything is saved on your device and works offline.

A SHOP FOR RESIN SUPPLIES
The Shop tab gathers resin, moulds and pigment supplies from online sellers, so restocking starts where your math already lives. Prices and checkout stay with the seller.

LISTEN WHILE YOU WORK
Looking Glass Radio, our own live internet station, is built in — and off by default. Tap the ♪ button only if you want music while you pour; tap again and it disconnects completely. Credit: background music made with lookingglassai.us.

THE DEAL
We don't collect your data — your numbers and projects never leave your device. The app is free; the shop links keep it that way. American owned · Veteran operated.

Recent changes:
First release.