Hobbies Calculators
Handy tools for makers, photographers, gamers, aquarists, and outdoor fans. Estimate fabric and yarn, mix epoxy or paint, dial in depth of field, plan aquarium stocking, and crunch game odds. Clear inputs, trustworthy formulas, and instant results—so you can spend more time creating and playing.
Crafting & DIY
Candle Making Calculator
Compute wax, fragrance load, and dye for any vessel size.
Epoxy Resin Calculator
Measure resin & hardener by area, thickness, and mix ratio.
Knitting Gauge Calculator
Convert swatch stitches/rows into accurate project sizing.
Soap Making (Lye) Calculator
Balance oils with lye and water for a target superfat.
Paint Mixing Calculator
Mix custom colors and volumes with exact proportions.
Fabric Calculator for Quilting
Plan blocks, backing, batting, and binding yardage.
Sewing Yardage Calculator
Estimate fabric yardage by width, size, and pattern pieces.
Yarn Calculator
Approximate yarn needed by project size, gauge, and stitch.
Photography
Aquarium & Pets
Games & Leisure
Board Game Score Calculator
Tally points, bonuses, and tie-breakers cleanly.
Darts Checkout Calculator
Find optimal finishing routes from any score.
Gacha / Loot Box Probability
Model pull odds, pity systems, and expected cost.
Poker Odds Calculator
Evaluate hand strength, outs, pot odds, and equity.